WO2001079895A3 - Illumination assembly - Google Patents

Illumination assembly Download PDF

Info

Publication number
WO2001079895A3
WO2001079895A3 PCT/US2001/011960 US0111960W WO0179895A3 WO 2001079895 A3 WO2001079895 A3 WO 2001079895A3 US 0111960 W US0111960 W US 0111960W WO 0179895 A3 WO0179895 A3 WO 0179895A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
input end
microprisms
output end
illumination assembly
Prior art date
Application number
PCT/US2001/011960
Other languages
French (fr)
Other versions
WO2001079895A2 (en
Inventor
Karl W Beeson
Michael Foley
Macrea Maxfield
Jose C Diaz
Scott M Zimmerman
Original Assignee
Honeywell Int 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 Honeywell Int Inc filed Critical Honeywell Int Inc
Priority to AU2001255334A priority Critical patent/AU2001255334A1/en
Priority to DE60101270T priority patent/DE60101270T2/en
Priority to JP2001576504A priority patent/JP2003531458A/en
Priority to AT01928484T priority patent/ATE254771T1/en
Priority to EP01928484A priority patent/EP1272875B1/en
Publication of WO2001079895A2 publication Critical patent/WO2001079895A2/en
Publication of WO2001079895A3 publication Critical patent/WO2001079895A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0012—Arrays characterised by the manufacturing method
    • G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0289—Diffusing elements; Afocal elements characterized by the use used as a transflector
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/122—Basic optical elements, e.g. light-guiding paths
    • G02B6/1221—Basic optical elements, e.g. light-guiding paths made from organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/241—Light guide terminations
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B2006/12166—Manufacturing methods
    • G02B2006/12195—Tapering
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

An optical illumination assembly comprising an array of optical microprisms and microlenses for redirecting light from a light source. Such displays are used in a wide variety of applications such as backlit flat panel displays requiring a directed light source which provides an efficient output of light. The illumination assembly has a light transmitter optically coupled to an input end of array of microprisms through an optional diffuser, and a microlens on the light output end of each microprism. The microprisms have a light input end optically coupled to the light transmitting means and a light output end spaced from the light input end. Two pairs of oppositely positioned sidewalls having one an edge defined by said light input end and another edge defined by said light output end are positioned for reflecting of transmitted light toward the light output end. When light from the light transmitting means enters each microprism through the light input end, the light is directed by said sidewalls through the microprisms to each light output end and then through the microlenses. Optionally a light diffuser is positioned between the light transmitter and the input end of the microprisms.
PCT/US2001/011960 2000-04-14 2001-04-12 Illumination assembly WO2001079895A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2001255334A AU2001255334A1 (en) 2000-04-14 2001-04-12 Illumination assembly
DE60101270T DE60101270T2 (en) 2000-04-14 2001-04-12 LIGHTING UNIT
JP2001576504A JP2003531458A (en) 2000-04-14 2001-04-12 Lighting assembly
AT01928484T ATE254771T1 (en) 2000-04-14 2001-04-12 LIGHTING UNIT
EP01928484A EP1272875B1 (en) 2000-04-14 2001-04-12 Illumination assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/549,665 US6424786B1 (en) 1996-12-02 2000-04-14 Illumination assembly
US09/549,665 2000-04-14

Publications (2)

Publication Number Publication Date
WO2001079895A2 WO2001079895A2 (en) 2001-10-25
WO2001079895A3 true WO2001079895A3 (en) 2002-10-03

Family

ID=24193937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/011960 WO2001079895A2 (en) 2000-04-14 2001-04-12 Illumination assembly

Country Status (8)

Country Link
US (1) US6424786B1 (en)
EP (1) EP1272875B1 (en)
JP (1) JP2003531458A (en)
KR (1) KR100756620B1 (en)
AT (1) ATE254771T1 (en)
AU (1) AU2001255334A1 (en)
DE (1) DE60101270T2 (en)
WO (1) WO2001079895A2 (en)

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Also Published As

Publication number Publication date
ATE254771T1 (en) 2003-12-15
JP2003531458A (en) 2003-10-21
EP1272875B1 (en) 2003-11-19
WO2001079895A2 (en) 2001-10-25
AU2001255334A1 (en) 2001-10-30
KR100756620B1 (en) 2007-09-07
DE60101270T2 (en) 2004-11-04
EP1272875A2 (en) 2003-01-08
KR20020092433A (en) 2002-12-11
US6424786B1 (en) 2002-07-23
DE60101270D1 (en) 2003-12-24

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