Cooling mechanism of optical modulator, optical modulator attachment unit and projector
AssigneeSeiko Epson Corporation
InventorNobuo Watanabe
Life of this patent
Estimating the term…
Abstract
A support member (311) for supporting liquid crystal panels (441R, 441G, 441B) is disposed parallel to a cooling air flow channel formed between a light-incident end of a cross dichroic prism (45) and the respective liquid crystal panels and is constructed by a pair of components for supporting a neighborhood of the ends of the respective liquid crystal panels, so that the gap between the light-incident end of the cross dichroic prism and the respective liquid crystal panels facing the cooling air flow channel can be enlarged, thereby flowing cooling air sufficient for cooling a polarizer (446) and the respective liquid crystal panels in a direction of the cooling air flow channel for efficiently cooling them.
Claims24
A cooling mechanism of an optical modulator plurally attached to a light-incident end of a prism in plural, the optical modulator modulating a plurality of color lights in accordance with image information and emitting the modulated light to the light-incident end of the prism, the cooling mechanism comprising:
- a base member attached to the light-incident end of the prism;
- a support member attached to the base member that supports the optical modulator, the support member including a pair of components disposed parallel to a cooling air flow channel formed between the light-incident end of the prism and the optical modulator, the pair of components supporting a neighborhood of an end of the optical modulator;
- a polarizer provided on a light-emitting side of the optical modulator;
- and
- a polarizer fixing plate that holds and fixes the polarizer provided between the base member and the optical modulator, the polarizer fixing plate holding and fixing the polarizer being spaced apart with a predetermined gap from the light-incident end of the prism.
An optical modulator attachment unit that attaches an optical modulator on a light-incident end of a prism, comprising:
- a holding frame that holds the optical modulator;
- a base member attached to a light-incident end of the prism;
- a pair of support members attached between the base member and the holding frame, the support member being formed by a pair of components that support a neighborhood of an end of the optical modulator;
- a polarizer provided on a light-emitting side of the optical modulator;
- and
- a polarizer fixing plate that holds and fixes the polarizer provided between the base member and the holding frame, the polarizer fixing plate holding and fixing the polarizer being spaced apart from the light-incident end of the prism with a predetermined gap.
A cooling mechanism of an optical modulator plurally attached to a light-incident end of a prism in plural, the optical modulator modulating a plurality of color lights in accordance with image information and emitting the modulated light to the light-incident end of the prism, the cooling mechanism comprising:
- a base member attached to the light-incident end of the prism;
- a support member attached to the base member that supports the optical modulator, the support member including a pair of components disposed parallel to a cooling air flow channel formed between the light-incident end of the prism and the optical modulator, the pair of components supporting a neighborhood of an end of the optical modulator;
- a cooling fan that cools the optical modulator;
- and
- a wind guide provided between the cooling fan and the optical modulator that introduces the cooling air from the cooling fan in a predetermined direction, the wind guide including a first guide plate that directs the cooling air toward between the light-incident end of the prism and the optical modulator.
Dependencies are inferred from the claim text.