CN103454778A - Naked-eye 3D projection system - Google Patents
Naked-eye 3D projection system Download PDFInfo
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- CN103454778A CN103454778A CN2013104193121A CN201310419312A CN103454778A CN 103454778 A CN103454778 A CN 103454778A CN 2013104193121 A CN2013104193121 A CN 2013104193121A CN 201310419312 A CN201310419312 A CN 201310419312A CN 103454778 A CN103454778 A CN 103454778A
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Abstract
The invention relates to a naked-eye 3D projection system which comprises a 3D projector and a projection screen. The 3D projector comprises a plurality of projection lenses, film sources played by the 3D projector are photographed by 3D photographing equipment or processed by 3D software, the projection screen is an apparent-anisotropy directional scattering projection screen, the structure is simple, cost is low, and the requirement for playing hardware is low. Each film source comprises a plurality of sub film sources, the sub film sources between lines are arranged in a progressive mode, the sub film sources are arranged in m lines and n columns, the progressive distance between the sub film source in adjacent two lines is 1/m of the transverse length of a single sub film source, the projection lenses and the sub film sources correspond in a one-to-one mode, the projection lenses project the sub film sources on the projection screen in an overlapped mode or a mode that the upper edges and the lower edges are overlapped, and the sub film sources are sequentially and progressively arranged in the left-right transverse direction according to a ratio, a displayed 3D image has the advantages of being large in viewing angle, high in resolution ratio, small in crosstalk degree, strong in stereoscopic effect and the like, the 3D image can be view by many people at the same time, and large-angle naked-eye 3D dynamic/static image display is truly achieved.
Description
Technical field
The present invention relates to a kind of 3D optical projection system, be applicable to wide-angle under the bore hole state, multi-faceted, many people observe, and specifically, relate to a kind of bore hole 3D optical projection system simultaneously.
Background technology
In daily life, people utilize eyes to recognize three-dimensional object, when certain object of identification, owing to thering is certain distance between eyes, it is different that this segment distance makes two of the left and right picture that enters respectively right and left eyes when observing object, comprise angle, perspective all has difference, be reflected in brain and will produce " stereoscopic vision ", two picture compositions together, just produce stereoscopic sensation, thereby context that can judgment object, the difference of this observed object formed picture on people's right and left eyes retina is exactly binocular parallax, the generation of parallax plays very important effect to the formation of stereoscopic vision.
At present, the 3D display technique mainly comprises hyperphoria with fixed eyeballs mirror and the bore hole formula of hyperphoria with fixed eyeballs mirror not, it is very ripe that the 3D display technique of hyperphoria with fixed eyeballs mirror develops, but can not make us break away from the constraint of Special spectacles, this makes its range of application and comfort all make a discount, and many 3D display techniques can allow long experiencer have to feel sick the sensation such as dizzy, the 3D display technique of bore hole formula is owing to wearing glasses, receive more and more people's concern, become the developing direction of following 3D display technique, thereby the 3D display technique of bore hole formula becomes the focus of current research.
With human eye, observe the principle of three-dimensional object identical, when wearing the 3D eyes and watching the 3D image, the picture signal of sending from screen to when close eyes just by the 3D eyeglass image information that left and right is different input respectively right and left eyes, so wear the problem that there is no observation angle when the 3D glasses are watched the 3D image, but when identical film source is observed for main flow bore hole 3D, the problem of observation angle is just particularly evident, that is to say that the bore hole formula 3D display device of current main flow can only single angle or just can watch effect 3D image preferably in less angular range, also just mean that spectators want to see that the 3D image must lock position more clearly, keep picture relative with the position of head fixing, be slightly offset and just there will be crosstalk phenomenon or do not observe 3D effect, cause the degree of freedom of bore hole 3D video image evaluation greatly to reduce, have a strong impact on the viewing effect of 3D image.
In order to solve the problem of viewing angle, a kind of real-time calculating adjusting gear of human eye orientation recognition system in conjunction with software that utilize that had the scientific research personnel to provide, the calculating that adopts described device to catch viewing person's eyes and carry out picture is carried out regulating and showing in real time, but adopt described device only can capture a viewing person's eyes, can't realize many people viewing simultaneously, and operation computer-chronograph operational data is huge, from starting to capture to have caught again, to regulating, show, will inevitably cause certain delay.
