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Optical device and image display apparatus

A technology for image display devices and optical devices, which is applied to optical components, optics, projection devices, etc., and can solve problems such as light weight that has not been considered

Active Publication Date: 2017-06-13
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in Patent Document 1, weight reduction is not considered

Method used

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  • Optical device and image display apparatus
  • Optical device and image display apparatus
  • Optical device and image display apparatus

Examples

Experimental program
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no. 1 approach

[0045] In this embodiment, the optical device 2 and an image display device including the optical device 2 will be described based on the drawings.

[0046] figure 1 It is a schematic diagram showing the optical configuration of the image display device according to the first embodiment. figure 2 It is a schematic diagram showing how the image light L is shifted. image 3 It is a block diagram showing the electrical configuration of the image display device. Furthermore, in the present embodiment, the optical device 2 is applied to the projector 1 as an image display device.

[0047] Such as figure 1 As shown, the projector 1 as an image display device is an LCD-type projector, and is configured to include: a light source 102; reflecting mirrors 104a, 104b, 104c; dichroic mirrors 106a, 106b; liquid crystal display elements 108R, 108G, 108B ; Dichroic prism 110; Optical device 2 as an optical path deflecting element; And projection optical device 112 and so on.

[0048] T...

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Abstract

The invention discloses an optical device with light weight and ensuring rigidity, and an image display apparatus containing the same. The optical device (2) includes: an optical portion (a glass plate (21)) that has a light incident face (a main surface (21a)) onto which light (image light L) is incident; a movable portion (22) that is swingable while supporting the glass plate (21); a shaft portion(24) that supports the movable portion (22) so as to swing the movable portion around a swing axis; and a supporting portion (23) that supports the shaft portion (24). The supporting portion (23) has a rib structure (31) which is formed by connecting ribs (30). The rib structure (30) is provided on a single surface (a surface part (23b)) of the supporting portion (23).

Description

technical field [0001] The present invention relates to an optical device and an image display device equipped with the optical device. Background technique [0002] Conventionally, there is known an image display device (projector) that modulates light emitted from a light source by a light modulation device (liquid crystal display element, etc.) according to image information, and enlarges and projects light by a projection optical device. high resolution. [0003] As an optical device that achieves high resolution, it is known that the optical path of the image light emitted from the light modulation device is shifted by rotating (rocking) the optical part (glass plate, etc.) around the axis, thereby virtually improving the resolution. efficient optics. [0004] And, currently, by reducing the weight of the optical device, the image display device can be reduced in weight. [0005] In Patent Document 1, an optical path control device is disclosed. The optical path cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08G02B26/10H04N9/31
CPCG02B26/085G02B26/0875G02B26/10G02B26/105H04N9/3188G03B21/006G03B21/14
Inventor 日野真希子
Owner SEIKO EPSON CORP