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Projector

A projector and optical system technology, applied in the field of spatial pixel array projectors, can solve problems such as image quality degradation

Inactive Publication Date: 2009-05-13
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since the sub-pixels are arranged at narrow intervals in the short-side direction of the sub-pixels, color light is also incident on the left and right adjacent sub-pixels that are different from the sub-pixels corresponding to the color light to cause color mixing, and prone to image quality degradation
[0011] In addition, the case where four kinds of colored light are used is taken as an example for description here, but the above-mentioned problem is not limited to this structure, and the same problem is also encountered in the case where three or more than five kinds of colored light are used.

Method used

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no. 1 Embodiment approach

[0052] First, use Figure 1- Figure 9 The first embodiment of the present invention will be described.

[0053] FIG. 1 is a schematic configuration diagram showing a projector according to this embodiment. The projector 1 is roughly configured to include: a light source 10 for emitting light including visible light; a polarization conversion optical system 70 for converting the non-polarized light emitted by the light source 10 into a polarization direction consistent the light; the color separation optical system 20 is used to separate the light from the light source 10 into four different color lights in the wavelength range; the light modulation optical system 30 is used to perform light modulation according to the image information from the outside, and form each The optical image of a color light (the first optical image); the color synthesis optical system 50 is used to synthesize the formed first optical image to form a colored optical image; and the projection optical...

no. 2 Embodiment approach

[0091] Next, use Figure 10 A second embodiment of the present invention will be described with reference to FIG. 13 . In addition, in this embodiment, the same members or parts as those in the above-mentioned first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0092] Figure 10 (a) and Figure 10 (b) is a plan view and a side view respectively showing a schematic configuration of the projector according to the present embodiment. The projector 2 is roughly configured by including the following parts: a light source 10 for emitting light including visible light; a polarization conversion optical system 70 for converting the unpolarized light emitted by the light source 10 converted into light with consistent polarization directions; the color separation optical system 20 is used to separate the light from the light source 10 into three kinds of color lights with different wavelength regions; the light modulation o...

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Abstract

A projector which is small in size and excellent in light utilization efficiency while keeping the advantage of a spatially-pixel-arrangement type is provided. The luminous flux emitted from a light source is separated by a color separation system into a plurality of kinds of colors of light different in exit direction. These separated colors of light are modulated by a light valve, to form first optical images. The light valve has a plurality of sub-pixels provided corresponding to the colors of light and micro-lenses to focus the colors of light corresponding to the sub-pixels. The sub-pixels are structured in a size nearly equal to a size of a color of light to be focused on the relevant sub-pixel by micro-lenses. Accordingly, the first optical image is in a form non-analogous with the actual projection image. The first optical images are converted into second optical images having a desired aspect ratio by an anamophic projection system, and then projected.

Description

technical field [0001] The present invention relates to a spatial pixel array projector, which is used to spatially separate the light emitted by a light source into multiple color lights, and implement color by making the separated color lights incident on corresponding sub-pixels. show. Background technique [0002] As a method of generating a color image in a projector, it is generally a method of using the three primary colors of red light (R), green light (G) and blue light (B). However, this method cannot completely include the color gamut. In order to reproduce the real and natural color of the object, it is necessary to expand the color gamut, plus the previous red light (R), green light (G) and blue light (B), for example, if the color light near 510nm can be independently modulated, Then, the expressible color gamut can be greatly expanded, and as a result, for example, vivid cyan (cyan) and dark green can be expressed. According to above-mentioned this kind of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/00G02F1/13H04N5/74H04N9/31
CPCG03B21/00G03B21/006
Inventor 伊藤嘉高
Owner SEIKO EPSON CORP