The appearance of lens pillar technology has realized the lifting among a small circle of 3D image observation angle, described lens pillar technology is to instigate being positioned on the focal plane of lens as plane of liquid crystal display, and the post lens pitch is the positive integer times of screen pixels width, the pixel of the image below each post lens is divided into several sub-pixels like this, lens just can be with each sub-pixel of different direction projections like this, so eyes are watched display screen from different angles, just see different sub-pixels, and then lifting among a small circle the observation angle scope of 3D image, can realize many people viewing simultaneously, as shown in Figure 1, bore hole 3D screen comprises LCD screen 1, the place ahead of LCD screen 1 is provided with column mirror grating 2, during observation, when left and right spectroscopy scheme picture that screen sends enters respectively left eye 3 and right eye 4 just, 3D effect the best.At present realized presenting of 9 anaglyphs by this technology on the market, be to comprise 9 sub-pixels in the pitch of each post mirror, if establishing the observation angle of single anaglyph is 2 °, final observation angle is 18 °, while departing from a little this angular range, just there will be the right and left eyes picture put upside down or crosstalk.And realize this technology, at first require the LCD screen of ultrahigh resolution, then require the accurate combination of height of column mirror grating and screen pixels, sub-pixel is more, the observation angle of stereoscopic picture plane is larger, and picture pixel is lower, and this is also an essence that limits this technical development, the making of this technology film source and data volume are also huge as can be seen here, can't realize wide-angle bore hole 3D effect truly.
The principle of slit grating formula bore hole 3D technology is with column mirror grating formula bore hole 3D technology, as shown in Figure 2, bore hole 3D screen comprises LCD screen 1, the place ahead of LCD screen 1 is provided with slit grating 5, during observation, when left and right spectroscopy scheme picture that screen sends enters respectively left eye 3 and right eye 4 just, 3D effect the best, but, while departing from a little this angular range, just there will be the right and left eyes picture put upside down or crosstalk.
The frame crosstalk phenomenon of bore hole 3D display device that lens pillar technology or slit grating technology are added in employing on liquid crystal board is comparatively serious; be that spectators often can observe 3D picture appearance " ghost image " or " jumping picture " phenomenon when watching the 3D image, have a strong impact on viewing person's the comfort level of watching.
In order to overcome the above problems, Chinese patent CN102445762B provides a kind of bore hole 3D projection screen and bore hole 3D optical projection system, it discloses a kind of bore hole 3D front projection screen, a kind of bore hole 3D rear projection screen and a kind of bore hole 3D optical projection system, and described front projection screen comprises: surperficial biconvex microtrabeculae lens board and a diffuse reflector; The both sides of described surperficial biconvex microtrabeculae lens board all are comprised of the horizontal close-packed arrays of multiple row dimpling post lens, the dimpling post lens numbers of described surperficial biconvex microtrabeculae lens board both sides equates and is corresponding one by one, each dimpling post lens all are vertical strip and pitch equates, described pitch is the positive integer times that projector is transmitted to the image pixel width on projection screen; Described diffuse reflector is positioned on the back focal plane of described surperficial biconvex microtrabeculae lens board.Described rear projection screen is identical with described front projection screen principle.Described optical projection system adopts many array of rear-projectors, and when described array of rear-projectors is m * n,, n row projector capable by m forms, and m is necessary for the integer that is more than or equal to 1, and n is necessary for the even number that is more than or equal to 2.Described optical projection system adopts the mode of array of rear-projectors that projection source is provided, reach the viewing effect of wide-angle, need with many projector, drive many projector to play picture or the stereopsis of a solid simultaneously, the hardware needed and the software requirement matched are all very high, production cost is high, and limited the columns of projected array, the post lens pitch is the positive integer times of projected picture pixel, required equally to launch the delicate relationship of picture pixel and cylindrical lens array, and the projector spacing is the double vision distance, just limited the fluency of stereoscopic picture plane, there will be larger jumping picture and crosstalk phenomenon if enlarge observation angle by this technology, finally being difficult to realization wide-angle bore hole truly watches.
Summary of the invention
The technical problem to be solved in the present invention is for above deficiency, provides a kind of and need to not help equipment and realize that wide-angle, multi-faceted, many people watch simultaneously, crosstalk minimum, film source makes simple and the low bore hole 3D optical projection system of hardware requirement by anaglyph spectacles or other 3D viewings paving.
