Optical device and projector

A technology of optical devices and dimming devices, which is applied in the fields of projectors and optical devices, can solve problems such as increased heat density, insufficient cooling of liquid crystal panels, and difficulty in fully utilizing the performance of liquid crystal panels, so as to improve cooling performance, enhance strength, Effect of improving cooling performance
CN1402081AInactive Publication Date: 2003-03-12SEIKO EPSON CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SEIKO EPSON CORP
Publication Date
2003-03-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a structure to attach a liquid crystal panel to a prism, which enables further enhancements in cooling capabilities. The structure includes a storing member fixed on a base and holding a holding frame, where a liquid crystal panel is held. Erected pieces to form a space to receive the holding frame are formed protruding on both left and right sides at the light incident side. Protrusions to form an air path with a cross-dichroic prism are formed on both left and right sides on the light emitting side. The liquid crystal panel is attached to the cross-dichroic prism through a holding member having an opening at a portion corresponding to the panel face of the liquid crystal panel.
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Description

technical field

[0001] The present invention is an optical device which integrates a dimming device for modulating colored light according to image information, a color synthesizing optical element for synthesizing the colored light modulated by the dimming device, and a projector using the optical device. Background technique

[0002] The mounting structure of a liquid crystal panel and a prism in a projector is disclosed in, for example, JP-A-2000-221587 or JP-A-2000-221588. In these publications, some measures are taken to improve the assembly performance and reliability of this part by housing the liquid crystal panel in the display panel frame and attaching it to the prism. At the same time, the cooling of the liquid crystal panel basically relies on the cooling of the air passage provided between the display panel frame and the prism.

[0003] However, in recent years, with the progress of miniaturization and high brightness of projectors, the heat density in the devi...

Claims

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