WO2001038906A3 - Optical retro-reflection device - Google Patents

Optical retro-reflection device Download PDF

Info

Publication number
WO2001038906A3
WO2001038906A3 PCT/US2000/032368 US0032368W WO0138906A3 WO 2001038906 A3 WO2001038906 A3 WO 2001038906A3 US 0032368 W US0032368 W US 0032368W WO 0138906 A3 WO0138906 A3 WO 0138906A3
Authority
WO
WIPO (PCT)
Prior art keywords
retro
diffraction
reflectors
reflector
reflect
Prior art date
Application number
PCT/US2000/032368
Other languages
French (fr)
Other versions
WO2001038906A2 (en
Inventor
Milan M Popovich
Antoine Yvon Messiou
Original Assignee
Digilens Inc
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 filed Critical Digilens Inc
Priority to AU16628/01A priority Critical patent/AU1662801A/en
Publication of WO2001038906A2 publication Critical patent/WO2001038906A2/en
Publication of WO2001038906A3 publication Critical patent/WO2001038906A3/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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/203—Filters having holographic or diffractive elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals

Abstract

An optical retro-reflective apparatus for application to reconfigurable displays for highway signs and other applications is disclosed. In a first preferred embodiment, the apparatus includes a retro-reflector such as a corner cube prism, three orthogonally arranged planer reflectors, or a plurality of either arranged as an array, or an array of micro-spheres or micro-prisms arranged as a corner-cube. In one embodiment, a holographic diffraction element is placed between a source of radiation such as visible light and one or more of the retro-reflectors. The diffraction element is made up of one or more stacked holographic devices in which pre-determined holographs are stored, operative to diffract a particular wavelength band of radiation (e.g. red, blue and green visible light). The halogram devices can be stacked and selectively deactivated so that the desired wavelength band (or color) to be diffracted is selected. In this way, the retro-reflective apparatus can be made to reflect or re-transmit light of a certain color. In a second embodiment, the retro-reflectors are arranged orthogonally and include the diffraction elements. The diffraction elements for each retro-reflector are programmed to diffract (and therefore reflect) a different wavelength band of light. Thus, only the retro-reflector that is in an active state will reflect (by diffraction) a portion of the incident radiation, and that portion is preferably red, green or blue visible light.
PCT/US2000/032368 1999-11-23 2000-11-24 Optical retro-reflection device WO2001038906A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16628/01A AU1662801A (en) 1999-11-23 2000-11-24 Optical retro-reflection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16696399P 1999-11-23 1999-11-23
US60/166,963 1999-11-23

Publications (2)

Publication Number Publication Date
WO2001038906A2 WO2001038906A2 (en) 2001-05-31
WO2001038906A3 true WO2001038906A3 (en) 2001-10-18

Family

ID=22605380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/032368 WO2001038906A2 (en) 1999-11-23 2000-11-24 Optical retro-reflection device

Country Status (2)

Country Link
AU (1) AU1662801A (en)
WO (1) WO2001038906A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216579A1 (en) * 2002-04-14 2003-10-23 Sen Hans-Erich Gubela Wide-angle sensor system with triple reflector and production of the tools
US7308207B2 (en) 2003-11-17 2007-12-11 Raytheon Company Method for identifying an interrogated object using a dynamic optical tag identification system
US20080094689A1 (en) * 2004-11-12 2008-04-24 Koninklijke Philips Electronics, N.V. Bright Full Color Reflective Display
DE102007006405B4 (en) * 2007-02-05 2012-02-16 Imos Gubela Gmbh Reflector with a trapezoidal reflection and method for fine light scanning to detect an object
EP2352042B1 (en) 2010-01-29 2017-05-17 Dexerials Corporation Optical element and method for manufacturing the same
CN107121717B (en) * 2017-05-27 2019-07-23 中国科学院上海技术物理研究所 A kind of compound prism of corner cube
WO2021208942A1 (en) * 2020-04-17 2021-10-21 荆门市探梦科技有限公司 Reflective geometric holographic film based on two-dimensional feature, and preparation method therefor and use thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004650A1 (en) * 1996-07-12 1998-02-05 Science Applications International Corporation Switchable volume hologram materials and devices
EP0856765A1 (en) * 1997-01-31 1998-08-05 Xerox Corporation Reflective-type liquid crystal display and methods of forming the same
US5822119A (en) * 1993-10-04 1998-10-13 Kell Erik Franke Retroreflective sheeting material, a method of its production and its use
US5866236A (en) * 1996-02-16 1999-02-02 Minnesota Mining And Manufacturing Company Article with holographic and retroreflective features
US5963347A (en) * 1994-06-28 1999-10-05 Budil; Matthias Holographic neurochip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5822119A (en) * 1993-10-04 1998-10-13 Kell Erik Franke Retroreflective sheeting material, a method of its production and its use
US5963347A (en) * 1994-06-28 1999-10-05 Budil; Matthias Holographic neurochip
US5866236A (en) * 1996-02-16 1999-02-02 Minnesota Mining And Manufacturing Company Article with holographic and retroreflective features
WO1998004650A1 (en) * 1996-07-12 1998-02-05 Science Applications International Corporation Switchable volume hologram materials and devices
EP0856765A1 (en) * 1997-01-31 1998-08-05 Xerox Corporation Reflective-type liquid crystal display and methods of forming the same

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DOMASH L H ET AL: "APPLICATIONS OF SWITCHABLE POLAROID HOLOGRAMS", PROCEEDINGS OF THE SPIE,US,SPIE, BELLINGHAM, VA, vol. 2152, 26 January 1994 (1994-01-26), pages 127 - 138, XP002057590 *
TANAKA K ET AL: "FABRICATION OF HOLOGRAPHIC POLYMER DISPERSED LIQUID CRYSTAL (HPDLC)WITH HIGH REFLECTION EFFICIENCY", JAPANESE JOURNAL OF APPLIED PHYSICS,PUBLICATION OFFICE JAPANESE JOURNAL OF APPLIED PHYSICS. TOKYO,JP, vol. 38, no. 3A, 1 March 1999 (1999-03-01), pages L277 - L278, XP000905962, ISSN: 0021-4922 *
TANAKA K ET AL: "HOLOGRAPHICALLY FORMED LIQUID-CRYSTAL/POLYMER DEVICE FOR REFLECTIVECOLOR DISPLAY", JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY,US,SOCIETY FOR INFORMATION DISPLAY, SAN JOSE, vol. 2, no. 1, 1 April 1994 (1994-04-01), pages 37 - 40, XP000482981, ISSN: 1071-0922 *
WENYON M ET AL: "LP-L: LATE-NEWS POSTER: WHITEE HOLOGRAPHIC REFLECTORS FOR LCDS", SID INTERNATIONAL SYMPOSIUM DIGEST OF TECHNICAL PAPERS,US,SANTA ANA, SID, vol. 28, 13 May 1997 (1997-05-13), pages 691 - 694, XP000722792, ISSN: 0097-966X *

Also Published As

Publication number Publication date
AU1662801A (en) 2001-06-04
WO2001038906A2 (en) 2001-05-31

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