For solving above technical matters, the present invention by the following technical solutions: bore hole 3D optical projection system is characterized in that: described optical projection system comprises a 3D projector and is arranged on the projection screen in projecting light path of 3D projector;
Described 3D projector comprises that the projecting light path between LCDs and projection screen is provided with the projection lens group for playing the LCDs of film source.
A kind of prioritization scheme, described film source comprises some sub-film sources;
Described projection lens group comprises for several projection lens by the overlapping projection on projection screen of sub-film source.
Another kind of prioritization scheme, the quantity of described projection lens is consistent with the quantity of sub-film source;
Described projection lens is corresponding one by one with sub-film source.
Another prioritization scheme, described sub-film source is arranged in the capable n row of m, and m is more than or equal to 1 positive integer, and n is greater than 1 positive integer;
Sub-film source between described row and row is the form of going forward one by one and arranges;
The distance of going forward one by one between the sub-film source of described adjacent two row is the 1/m that single sub-film source is grown crosswise.
Further prioritization scheme meets following relational expression between described sub-film source, film source and LCDs:
a×n?+?a×(m-1)/m?=?x
b×n?=?y
x=s
y=d
In formula: the width of the single sub-film source of a-, the height of the single sub-film source of b-, the width of x-film source, the height of y-film source, the s-LCDs effectively shows the width of part, the d-LCDs effectively shows the height of part.
Prioritization scheme further, the horizontal range that described adjacent two row are between adjacent two projection lens central points of the relation of going forward one by one is less than the distance between the human eye double vision.
Prioritization scheme further, described projection screen comprises column mirror grating;
Described column mirror grating adopts semi-convex Lenticular screen, and the focal plane side of semi-convex Lenticular screen is provided with fluoresent coating;
Described fluoresent coating directly is combined with column mirror grating.
A kind of prioritization scheme, described projection screen comprises video screen, fluoroscopic display surface is provided with the micro-window shutter that can shake at a high speed.
Another kind of prioritization scheme, described projection screen comprises video screen, but fluoroscopic periphery is provided with the crawler type slit grating band of high-speed rotation.
Another prioritization scheme, described 3D projector also comprises light fixture;
Described light fixture is arranged on the rear of LCDs;
The light path of described light fixture is provided with dodging device.
Further prioritization scheme, described LCDs is whole screen or the mosaic screen more than two.
After the present invention adopts above technical scheme, compared with prior art, have the following advantages: comprise 3D projector and be arranged on the projection screen in projecting light path of 3D projector, 3D projector is provided with one, 3D projector comprises LCDs, projecting light path between LCDs and projection screen is provided with the projection lens group, the projection lens group comprises several projection lens, the 3D film source that the film source that 3D projector plays can adopt the point-of-view shot technology to take, also common film source can be used after the image software layering is synthetic again, projection screen adopts pseudoanisotropy's directional scattering projection screen, imaging effect is good, simple in structure, cost is low, film source is made simple, to play hardware require low,
Described film source comprises some sub-film sources, sub-film source between row and row is the form of going forward one by one and arranges, the capable n of m that is arranged as of sub-film source is listed as, the distance of going forward one by one between the sub-film source of adjacent two row is the 1/m that single sub-film source is grown crosswise, projection lens is corresponding one by one with sub-film source, level interval between adjacent two projection lens central points is less than the distance between the human eye double vision, projection lens is by the overlapping projection or vertically overlapping on projection screen of corresponding sub-film source, the left and right arrangement of laterally going forward one by one successively in proportion, drop shadow effect is good, the Observable angle of the 3D image of institute's projection is large, can many people watch simultaneously, degree of crosstalking is minimum, the stereoscopic views effect is strong, really by the projection form, realize presenting of move/static image of wide-angle bore hole 3D.
Below in conjunction with drawings and Examples, the present invention is described in detail.
