WO2000028354A3 - Light source locator using switchable holograms - Google Patents

Light source locator using switchable holograms Download PDF

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Publication number
WO2000028354A3
WO2000028354A3 PCT/US1999/024246 US9924246W WO0028354A3 WO 2000028354 A3 WO2000028354 A3 WO 2000028354A3 US 9924246 W US9924246 W US 9924246W WO 0028354 A3 WO0028354 A3 WO 0028354A3
Authority
WO
WIPO (PCT)
Prior art keywords
detector
processing circuit
light
shoes
shoe
Prior art date
Application number
PCT/US1999/024246
Other languages
French (fr)
Other versions
WO2000028354A2 (en
WO2000028354A9 (en
Inventor
Milan M Popovich
Original Assignee
Digilens Inc
Milan M Popovich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digilens Inc, Milan M Popovich filed Critical Digilens Inc
Priority to AU28425/00A priority Critical patent/AU2842500A/en
Publication of WO2000028354A2 publication Critical patent/WO2000028354A2/en
Publication of WO2000028354A3 publication Critical patent/WO2000028354A3/en
Publication of WO2000028354A9 publication Critical patent/WO2000028354A9/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements

Abstract

An apparatus and method is described for locating light sources using holographic techniques. The apparatus includes a plurality of switchable holographic elements (SHOEs) (302), a detector (304), and a processing circuit (306) coupled to the holographic elements and detectors. The processing circuit activates one of the SHOEs thereby causing the SHOE to diffract any light incident on the SHOE within its field of view onto the detector. The detector is two-dimensional array that outputs a signal corresponding to the location at which light is incident on the detector. Utilizing the location at which the light is incident on the detector and the predetermined ray deviation characteristics of the SHOE, the processing circuit can calculate a bearing to the light source. The processing circuit may activate each of the plurality of SHOEs in a predetermined sequence to check for light sources in a large angular field of view.
PCT/US1999/024246 1998-10-16 1999-10-15 Light source locator using switchable holograms WO2000028354A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28425/00A AU2842500A (en) 1998-10-16 1999-10-15 Light source locator using switchable holograms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10447498P 1998-10-16 1998-10-16
US60/104,474 1998-10-16

Publications (3)

Publication Number Publication Date
WO2000028354A2 WO2000028354A2 (en) 2000-05-18
WO2000028354A3 true WO2000028354A3 (en) 2000-10-05
WO2000028354A9 WO2000028354A9 (en) 2001-01-04

Family

ID=22300689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/024246 WO2000028354A2 (en) 1998-10-16 1999-10-15 Light source locator using switchable holograms

Country Status (2)

Country Link
AU (1) AU2842500A (en)
WO (1) WO2000028354A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2622336B2 (en) * 2017-03-30 2017-10-31 Universidad De Alicante HOLOGRAPHIC SENSOR FOR DETECTION OF ADULTERANTS IN ESSENTIAL OILS AND METHOD OF OBTAINING SUCH SENSOR
CN115857178B (en) * 2023-03-01 2023-06-16 南昌虚拟现实研究院股份有限公司 Holographic optical waveguide lens and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5289264A (en) * 1991-09-26 1994-02-22 Hans Steinbichler Method and apparatus for ascertaining the absolute coordinates of an object
US5684612A (en) * 1993-06-11 1997-11-04 Board Of Trustees Of The Leland Stanford Junior University Method and system for maintaining and controlling the signal-to-noise ratio of hologams recorded in ferroelectric photorefractive materials
WO1998004650A1 (en) * 1996-07-12 1998-02-05 Science Applications International Corporation Switchable volume hologram materials and devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5289264A (en) * 1991-09-26 1994-02-22 Hans Steinbichler Method and apparatus for ascertaining the absolute coordinates of an object
US5684612A (en) * 1993-06-11 1997-11-04 Board Of Trustees Of The Leland Stanford Junior University Method and system for maintaining and controlling the signal-to-noise ratio of hologams recorded in ferroelectric photorefractive materials
WO1998004650A1 (en) * 1996-07-12 1998-02-05 Science Applications International Corporation Switchable volume hologram materials and devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SUTHERLAND R L ET AL: "ELECTRICALLY SWITCHABLE VOLUME GRATINGS IN POLYMER-DISPERSED LIQUID CRYSTALS", APPLIED PHYSICS LETTERS,US,AMERICAN INSTITUTE OF PHYSICS. NEW YORK, vol. 64, no. 9, 28 February 1994 (1994-02-28), pages 1074 - 1076, XP000425907, ISSN: 0003-6951 *

Also Published As

Publication number Publication date
WO2000028354A2 (en) 2000-05-18
AU2842500A (en) 2000-05-29
WO2000028354A9 (en) 2001-01-04

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