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Projection apparatus

A technology of projection device and polarization conversion, which is applied in the direction of projection device, photography, stereophotography, etc., can solve problems such as uneven color, and achieve the effect of improving quality

Inactive Publication Date: 2014-03-26
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, there is a problem that when the 3D glasses are not tilted, color unevenness in the 3D image is perceived

Method used

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Examples

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Embodiment Construction

[0039] Hereinafter, an example of a projection apparatus according to an embodiment of the present invention will be described in the following order with reference to the drawings. It should be noted that the present invention is not limited to the examples to be described below.

[0040] 1. Schematic demonstration configuration of the projection device

[0041] 2. The problem solved by the present invention

[0042] 3. Application examples of projection devices

[0043] 4. Exemplary Arrangement Graphics of Optical Components of Projection Device

[0044] 5. Demonstration installation mode of the polarization conversion component in the projection device

[0045] 6. Differences between related art and the present invention

[0046] 7. Various Modified Embodiments

[0047] (1. Schematic demonstration configuration of projection device)

[0048] figure 1 One schematic exemplary configuration of a projection device is described. Projection device (projector) 1 includes c...

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Abstract

A projection apparatus includes a color synthesis section, a polarization conversion section, and a projection lens. The color synthesis section is configured to combine light in three primary colors of red light, green light, and blue light and emit combined light. The polarization, conversion section includes a first polarization conversion member having a slow axis with an angle other than angles of 0 DEG, 90 DEG, 180 DEG, and 270 DEG, and a second polarization conversion member having a slow axis with an angle that is opposite, to the slow axis of the first polarization conversion member by 180 DEG . The projection lens is configured to emit light output from the polarization conversion section.

Description

technical field [0001] The present invention relates to a projection device for performing video display. Background technique [0002] Recently, an LCD (Liquid Crystal Display) projector using 3D (three-dimensional) active shutter technology has been developed. Active shutter technology is a type of video display technology that uses it to create a sense of depth. Using such active shutter technology, stereoscopic viewing can be achieved with parallax created by alternately displaying left-eye and right-eye pictures and alternately blocking the right and left eye views of the 3D glasses in synchronization with the switching of the pictures. [0003] Here, the problem is that such a projector that projects a 3D image as described above is difficult to perform quality control compared to a projector that projects a 2D (two-dimensional) image. The reason for this is that 3D glasses transmit only components polarized in a specific direction in terms of polarized light after r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G02B27/26G02B30/25H04N13/363
CPCG03B21/208G03B33/12G03B35/26H04N13/337H04N13/324H04N13/356H04N13/363G03B21/2073G02B30/25
Inventor 本间圭祐
Owner SONY CORP