The accompanying drawing explanation
Accompanying drawing 1 is the structural representation of prior art center pillar mirror raster pattern bore hole 3D screen;
Accompanying drawing 2 is structural representations of slit grating formula bore hole 3D screen in prior art;
Accompanying drawing 3 is structural representations of bore hole 3D optical projection system in the embodiment of the present invention;
Accompanying drawing 4 is projection theory schematic diagram of bore hole 3D optical projection system in the embodiment of the present invention;
Accompanying drawing 5 is arrangement mode schematic diagram of embodiment of the present invention neutron film source;
Accompanying drawing 6 is overlapping perspective view of vertical direction in the embodiment of the present invention;
Accompanying drawing 7 is structural representations of projection screen in the embodiment of the present invention 1;
Accompanying drawing 9 is structural representations of projection screen in the embodiment of the present invention 2;
Accompanying drawing 10 is structural representations of projection screen in the embodiment of the present invention 3;
In figure,
The 1-LCD screen, the 2-column mirror grating, the 3-left eye, the 4-right eye, the 5-slit grating, 6-3D projector, the 7-projection screen, the 8-housing, the 9-LCDs, 10-projection lens group, the 11-light fixture, 12-plays hardware, 13-projection signal light, 14-3D image visual angle, 15-film source, 16-drives runner, the 17-connecting rod, the 18-shifting shaft, 19-shifting shaft slide rail, the micro-blade of louver window of 20-, 21-blade of louver window axis, the 22-driving wheel, 23-crawler type slit grating band, the 24-fluoresent coating, the 25-video screen, 26-stirs blade, the 27-reference light path, the projection of 28-film source benchmark, the 29-reference path, the 30-projection lens, the overlapping projecting light path of 31-, the underlapped part of 32-film source projection.
Embodiment
Embodiment 1, and as shown in Figure 3, bore hole 3D optical projection system, comprise 3D projector 6 for playing film source, be arranged on the projection screen 7 in 6 projecting light paths of 3D projector.
Described 3D projector 6 comprises housing 8, one end of described housing 8 has opening, the openend of described housing 8 is towards projection screen 7, be provided with LCDs 9 in housing 8, described LCDs 9 can be whole screen and also can be the mosaic screen more than two, playing same film source gets final product, be arranged with projection lens group 10 in the projecting light path of LCDs 9 in parallel, projection lens group 10 comprises that several are by regularly arranged projection lens 30, for realizing film source overlapping projection on projection screen 7, projection lens group 10 is arranged on the openend of housing 8, be provided with light fixture 11 in the housing 8 at LCDs 9 rears, the light that described light fixture 11 sends is that normal optical gets final product, described light fixture 11 can adopt white light LEDs or Metal halogen lamp, described light fixture 11 can also add the dodging devices such as Fresnel lens, described light fixture 11 is for improving the backlight illumination of LCDs 9, and then raising drop shadow effect, described LCDs 9 is electrically connected with plays hardware 12, described broadcasting hardware 12 can be microcomputer, it can be also player, as long as described broadcasting hardware 12 can realize driving LCDs 9 to play film source.
As shown in Figure 4, the picture that LCDs 9 is play is projected to projection screen 7 through projection lens group 10, in figure, projection signal light 13 has provided a sample of the projection path that is projected to projection screen 7 two ends, the 3D rendering be projected on projection screen 7 reflects to form 3D rendering visible angle 14 through projection screen 7 again, described 3D rendering visible angle 14 refers to that being positioned at this angular regions observation picture can produce stereoscopic sensation, it is the parallax sequence image that the distance between observer's eyes can disperse out across projection screen 7, distance in animation between adjacent or close two width figure, the observer is when in visual range, left-right and front-back moves like this, the picture that enters eyes is different anaglyph always, formed stereopsis.
Described film source is arranged and is formed according to certain forms by sequence of pictures or the animation sequence of multi-angled shooting, the film source of a complete form consists of some sub-film sources 15, on LCDs 9, play, projection lens group 10 is by the complete overlapping projection or vertically overlapping on projection screen 7 of sub-film source 15, the arrangement of laterally going forward one by one successively in proportion, the scope of described 3D rendering visible angle 14 is relevant with the specification of LCDs 9, the quantity of sub-film source 15 is also relevant with the specification of LCDs 9, the width of LCDs 9 is wider, the width of film source is wider, the quantity of sub-film source 15 is more, 3D rendering visible angle 14 is larger, be that bore hole 3D Observable angle is larger, the resolution of the higher final 3D image formed of the resolution of LCD screen is higher, the specification of the quality and quantity fluid,matching crystal display screen 9 of sub-film source 15 has determined the quality of viewing effect, it is the degree that the size of viewing angle and eyes are comfortable.
