Optical modulation device holding body, optical device, and projector

Abstract

An optical modulator holder, optical device and projector are capable of easily replacing an optical modulator and / or optical transducing element, increasing reworkability. A panel fixing plate (446) serving as the optical modulator holder comprises a fixing section main body (4461) substantially C-shaped as seen in a plan view, an arm (4462) formed at the front end of the fixing section main body (4461), pins (4463) projecting from the arm (4462), and spring members (4465) urging an emission-side polarizing plate (444), which serves as an optical transducing element, against the fixing section main body (4461). Liquid crystal panels (441R, 441G, 441B) serving as an optical modulator are held and fixed by the panel fixing plate (446) by passing the pins (4463) through holes (4413). Further, the emission-side polarizing plate (444) is inserted in the fixing section main body (4461), which is substantially C-shaped as seen in a plan view, and is urged by the spring members (4465) to be fixed in the fixing section main body (4461).

Description

technical field [0001] The present invention relates to a holder for holding a light modulating device for modulating color light according to image information, an optical device and a projector. Background technique [0002] So far, there are known a plurality of light modulation devices for modulating a plurality of color lights for each color light according to image information, a color synthesis optical device for combining the modulated color lights to form an optical image, and a projection lens for enlarging and projecting the formed optical image. Projector. [0003] In a projector, a color separation optical system such as a dichroic mirror separates a light beam emitted from a light source into three colors of light. In addition, three light modulators composed of a liquid crystal panel etc. modulate each color light according to image information. In addition, a color synthesizing optical device such as a cross dichroic prism synthesizes the modulated light of...

AI Technical Summary

Problems solved by technology

[0010] That is, when the polarizing plate is pulled out (peeled off) from the cross dichroic prism, the adhesive or the like remains on the cross dichroic prism, making it difficult to install a new polarizing plate on the cross dichroic prism and reposition it. Adjustment

[0011] In addition, the polarizing plate cannot be installed at the specified position due to adhesive residue etc. fixed on the cross dichroic prism.

[0012] In addition, since the polarizing plate is interposed between the light modulating device and the cross dichroic prism, when the polarizing plate is pulled out from the cross dichroic prism, the light modulating device must also be removed, and only the polarizing plate cannot be replaced.

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