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Picture display device

A technology for image display devices and combined devices, which is applied in projection devices, image communications, image reproducers using solid-state color display devices, etc., can solve the problem that the response speed of color switching elements is not high enough, the light utilization efficiency is reduced, and the second problem cannot be solved. Second system and other issues

Inactive Publication Date: 2004-11-10
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, it cannot solve the problems of the second system, namely, color dispersion if the response speed of the color switching element is not high enough and reduced light utilization efficiency due to the use of a "field sequential system", and reduction in light utilization efficiency due to switching of the irradiated light problems caused by the need for color

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Examples

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no. 1 example

[0052] As in the first embodiment of the image display apparatus of the present invention, an example in which the present invention is applied to a two-panel projection type image display apparatus will be described.

[0053] The two-plate projection type image display device has transmissive liquid crystal elements 50, 52 as spatial light modulators; a dichroic mirror 60 as color combining means; a dichroic mirror as color dispersion means for the two transmissive liquid crystal elements 50, 52 40, 41; and dichroic mirrors 40, 41 and microlens array 51 as a color dispersion and convergence device for a transmissive liquid crystal element, such as figure 1 shown.

[0054] In the two-panel projection type image display apparatus, irradiation light emitted from a UHP lamp light source 10 as an irradiation light source is incident on an irradiation optical system 20 having functions such as beam cross-sectional shape correction, intensity balance, and expansion. Corner control ...

no. 2 example

[0065] As in the second embodiment of the image display device of the present invention, an example in which the present invention is applied to a two-panel projection type image display device will be described.

[0066] The two-plate projection type image display device in the second embodiment has transmissive liquid crystal elements 50, 52 as spatial light modulators; a polarizing beam splitter 61 as color combining means; as the two transmissive liquid crystal elements 50, 52 52 dichroic mirrors 40,41 of the color dispersion device; Image 6 shown.

[0067] First, irradiation light emitted from a UHP lamp light source 10 constituting an irradiation light source together with a red LED light source 11 (to be described later) is incident on an irradiation optical system 20 having, for example, beam cross-sectional shape correction , strength balance and expansion angle control functions.

[0068] The irradiation optical system 20 has a polarization conversion device 21 ca...

no. 3 example

[0080] As a third embodiment of the image display device of the present invention, an example in which the present invention is applied to a two-panel projection type image display device will be described.

[0081] The two-plate projection type image display device in the third embodiment has reflective liquid crystal spatial light modulators 101, 102 as spatial light modulators; polarizing beam splitter 140 as color combining means and linear polarization rotation for a specific wavelength range device (multilayer phase difference filter) 120; dichroic mirrors 40, 41 as the color dispersion device of the two reflective liquid crystal spatial light modulators 101, 102; and as the color dispersion and The transmission polarization selective holographic optical element 100 of the converging device, such as Figure 9 shown.

[0082] In this two-panel projection type image display apparatus, first, irradiation light emitted from a UHP lamp light source 10 as an irradiation light...

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Abstract

This invention is an image display device for performing color display of an image using two spatial light modulators. The image display device has a first spatial light modulator (52) for modulating a first wavelength range component of illuminating light from an illuminating light source (10), dichroic mirrors (40, 41) for separating second and third wavelength range components of the illuminating light and condensing the respective wavelength range components, a second spatial light modulator (50) for modulating the second and third wavelength range components, and a dichroic mirror (60) for combining modulated light emitted from the first and second spatial light modulators .

Description

technical field [0001] The invention relates to an image display device, in particular to a projection type image display device and a virtual image display device. Background technique [0002] In general, for an image display device such as a projection-type image display device or a virtual image image display device using a spatial light modulator, the following proposals have been made in order to achieve display of a color image. [0003] (1) Using one spatial light modulator, pixels R (red), G (green), and B (blue) are spatially arranged in the spatial light modulator, respectively. Color image display is achieved by using at least these three basic color pixels as a group and making each color pixel smaller than the size that can be resolved by the spatial resolution of the human eye. [0004] Systems for such displays include a system provided with a color filter for each pixel, a color-filterless system using a dichroic mirror and a microlens array described in JP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08G02B3/00G02B5/18G02B5/20G02B5/30G02B5/32G02F1/13G02F1/1335G02F1/13357G03B21/00G03B33/12
CPCG03B21/00H04N9/3167H04N9/3105G02F2001/133623G02F1/13362G03B21/005G03B21/006G02F1/133623H04N9/30
Inventor 武川洋田中义礼
Owner SONY CORP