The sequence of described sub-film source 15 is used a plurality of taking the photograph/camera installation (comprising the virtual video camera in modeling software) form the mean value (approximately 5 ° of left and right) of stereopsis or equal this angle or be slightly larger than this angle all can according to being slightly less than human eye, subject or scenery are taken simultaneously or successively and to be formed, complete after the collecting work of sub-film source 15 bundle film source 15 carries out corresponding the arrangement according to the specification of LCDs 9 and generates picture or the video file that the bore hole 3D optical projection system of watching for wide-angle is play in postproduction of movies software again, the collection of described sub-film source 15 and making software are known technology, at this, no longer elaborate.
As shown in Figure 5, the quantity of sub-film source 15 is m * n, the capable n of m that is arranged as that is sub-film source 15 is listed as, m is more than or equal to 1 positive integer, n is greater than 1 positive integer, sub-film source 15 between row and row is the form of going forward one by one and arranges, and the distance of going forward one by one between the sub-film source 15 of adjacent two row is the 1/m that single sub-film source 15 is grown crosswise, the quantity of sub-film source 15 is consistent with the quantity of projection lens 30 in projection lens group 10, sub-film source 15 is corresponding one by one with projection lens 30, projection lens 30 is by the complete overlapping projection or vertically overlapping on projection screen 7 of corresponding sub-film source 15, the left and right arrangement of laterally going forward one by one successively in proportion.
As shown in Figure 6, with sub-film source 15 overlapping example that is projected as of vertical direction (being projection screen 7 short transverses) on projection screen 7, describe, at first the central point O ' of each projection lens 30 is adjusted on the same level line with the central point O of corresponding sub-film source 15, be that the line of central point O ' and the central point O of corresponding sub-film source 15 of projection lens 30 is perpendicular to the plane at sub-film source 15 places, the sub-film source 15 that selection is positioned at the film source central spot substantially is benchmark, illustrate, if the arrangement mode of sub-film source 15 is 3 row 5 row, select to be positioned at the tertial sub-film source 15 of the second row as benchmark, if the arrangement mode of sub-film source 15 is 4 row 5 row, selecting to be positioned at the second row the 3rd row or the tertial sub-film source 15 of the third line all can as benchmark, in like manner, if the arrangement mode of sub-film source 15 is 4 row 8 row, select to be positioned at the second row the 4th row, the second row the 5th row, the sub-film source 15 of the third line the 4th row or the third line the 5th row all can as benchmark, the projecting light path that sees through corresponding projection lens 30 as the sub-film source 15 of benchmark is reference light path 27, seeing through as the sub-film source 15 of benchmark the image that corresponding projection lens 30 is projected to projection screen 7 is sub-film source benchmark projection 28, the height of setting single sub-film source 15 is b, the height of sub-film source benchmark projection 28 is b ', the height of single sub-film source 15 is known when making, and the height of sub-film source benchmark projection 28 can directly obtain through measuring, the projective amplification multiple Q=b ' of sub-film source 15/b, the sub-film source 15 of other outside benchmark obtains the projection of sub-sheet source reference through corresponding projection lens 30 along reference path 29, the underlapped part of the projection of sub-sheet source reference and sub-film source benchmark projection 28 is the underlapped part 32 of sub-film source projection, the height of setting the underlapped part 32 of sub-film source projection is z, in order to obtain in the vertical direction overlapping projection fully, it is z/Q that corresponding projection lens 30 needs the distance of adjusting, according to above-mentioned method of adjustment, can adjust one by one the position of each projection lens 30, the projection lens 30 of sub-film source 15 after corresponding adjustment can obtain the projection fully overlapping with sub-film source benchmark projection 28 vertical direction along overlapping projecting light path 31.
In like manner, relative position according to the sub-film source 15 of above-mentioned adjustment principle also capable of regulating with homolographic projection camera lens 30 horizontal directions, to obtain horizontal direction (being projection screen 7 Widths) overlapping projection fully, or obtain as required the projection of laterally going forward one by one successively in proportion and arranging, again repeat no more.
