MX9710382A - Sistema de proyeccion de pantalla de cristal liquido que utiliza polarizadores de pelicula optica de capas multiples. - Google Patents

Sistema de proyeccion de pantalla de cristal liquido que utiliza polarizadores de pelicula optica de capas multiples.

Info

Publication number
MX9710382A
MX9710382A MX9710382A MX9710382A MX9710382A MX 9710382 A MX9710382 A MX 9710382A MX 9710382 A MX9710382 A MX 9710382A MX 9710382 A MX9710382 A MX 9710382A MX 9710382 A MX9710382 A MX 9710382A
Authority
MX
Mexico
Prior art keywords
reflective polarizer
lcd
liquid crystal
crystal display
projection system
Prior art date
Application number
MX9710382A
Other languages
English (en)
Other versions
MXPA97010382A (es
Inventor
Stephen J Willett
Michael F Weber
Andrew J Ouderkirk
James M Jonza
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of MX9710382A publication Critical patent/MX9710382A/es
Publication of MXPA97010382A publication Critical patent/MXPA97010382A/es

Links

Classifications

    • 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
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising 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
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133545—Dielectric stack polarisers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

Se describe un sistema de proyeccion de pantalla de cristal líquido (LCD) (50) que incluye un panel de proyeccion (52), una fuente luminosa (56) y un reflector (58). El panel de proyeccion incluye una LCD (60) y un polarizador (64) sobre un lado de la LCD, y el polarizador reflectivo es una pila de capas multiples de pares (44) de capas de material adyacentes (41, 43). Cada uno de los pares de capas muestra una diferencia en el índice de refraccion entre las capas adyacentes en una primera direccion en el plano del polarizador de reflexion, y no muestra esencialmente diferencia en el índice de refraccion entre las capas adyacentes, en una segunda direccion en el plano del polarizador reflectivo y ortogonal a la primera direccion. Una placa (66) de un cuarto de onda es asegurada al polarizador reflectivo. Los rayos luminosos provenientes de la fuente de luz pasan ya sea a través del polarizador refelctivo y sobre la LCD, o son reflejados nuevamente hacia la fuente luminos, dependiendo de su polarizacion. La luz que es reflejada por el reflector nuevamente hacia la LCD. El uso de la placa de un cuarto de onda y el reflector, ayudan a reciclar que la que pudiera ser típicamente considerada como luz desechada, mientras que al mismo tiempo se reduce la constitucion de calor dentro de la LCD.
MXPA/A/1997/010382A 1995-06-26 1997-12-18 Sistema de proyeccion de pantalla de cristal liquido que utiliza polarizadores de pelicula optica de capas multiples MXPA97010382A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/494,978 US6088067A (en) 1995-06-26 1995-06-26 Liquid crystal display projection system using multilayer optical film polarizers
US08494978 1995-06-26

Publications (2)

Publication Number Publication Date
MX9710382A true MX9710382A (es) 1998-07-31
MXPA97010382A MXPA97010382A (es) 1998-11-09

Family

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Also Published As

Publication number Publication date
EP0835468A1 (en) 1998-04-15
CN1191610A (zh) 1998-08-26
AU692716B2 (en) 1998-06-11
AU6377296A (en) 1997-01-30
WO1997001780A1 (en) 1997-01-16
BR9609294A (pt) 1999-05-11
CA2224459A1 (en) 1997-01-16
JP3874797B2 (ja) 2007-01-31
DE69625202D1 (de) 2003-01-16
EP0835468B1 (en) 2002-12-04
KR19990028340A (ko) 1999-04-15
TW436653B (en) 2001-05-28
JPH11508701A (ja) 1999-07-27
US6088067A (en) 2000-07-11
IL118470A0 (en) 1996-09-12

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