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Projection optical apparatus and projector

A technology of projection optics and projectors, which is applied in optics, projection devices, nonlinear optics, etc., and can solve problems such as increased load and damage

Active Publication Date: 2018-08-07
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In a projector equipped with a projection optical device that is heavier than the projection lens described in Patent Document 1, and a projection lens having a center of gravity farther from the flange portion, since the load increases, serious damage may occur

Method used

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  • Projection optical apparatus and projector
  • Projection optical apparatus and projector
  • Projection optical apparatus and projector

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Embodiment Construction

[0052] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each of the drawings shown below, each component is formed in a recognizable size on the drawing, and therefore the size and ratio of each component are appropriately different from the actual size.

[0053] Hereinafter, the projector of this embodiment will be described.

[0054] The projector of this embodiment modulates light emitted from a light source based on image information, and enlarges and projects the modulated light on a projection surface such as a screen.

[0055] 〔The main structure of the projector〕

[0056] figure 1 It is a side view schematically showing the main configuration of the projector 1 of the present embodiment. figure 2 It is a perspective view showing the appearance of the projector 1 .

[0057] Such as figure 1 , figure 2 As shown, a projector 1 includes an image forming apparatus 1A, a projection optical device 1B d...

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Abstract

The invention provides a projection optical apparatus and a projector. The projection optical apparatus is stably supported by an image forming apparatus. The projection optical apparatus (1B) includes an optical system and a projection optic enclosure (5) that accommodates the optical system. The optical system includes a first optical system on which the image light is incident, and the projection optic enclosure (5) includes a first accommodation section (51) that accommodates the first optical system and includes a flange section (512) (supported section) supported by the image forming apparatus (1A) and a first wall section (531) and a second wall section (532) that face each other in a first direction (Y direction) that intersects the direction along a line that connects the flange section (512) to the center (G) of gravity of the projection optical apparatus (1B).

Description

technical field [0001] The invention relates to projection optics and projectors. Background technique [0002] Conventionally, there is known a projector that includes: a light modulation device that modulates light emitted from a light source based on image information; and a projection optical device that projects the light modulated by the light modulation device onto a projection surface. . In addition, a projector equipped with a projection optical device equipped with a short-focus lens to enable projection from a position close to the projection surface (for example, refer to Patent Document 1) and a projector equipped with a light modulator that changes the direction of light emitted from a light modulation device have also been proposed. A projector with projection optics for projection. [0003] The projector described in Patent Document 1 includes an optical unit having a projection optical device (projection lens) and a holding unit, an exterior case, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14
CPCG03B21/14G03B21/145H04N9/3141G03B21/28G03B17/54G02F1/13H04N5/64
Inventor 黑田一平槌谷浩
Owner SEIKO EPSON CORP