For convenience of description, the sequence number that in diagram neutron film source 15, the numeral of mark is sub-film source 15, in order to form effective bore hole 3D picture, adjacent two sub-film source 15(are 1 work song film source and 2 work song film sources as shown in Figure 5) two corresponding projection lens 30 central points have two subpoints on projection screen 7 central point place surface levels, the angle that described subpoint and projection screen 7 central points form is less than the average angle that observer's eyes form stereopsis, that is: the level interval between the central point of the projection lens 30 of adjacent two sub-film source 15 correspondences is not more than the distance between the human eye double vision, level interval between described adjacent two sub-film source 15 central points is less, the 3D effect broadcasted is more smooth, that is: crosstalk with to jump the picture degree less, the 3D effect simultaneously broadcasted is relevant with the shooting angle of film source or making angle, the less 3D effect broadcasted of the shooting angle of film source or making angle intervals is more smooth, the quantity of sub-film source 15 is determined by the specification of LCDs 9, the more tolerant sub-film source of receiving more than 15 of LCDs 9, observation angle is larger.
The sub-sheet source sequence formed with 3D MAX virtual video camera, to subject, every 2 ° of prints of being taken, be that example describes from left to right, if the pixel of LCDs 9 is 2560 * 1080, resolution and size according to LCDs 9, the film source planning property that to play on LCDs 9 is divided into 3 * 5 sub-film source arrangement mode, the quantity that is sub-film source 15 is 15, being 3 row 5 row arranges, between the sub-film source 15 of adjacent two row go forward one by one the distance for single sub-film source 15, grow crosswise 1/3, becoming the projection of two projection lens 30 central points on projection screen 7 central point place surface levels of adjacent two sub-film source 15 correspondences of progressive relationship is 2 ° with the angle of projection screen 7 central points formations, and have 15 sub-film sources 15, so effective observation angle of the final bore hole 3D picture formed is 30 °, single projected picture pixel is about 450 * 360, the stereoscopic picture plane pixel of people's eyes observation is about 900 * 720.
In order to improve and expand the size of bore hole 3D picture, pixel and observation angle, resolution and the size of the interior LCDs 9 of 3D projector 6 of can upgrading, the wider Observable of the size of LCDs 9 angle is larger, the higher effect observed of the pixel of LCDs 9 is more clear, the quantity of respective flap source neutron film source needs to synchronize to increase and improve with pixel, 4 * 9 the sub-film source arrangement mode of take is the example explanation, between the sub-film source 15 of adjacent two row go forward one by one the distance for single sub-film source 15, grow crosswise 1/4, if the angle be formed centrally in the spacing of two sub-film sources 15 that are the form of going forward one by one and projection screen 7 is 2 °, coordinate suitable LCDs this bore hole 3D optical projection system be combined effective observation angle of formed bore hole 3D picture with film source be 72 °.
The specification of the specification of film source and LCDs 9 is closely connected, for the specification of setting forth LCDs 9 in bore hole 3D optical projection system, the specification of film source, the specification of sub-film source, sub-film source are the relation between the line number columns of the relation of going forward one by one, in order to lower equation statement:
a×n?+?a×(m-1)/m?=?x；
b×n?=?y；
x=s；
y=d；
In formula: the width of the single sub-film source of a-(15), the height of the single sub-film source of b-(15), m-film source line number, n-film source columns, the width of x-film source, the height of y-film source, s-LCDs (9) effectively shows the width of part, d-LCDs (9) effectively shows the height of part.
For fully the reduction stereo landscape of clapping, object or dummy model original appearance, need the sub-film source 15 of making is carried out after mirror image processing according to the arrangement of going forward one by one of order from left to right again, and when playing, LCDs 9 plays for standing upside down, also film source can be put upside down, project on screen and be the reality sequence clearly of standing upside down through projection lens 30 like this, and be visually the upright sequence of reality clearly.
