POLARIZATION OPTICAL SYSTEM AND PROJECTION-TYPE LIQUID-CRYSTAL DISPLAY DEVICE
PROBLEM TO BE SOLVED: To obtain a projection-type liquid crystal display device using a liquid-crystal light valve, wherein emission light which is not modulated by the liquid-crystal light valve is efficiently absorbed and high contrast can be obtained. SOLUTION: A polarization optical system 1 inc...
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| creator | OKAMIDO AKIRA YAMADA AKIHIRO SAMEJIMA KENJI |
| description | PROBLEM TO BE SOLVED: To obtain a projection-type liquid crystal display device using a liquid-crystal light valve, wherein emission light which is not modulated by the liquid-crystal light valve is efficiently absorbed and high contrast can be obtained. SOLUTION: A polarization optical system 1 includes a first polarization plate 7, arranged at the light incident side of the liquid-crystal light valve 2, for transmitting first polarized light (s-polarized light) included in light incident on the liquid-crystal light valve 2 from an illumination optical system (4, 5a and 5b)and a second polarization plate 9L, arranged at the light exit side of the liquid-crystal light valve 2, for transmitting second polarized light (p-polarized light), different from the first polarized light (s-polarized light), included in imaging light emitted from the liquid-crystal light valve 2 to a projection optical system 10. The second polarization plate 9L is configured in such a way that its light-incident face 9Lf is concave toward the liquid-crystal light valve 2. COPYRIGHT: (C)2009,JPO&INPIT |
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SOLUTION: A polarization optical system 1 includes a first polarization plate 7, arranged at the light incident side of the liquid-crystal light valve 2, for transmitting first polarized light (s-polarized light) included in light incident on the liquid-crystal light valve 2 from an illumination optical system (4, 5a and 5b)and a second polarization plate 9L, arranged at the light exit side of the liquid-crystal light valve 2, for transmitting second polarized light (p-polarized light), different from the first polarized light (s-polarized light), included in imaging light emitted from the liquid-crystal light valve 2 to a projection optical system 10. The second polarization plate 9L is configured in such a way that its light-incident face 9Lf is concave toward the liquid-crystal light valve 2. 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SOLUTION: A polarization optical system 1 includes a first polarization plate 7, arranged at the light incident side of the liquid-crystal light valve 2, for transmitting first polarized light (s-polarized light) included in light incident on the liquid-crystal light valve 2 from an illumination optical system (4, 5a and 5b)and a second polarization plate 9L, arranged at the light exit side of the liquid-crystal light valve 2, for transmitting second polarized light (p-polarized light), different from the first polarized light (s-polarized light), included in imaging light emitted from the liquid-crystal light valve 2 to a projection optical system 10. The second polarization plate 9L is configured in such a way that its light-incident face 9Lf is concave toward the liquid-crystal light valve 2. 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SOLUTION: A polarization optical system 1 includes a first polarization plate 7, arranged at the light incident side of the liquid-crystal light valve 2, for transmitting first polarized light (s-polarized light) included in light incident on the liquid-crystal light valve 2 from an illumination optical system (4, 5a and 5b)and a second polarization plate 9L, arranged at the light exit side of the liquid-crystal light valve 2, for transmitting second polarized light (p-polarized light), different from the first polarized light (s-polarized light), included in imaging light emitted from the liquid-crystal light valve 2 to a projection optical system 10. The second polarization plate 9L is configured in such a way that its light-incident face 9Lf is concave toward the liquid-crystal light valve 2. COPYRIGHT: (C)2009,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY FREQUENCY-CHANGING HOLOGRAPHY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | POLARIZATION OPTICAL SYSTEM AND PROJECTION-TYPE LIQUID-CRYSTAL DISPLAY DEVICE |
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