Stereo projecting equipment

A stereoscopic projection and equipment technology, applied in stereophotography, photography, optics, etc., can solve problems affecting the overall projection effect of stereoscopic projection equipment

Inactive Publication Date: 2011-06-08
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the spatial arrangement of the two channels is asymmetrical, it will serious

Method used

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Examples

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail:

[0028] Such as figure 1 As shown, a stereoscopic projection device includes: a light source assembly 100; four polarizing beam-splitting prisms 201, 202, 203 and 204; two white light wave plates 301 and 302; two LCOS panels 401 and 402.

[0029] Wherein, the light source assembly 100 is used to emit a shaped and uniform natural light or an illumination beam of circularly polarized light. In order to realize color display, the illuminating light beam may be a white light beam, or sequential monochromatic light.

[0030] The polarization beam splitter 201 is used to split the natural light or the circularly polarized illumination beam into s-polarized light and p-polarized light whose polarization states are perpendicular to each other.

[0031] The s-polarized light beam enters the polarization beam splitter 202, is reflected and irradiates on...

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Abstract

The invention provides stereo projecting equipment which comprises a light source assembly, a first polarizing beam splitter, a second polarizing beam splitter, a third polarizing beam splitter, a fourth polarizing beam splitter, a first polarizing converter, a second polarizing converter, a first reflection type electrooptical modulator, a second reflection type electrooptical modulator and a projecting lens, wherein light emitted by the light source assembly is split into a first polarizing light beam and a second polarizing light beam by the first polarizing beam splitter, and the polarizing states of the two polarizing light beams are mutually vertical; the first polarizing light beam is reflected to the second polarizing light beam splitter by the first polarizing beam splitter; and the second polarizing light beam is sequentially transmitted through the first polarizing beam splitter and the second polarizing beam splitter. The invention has the advantages that a practical stereo projecting equipment scheme with two reflection type electrooptical modulators is proposed, and light split paths are symmetrical, thus, a binocular parallax projecting image with balanced brightness and contrast is obtained easily; and more excellent micro stereo projecting display is realized under the level of the prior art.

Description

technical field [0001] The invention relates to a stereoscopic projection device, in particular to a miniature stereoscopic projection device. Background technique [0002] Now, the maturity of reflective liquid crystal on silicon (LCOS) technology has brought about a huge breakthrough in projection display technology, the further reduction of cost, and the emergence of micro-projectors have gradually shifted the projector market from the business and education fields to family personal entertainment applications. The prosperity of the three-dimensional film and television market has further expanded the market for three-dimensional home theaters. Stereo TV has high cost and poor portability, and micro stereo projection is the development trend of stereo home theater in the future. [0003] The core of the stereoscopic projection technology based on polarized light is the polarization beam splitting technology. The incident light beam is separated into two illumination bea...

Claims

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Application Information

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IPC IPC(8): G02B27/26G02B27/18G02B27/28G03B21/14G03B35/18G02B30/25
Inventor 苏萍马建设周倩倪凯陈鼎如李艳
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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