US2474297A - Combination televeision receiver and picture projector - Google Patents

Description

N. YOUNG, JR 2,474,297 COMBINATION TELEVISION RECEIVER AND PICTURE PROJECTOR Filed Jan s, 1946 June 28, 1949.

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Patented June 28, 1949 i A I i UNITED STATES PATENT OFFICE COMBINATION TELEVISION RCEIVER AND y PICTURE PROJECTOR Norman H. Young, Jr., Jackson Heights,'N. Y., :ssignor to Federal Telephone a Radio Corporation, New York, N. Y., a corporation of Delaware Application January 16, 1946, Serial No. 1,582 4 Clims. (Cl. 88-24) This invention relates to a combination telstood and others may become apparent from evision receiver and picture proiector and more a discussion of one particular 'embodiment theres'peciflcally, to an arrangement for utilizing the of, reference being had to the drawing in which:

optical system of a projection-type television rev Figure 1 is a partia] pictorial section ot the ceiver for projecting images from a motion pic- 5 mechanca and optical structure of one possible ture machine. combination of a, television receiver and a motion Television receivers .which are equipped with picture projectlon y apparatus for projecting images rrom the face Figure 2 is an alternative combination of a oi' a cathode ray tube to the viewing screen of television receiver and a motion picture projecthe receiver may be very readily adapted for o ti n arrangement, the optical syste being shown projecting slide or motion picture images, thus only in part.

In Figure 1, a television receiver cabinet I is e cal qualities of such projection receivers. One shown e c os n an Optical a an ement which uses a translucent plastc screen which has both cathode r y e 3 to a translucent screen 4.

the horizontal plane. It would be especially de- Of the Y images, hOWeVer, in accordpicture machi the mirrorto the position sketched and closing it A second object is to provide an arrangement causes the mirror to line up with the long'tudinai for introducing motion picture images into the aXS Of the cathode y t e optical system of a projection type television receiver.

bulbs might easily be used to produce images 40 Projectol' may may not be rigidly attahed to lancy characteristics. and applicable to home television receivers A still further object of this 'nvention is to The arrangement of Fi'gure 2 llustrates an The forego'ng objects and features of the from the projector 8 to the face 2 of the telepresent invention may be more clearly undervision tube 3 through the opening !3 in the spher- 5. already provided for other reato the translucent screen 4, not shown in this figure, is accomplished just as it the projected picture image were a received television image. The picture projector I is supported in an appropriate position by a bracket il, and changing of film and other adjustment might be Iacilitated by a in the cabinet and possibly a means the proiector to a convenient location when access thereto is required.

several changes may be instituted by those skilled in the art without departing in principle from this invention; ror example other means for mounting the motion picture projector or for rotating or moving the auxiliary or, the motion picture be projected into the optical system !rom positions other than those illustrated and described heretofore. Although only two embodiments of the invention have been shown and described, the scope of the invention should not be considered limited thereby.

I claim:

1. A combination television receiver and motion picture projector, comprising a rear projection television receiver having a cathode ray tube positioned vertically with its fluorescent screen bottommost, a spherical mirror refiecting upward the images from said fiuorescent screen, a plane translucent screen mounted vertically, a plane mirror reflecting the image from said spherical mirror to said screen, and a correcting lens positioned between said spherical mirror and said plane mirror; a motion picture projector; means for mounting said projector; and an auxiliary reflecting system located above said cathode ray tube between said correcting lens and said plane mirror and substantially in alignment with the longitudinal axis oi said cathode ray tube, said auxiliary refiecting system being directed -to refiect light from said projector to said plane mirror.

2. A combination television receiver 'and motion picture projector according to claim 1 wherein said auxiliary reflecting system comprises an auxilary mirror movable from a position most favorable for reflection of light from said picture projector to said plane mirror to a position in which minimum intererence occurs to projection of televised images, and means for moving said auxiliary mirror to desired positions.

3. A combination television receiver and motion picture projector, compris'ng a. rear projection television receiver and housing structure picture projector;

having a cathode ray tube positioned verticaliy with its fluorescent screen bottommost, a spherical mirror reflecting upward the images from said fluorescent screen. a plane translucent screen mounted verticaiiy, a plane mirror reflecting the images from said spherical mirror to said screen, and a correcting lens positioned between said spherical mirror and said plane mirror; a motion means tor mounting said projector; an a ary mirror located above said cathode ray tube between said correcting lens and said plane mirror and rotatabie !rom a position in which it reflects maximum light from said projector to said plane mirror to' a position in which it least interieres with the projection oi televised images; and means for rotating said auxiliary mirror to the desired positions.

4. A combination television receiver and motion picture proiecior according to claim 3 where- Ior mounting said proiector comprises a hinged section of said housing which may be opened to serve as a support !or said projector or which may be closed to aid in enclcsin said television receiver, and whereinsaid means for rotating said auxiliary mirror 'omprises a linkage, between said hinged section and said auxiliary 'mirr which rotates said auxiliary mirror into said position in which it reflects maximum light from said projector to said plane mirror when said hinged section is opened and which rotates said auxiiiary mirror into said position in which it least interferes with the projection of televised images when said hinged section is closed.

NORMAN H. YOUNG, JR.

REFEBENCES CITED The following references are of record in the file of this patent:

UNITE STATES PATENTS Number Name Date 1,899,032 Handschiegl Feb. 28, 1933 2,073,3'I0 Goidsmith et al Mar. 9, 1937 2351984 Cleaver et ai. Aug. 12, 1941 2373301 Landis Feb. 17, 1942 2,295,802 Nicoll Sept. 15, 1942 2307202 Eddy Jan. 5, 1943 2336508 Smith et ai Dec. 14, 1943 2,404,943 Beshgetoor July 30, 1946 FOREIGN PATENTS Number Country Date '1,344 Great Britain 1913

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