As shown in Figure 7 and Figure 8, in the present embodiment, projection screen 7 adopts micro-window shutter directional scattering projection screen of shake at a high speed, described projection screen 7 comprises video screen 25, the display surface of video screen 25 is provided with micro-window shutter, described micro-window shutter comprises several micro-blade of louver window 20, described micro-blade of louver window 20 is the black foil of flexible as thin as a wafer, each micro-blade of louver window 20 can swing along blade of louver window axis 21, distance between adjacent two micro-blade of louver window 20 is proportional with the angle of the video screen 25 can observe through this distance, generally need this observation angle is controlled between 1 °～2 °, be that the single frames observation angle is 1 °～2 °, micro-blade of louver window 20 is connected with shifting shaft 18, shifting shaft 18 is provided with several and stirs blade 26, stirring blade 26 is staggered with micro-blade of louver window 20, shifting shaft 18 is arranged on the top of video screen 25, shifting shaft 18 is connected with the shifting shaft drive unit, described shifting shaft drive unit comprises driving runner 16, drive runner 16 to be rotatably connected to connecting rod 17, connecting rod 17 is connected with an end of shifting shaft 18, shifting shaft 18 also is connected with shifting shaft slide rail 19, shifting shaft slide rail 19 be arranged in parallel with shifting shaft 18, for realizing shifting shaft 18 laterally moving left and right along video screen 25, and then the high speed that realizes micro-blade of louver window 20 is shaken, in micro-blade of louver window 20 high speed dither process, top between adjacent two micro-blade of louver window 20 slits and bottom are all intersecting stirs blade 26, when single projected picture is invested described projection screen 7, observer's eyes can only be positioned at and enter to shield that light angle overlaps or misalignment angle just can observe the effect of projected picture while being not more than described single frames observation angle, when the single frames observation angle is less than the angle of observer's eyes and screen center's formation, only can realize that eyes see the single frames picture, the another eyes be can't see, so just reached the effect of directional scattering, can realize the function of projection screen 7 in bore hole 3D optical projection system.
Embodiment 2, and bore hole 3D optical projection system comprises 3D projector 6 and is arranged on the projection screen 7 in 6 projecting light paths of 3D projector, and the structure of described 3D projector 6 and principle, with embodiment 1, repeat no more in the present embodiment.
As shown in Figure 9, in the present embodiment, projection screen 7 adopts the slit grating formula directional scattering projection screen of high-speed translation, described projection screen 7 comprises video screen 25, the periphery of video screen 25 is provided with crawler type slit grating band 23, the inboard of crawler type slit grating band 23 is connected with driving wheel 22, crawler type slit grating band 23 comprises slit part and shading light part, the slit part of crawler type slit grating band 23 is relevant with the quantity of sub-film source 15 with the ratio of shading light part, slit area partly is less more at most for the quantity of sub-film source 15, the area of shading light part is larger, the width of shading light part becomes positive integer times relation with the width of slit, sub-film source quantity is 12 o'clock, the width of shading light part is 12 times of slit width, sub-film source quantity is 24 o'clock, the width of shading light part is 24 times of slit width.Sub-film source quantity crawler type slit grating band 23 more at most is larger to the distance between video screen 25, screen 7 is thicker, the brightness of the 3D picture demonstrated is lower, the brightness that need to increase light fixture 11 in 3D projector 6 improves the backlight illumination of LCDs, and then the assurance observation effect, the material reflectance of crawler type slit grating band 23 shading light parts is more low more is conducive to presenting of 3D picture effect.
Crawler type slit grating band 23 high-speed rotation under the effect of driving wheel 22, the distance of crawler type slit grating band 23 slit parts is proportional with the angle of the video screen 25 can observe through this distance, generally need this observation angle is controlled between 1 °～2 °, be that the single frames observation angle is 1 °～2 °, when single projected picture is invested described projection screen 7, observer's eyes can only be positioned at and enter to shield that light angle overlaps or misalignment angle just can observe the effect of projected picture while being not more than described single frames observation angle, when the single frames observation angle is less than the angle of observer's eyes and screen center's formation, only can realize that eyes see the single frames picture, the another eyes be can't see, reached the requirement of directional scattering projection screen, can realize the function of projection screen 7 in bore hole 3D optical projection system.
Embodiment 3, and bore hole 3D optical projection system comprises 3D projector 6 and is arranged on the projection screen 7 in 6 projecting light paths of 3D projector, and the structure of described 3D projector 6 and principle, with embodiment 1, repeat no more in the present embodiment.
As shown in figure 10, in the present embodiment, projection screen 7 adopts semi-convex Lenticular screen formula directional scattering projection screen, described projection screen 7 comprises column mirror grating 2, described column mirror grating 2 adopts semi-convex Lenticular screen, the focal plane side of column mirror grating 2 is provided with fluoresent coating 24, and described fluoresent coating 24 directly is combined with the focal plane of column mirror grating 2.
