WO1999015932A1 - Procede et dispositif servant a eclairer un affichage - Google Patents

Procede et dispositif servant a eclairer un affichage Download PDF

Info

Publication number
WO1999015932A1
WO1999015932A1 PCT/US1998/019261 US9819261W WO9915932A1 WO 1999015932 A1 WO1999015932 A1 WO 1999015932A1 US 9819261 W US9819261 W US 9819261W WO 9915932 A1 WO9915932 A1 WO 9915932A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
optical system
pyramidal
predetermined
lens
Prior art date
Application number
PCT/US1998/019261
Other languages
English (en)
Inventor
Douglas Mcknight
Original Assignee
Colorado Microdisplay, 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 Colorado Microdisplay, Inc. filed Critical Colorado Microdisplay, Inc.
Priority to AU94872/98A priority Critical patent/AU9487298A/en
Publication of WO1999015932A1 publication Critical patent/WO1999015932A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3152—Modulator illumination systems for shaping the light beam
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/22—Telecentric objectives or lens systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • H04N9/3108—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators by using a single electronic spatial light modulator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

Système optique servant à éclairer un affichage au moyen d'un éclairage pratiquement télécentrique au niveau d'une surface d'affichage dudit affichage. Dans un mode de réalisation, une première lentille possédant une première longueur focale (f1) et une deuxième lentille possédant une deuxième longueur focale (f2) sont séparées d'une distance correspondant à approximativement f1+f2. La première lentille reçoit de la lumière depuis une source de lumière produisant de la lumière au niveau d'une pluralité de points d'une surface de ladite source de lumière; à chaque point, de la lumière est émise selon une forme pyramidale prédéterminée possédant un axe et définissant un angle. La deuxième lentille, couplée optiquement à la première lentille, transmet de la lumière à l'affichage, qui possède une surface de modulation de lumière. Une pluralité de points au niveau de la surface de modulation de lumière reçoit une pluralité de formes pyramidales prédéterminées, alignées de manière à être parallèles.
PCT/US1998/019261 1997-09-19 1998-09-15 Procede et dispositif servant a eclairer un affichage WO1999015932A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU94872/98A AU9487298A (en) 1997-09-19 1998-09-15 Method and apparatus for illuminating a display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93417297A 1997-09-19 1997-09-19
US08/934,172 1997-09-19

Publications (1)

Publication Number Publication Date
WO1999015932A1 true WO1999015932A1 (fr) 1999-04-01

Family

ID=25465087

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/019261 WO1999015932A1 (fr) 1997-09-19 1998-09-15 Procede et dispositif servant a eclairer un affichage

Country Status (2)

Country Link
AU (1) AU9487298A (fr)
WO (1) WO1999015932A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370309C (zh) * 2005-08-25 2008-02-20 中国科学院西安光学精密机械研究所 用多棱锥镜和多棱台镜产生空间光点阵列的设备和方法
US8364589B2 (en) 2000-07-20 2013-01-29 Citicorp Development Center, Inc. Method and system for performing a cash transaction with a self-service financial transaction terminal
CN103366656A (zh) * 2012-03-27 2013-10-23 飞腾动力公司 非远心电压成像光学系统(ntvios)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588504A1 (fr) * 1992-09-16 1994-03-23 International Business Machines Corporation Dispositif d'éclairage par l'arrière pour un dispositif d'affichage à cristal liquide
US5379083A (en) * 1994-02-15 1995-01-03 Raychem Corporation Projector
WO1996010148A1 (fr) * 1994-09-27 1996-04-04 Minnesota Mining And Manufacturing Company Film de regulation de luminance
EP0710036A2 (fr) * 1994-10-28 1996-05-01 Seiko Instruments Inc. Projecteur d'images
WO1996027757A1 (fr) * 1995-03-03 1996-09-12 Minnesota Mining And Manufacturing Company Film photodirecteur comportant une surface structuree de hauteur variable et article en etant fait

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588504A1 (fr) * 1992-09-16 1994-03-23 International Business Machines Corporation Dispositif d'éclairage par l'arrière pour un dispositif d'affichage à cristal liquide
US5379083A (en) * 1994-02-15 1995-01-03 Raychem Corporation Projector
WO1996010148A1 (fr) * 1994-09-27 1996-04-04 Minnesota Mining And Manufacturing Company Film de regulation de luminance
EP0710036A2 (fr) * 1994-10-28 1996-05-01 Seiko Instruments Inc. Projecteur d'images
WO1996027757A1 (fr) * 1995-03-03 1996-09-12 Minnesota Mining And Manufacturing Company Film photodirecteur comportant une surface structuree de hauteur variable et article en etant fait

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8364589B2 (en) 2000-07-20 2013-01-29 Citicorp Development Center, Inc. Method and system for performing a cash transaction with a self-service financial transaction terminal
CN100370309C (zh) * 2005-08-25 2008-02-20 中国科学院西安光学精密机械研究所 用多棱锥镜和多棱台镜产生空间光点阵列的设备和方法
CN103366656A (zh) * 2012-03-27 2013-10-23 飞腾动力公司 非远心电压成像光学系统(ntvios)

Also Published As

Publication number Publication date
AU9487298A (en) 1999-04-12

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