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Image display apparatus

一种图像显示装置、控制装置的技术，应用在放映装置、图像通信、仪器等方向，能够解决图像显示特性下降、光路控制装置驱动精度下降等问题

Inactive Publication Date: 2016-08-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of using an electromagnetic actuator as the actuator for changing the posture of the light-transmitting plate, due to the electromagnetic force acting between the electromagnetic actuator and the liquid crystal panel (including the support portion supporting the liquid crystal panel), The driving accuracy of the optical path control device is reduced
Therefore, there is a problem that image display characteristics are degraded

Method used

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no. 1 approach

[0058] figure 1 It is a diagram showing the optical configuration of the image display device according to the first embodiment of the present invention. figure 2 It is a figure which shows the state after moving video light. image 3 (a) and (b) are figure 1 The perspective view of the optical path control device included in the shown image display device. Figure 4 (a) is along the image 3 A sectional view of line A-A in (a), Figure 4 (b) is along image 3 Cross-sectional view of line B-B in (a). Figure 5 (a) and (b) are shown image 3 (a) and (b) are perspective views of the swing of the optical path control device. Image 6 It is a perspective view showing a fixed state of the electro-optical device and the projection lens. Figure 7 as well as Figure 8 respectively Image 6 A partially enlarged expanded view of . Figure 9 It is a side view showing the fixing state of the electro-optical device and the projection lens. Figure 10 as well as Figure 11 Th...

no. 2 approach

[0112] Figure 12 It is a diagram showing an optical configuration of an image display device according to a second embodiment of the present invention. Figure 13 is showing Figure 12 A top view of the positional relationship between the electro-optical device and the optical path control device of the image display device shown.

[0113] Hereinafter, an image display device according to a second embodiment of the present invention will be described, but the description will focus on the differences from the above-mentioned embodiment, and the description of the same items will be omitted.

[0114] The image display device of the second embodiment is the same as the above-mentioned first embodiment except that it is an LCOS system. In addition, the same structure as the above-mentioned embodiment is denoted by the same code|symbol.

[0115] The projector (image display device) 7 of this embodiment is an LCOS projector, such as Figure 12 As shown, a light source device 7...

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PUM

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Abstract

The invention provides an image display apparatus that can improve the driving precision of an optical path control device and exert excellent image display characteristic. A projector includes a light source, liquid crystal panels (151) that modulate light emitted from the light source, a dichroic prism (154) that combines modulated light fluxes modulated by the liquid crystal panels with one another into video light and outputs the video light, and a pixel shift device (2) that changes the optical path of the video light outputted from the dichroic prism. The pixel shift device (2) includes a glass plate (21) on which the video light is incident and an electromagnetic actuator (25) that causes the glass plate to swing, and the electromagnetic actuator is arranged in a position outside the dichroic prism and different from the positions of the liquid crystal panels when viewed along the optical axis of the video light.

Description

technical field [0001] The present invention relates to an image display device. Background technique [0002] Conventionally, in order to increase the resolution of a projected image higher than that of a light modulation device such as a liquid crystal panel, a projector equipped with a technology for shifting the optical axis of video light emitted by the light modulation device (for example, Refer to Patent Document 1). The projector in Patent Document 1 has a dichroic prism that synthesizes R, G, and B modulated lights modulated by three liquid crystal panels to generate image light, and a projector that projects the image light emitted from the dichroic prism onto a screen. lens system, and an optical path control device (oscillating device) for displacing the optical axis of image light is disposed therebetween. [0003] In addition, the optical path control device of Patent Document 1 is configured to change the posture of the light-transmitting plate at a predeter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G03B21/00
CPCG02B26/10G03B21/006G03B21/142H04N9/3141H04N9/3188G02B19/0066G02B27/0905G02B27/0922G02B27/1026G02B27/1053G02B19/0014G03B21/005G02B27/149G03B21/147G02B26/0875H04N9/3105H04N9/317
Inventor 沟口安志
Owner SEIKO EPSON CORP