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Device and method for positional adjustment of light mobulator

A technology of a light modulation device and an adjustment device, which is applied to projection devices, image reproducers of projection devices, optics, etc., can solve the problems of downsizing the screen, large devices, and limited miniaturization of devices.

Inactive Publication Date: 2003-11-19
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in Conventional Example 1, in order to project an image on the screen and arrange the optical unit and the screen linearly along the optical axis of the projection lens, the screen must be large in size, thereby enlarging the entire device.
[0009] Also, in Conventional Example 2, since the reflecting device reflects the light projected from the projection lens through the mirror, the screen can be reduced compared with Conventional Example 1, but as long as the screen is used, the miniaturization of the entire device is limited.
[0010] So in either case, since the screen is required, there is the problem that the device must be larger, and it is desirable to solve this problem

Method used

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  • Device and method for positional adjustment of light mobulator
  • Device and method for positional adjustment of light mobulator
  • Device and method for positional adjustment of light mobulator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0068] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0069] 1. Projector structure using lens array

[0070] exist figure 1 In , a configuration of a projector 100 including a plurality of light modulating devices and a toning optical system to be adjusted according to a position adjusting device according to an embodiment of the present invention is shown.

[0071] The projector 100 has an integrator illumination optical system 110 , a color separation optical system 120 , a relay optical system 130 , an electro-optical device 140 , a cross dichroic prism 150 and a projection lens 160 constituting a color adjustment optical system.

[0072] The integrator illumination optical system 110 has a light source device 111 including a light source lamp 111A and a reflector 111B, a first lens array 113 , a second lens array 115 , a reflector 117 , and a superposition lens 119 . Through the reflector 111B, the light beam from t...

no. 2 example

[0181] Next, a second embodiment of the present invention will be described.

[0182] In the following description, the same structures and components as those of the above-mentioned first embodiment are denoted by the same symbols and their detailed descriptions are omitted or simplified.

[0183] In the position adjustment device of the light modulation device according to the first embodiment, when manufacturing a plurality of projectors 100 (optical unit 170 ), the same software is used and the same position adjustment is repeatedly performed.

[0184] On the contrary, the difference of the position adjustment device of the light modulation device of this embodiment is that, when manufacturing a plurality of projectors 100 (optical unit 170 ), when the position adjustment is normally completed, other software is subsequently used.

[0185] Specifically, in the optical unit 170 manufactured first, the position adjustment operation of the respective liquid crystal panels 141...

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PUM

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Abstract

In a light beam sensor (40) of a position adjuster, a light beam irradiated from a cross dichroic prism (150) is directly received by a CCD camera (41) via a beam splitter (451), so that the position adjuster can be adjusted without using a conventional projection screen and great size reduction of the position adjuster is possible, and, since only small space is required for installing the position adjuster, workspace can be efficiently utilized.

Description

technical field [0001] The present invention relates to a position adjustment device of a light modulation device and a position adjustment method of a light modulation device for performing mutual position adjustment of each light modulation device for manufacturing a projector having a device for separating a light beam emitted from a light source into a plurality of colored lights A color separation optical system, a plurality of light modulators for modulating the light of each color separated by the color separation optical system according to image information, and a toning optical system for synthesizing light beams modulated by each light modulation device. Background technique [0002] In the past, such a projector was used, that is, it has a plurality of light modulation devices (liquid crystal panels) that modulate a plurality of color lights one by one according to image information, a toning optical system (cross dichroic prism) that synthesizes the color lights ...

Claims

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Application Information

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IPC IPC(8): G02B7/00G02B27/18G02B27/62G02F1/13G03B21/00H04N9/31
CPCH04N9/3197G02B27/62G02B7/003H04N9/317
Inventor 北林雅志小岛广一
Owner SEIKO EPSON CORP