At present, column mirror grating material 2 on the market mainly contains 10 lines, 32 lines, 43 lines, 75 lines, 100 lines, 160 line equal-specifications, and unit " line " is the quantity of half projection lens in per inch length, the lens pillar that described half projection lens are half convex surface.It is irrelevant that the width of half projection lens is that pitch and projected picture launch the Pixel Dimensions of picture from projector, namely adopt the column mirror grating material of any specification all can as the composition material of projection screen 7, be that pitch width is not limit, when projected picture projects on column mirror grating 2, the light of one fixed width is arrived focus by the micro-column lens focus, yet when human eye is the same with the incident ray level angle while going to watch column mirror grating 2, the size when amplification of micro-column lens reverts to incident by the optical information of focus again, when moving horizontally, observer's eyes can see again the focus of other angles, so just formed directional scattering, pseudoanisotropy's characteristic.Because material is light, without Mechanical Driven, the optically focused characteristic is arranged, brightness is high, and in practical application, this half Lenticular screen formula directional scattering projection screen can be used as the first-selection of projection screen 7 in bore hole 3D optical projection system.
The above is giving an example of best mode for carrying out the invention, and the part of wherein not addressing in detail is those of ordinary skills' common practise.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (11)
1. bore hole 3D optical projection system, it is characterized in that: described optical projection system comprises a 3D projector (6) and is arranged on the projection screen (7) in projecting light path of 3D projector (6);
Described 3D projector (6) comprises the LCDs (9) for playing film source, and the projecting light path between LCDs (9) and projection screen (7) is provided with projection lens group (10).
2. bore hole 3D optical projection system as claimed in claim 1 is characterized in that: described film source comprises some sub-film sources (15);
Described projection lens group (10) comprises for several projection lens (30) in the upper overlapping projection of projection screen (7) by sub-film source (15).
3. bore hole 3D optical projection system as claimed in claim 2, it is characterized in that: the quantity of described projection lens (30) is consistent with the quantity of sub-film source (15);
Described projection lens (30) is corresponding one by one with sub-film source (15).
4. bore hole 3D optical projection system as claimed in claim 3 is characterized in that: described sub-film source (15) is arranged in the capable n row of m, and m is more than or equal to 1 positive integer, and n is greater than 1 positive integer;
Sub-film source (15) between described row and row is the form of going forward one by one and arranges;
The distance of going forward one by one between the sub-film source (15) of described adjacent two row is the 1/m that single sub-film source (15) is grown crosswise.
5. bore hole 3D optical projection system as claimed in claim 4 is characterized in that: meet following relational expression between described sub-film source (15), film source and LCDs (9):
a×n?+?a×(m-1)/m?=?x
b×n?=?y
x=s
y=d
In formula: the width of the single sub-film source of a-(15), the height of the single sub-film source of b-(15), the width of x-film source, the height of y-film source, s-LCDs (9) effectively shows the width of part, d-LCDs (9) effectively shows the height of part.
6. bore hole 3D optical projection system as claimed in claim 5 is characterized in that: the horizontal range that described adjacent two row are between adjacent two projection lens (30) central point of the relation of going forward one by one is less than the distance between the human eye double vision.
7. as one of them described bore hole 3D optical projection system of claim 1-6, it is characterized in that: described projection screen (7) comprises column mirror grating (2);
Described column mirror grating (2) adopts semi-convex Lenticular screen, and the focal plane side of semi-convex Lenticular screen is provided with fluoresent coating (24);
Described fluoresent coating (24) directly and column mirror grating (2) combination.
8. as one of them described bore hole 3D optical projection system of claim 1-6, it is characterized in that: described projection screen (7) comprises video screen (25), and the display surface of video screen (25) is provided with the micro-window shutter that can shake at a high speed.
9. as one of them described bore hole 3D optical projection system of claim 1-6, it is characterized in that: described projection screen (7) comprises video screen (25), video screen (25) but periphery be provided with the crawler type slit grating band (23) of high-speed rotation.
10. bore hole 3D optical projection system as claimed in claim 1, it is characterized in that: described 3D projector (6) also comprises light fixture (11);
Described light fixture (11) is arranged on the rear of LCDs (9);
The light path of described light fixture (11) is provided with dodging device.
11. bore hole 3D optical projection system as claimed in claim 1 is characterized in that: described LCDs (9) is whole screen or the mosaic screen more than two.
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