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Prism system and projector with same

A prism and plane technology, applied in the field of projectors, can solve problems such as inability to realize projection, diamond-shaped DMD chip matching, etc., and achieve the effect of simple structure, simple optical path, and reduced light energy loss

Active Publication Date: 2012-07-11
BYD SEMICON CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the prism system existing in the prior art cannot be matched with the new diamond-shaped DMD chip and cannot realize projection, the present invention provides a prism system capable of matching with the diamond-shaped DMD chip to realize projection and a projection system with the prism system instrument

Method used

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  • Prism system and projector with same
  • Prism system and projector with same
  • Prism system and projector with same

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Embodiment Construction

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The present invention provides the prism system of the first embodiment, such as figure 2 with image 3 As shown, the prism system includes a first prism 2 coupled with a diamond-shaped DMD chip 1 and has three vertical planes, wherein the three vertical planes of the first prism 2 are respectively the first plane 21, the second plane 22 and third plane 23;

[0026] The first plane 21 is configured to receive incident light at a certain angle and refract the incident light;

[0027] The second plane 22 is used for total internal reflection of the incident ligh...

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Abstract

The invention provides a prism system and a projector. The prism system comprises a first prism and a second prism, wherein the first prism is coupled with a diamond digital micro mirror device (DMD) chip and provided with three vertical planes; the three vertical planes of the first prism are a first plane, a second plane and a third plane; the first plane is used for receiving incident light at a certain angle and refracting the incident light; the second plane is used for performing total internal reflection on the refracted incident light in the first prism; the third plane is used for refracting the reflected incident light, outputting the refracted incident light to the diamond DMD chip, receiving reflected light output by the diamond DMD chip and outputting the reflected light at different angles according to control of the diamond DMD chip; the second prism is provided with three vertical planes, and one vertical plane is parallel to the second plane; and the second prism is used for receiving the reflected light output by the first prism and outputting the reflected light according to the angle of the reflected light. The prism systems and the projector can be matched with the diamond DMD chip to realize projection.

Description

technical field [0001] The invention relates to a prism system and a projector with the prism system. Background technique [0002] LED (LightEmittingDiode, light-emitting diode) micro-projector has the advantages of high efficiency, good contrast, long life, etc., and has a very important position in the micro-projection market. At present, LED micro-projectors mainly use traditional DMD (Digital Micromirror Device) chips (orthogonal DMD chips) combined with prism systems to achieve projection. In traditional DMD chips, orthogonal pixel arrays are used to generate 1280×720 Image, the angle between the rotation axis of each micro-mirror unit and the long side of the chip is 45°, that is, the micro-mirror unit is dedicated to a graphic pixel on the display device, but in order to achieve higher resolution and synchronization To reduce system cost, the new DMD chip adopts a diamond-shaped pixel arrangement, which is a diamond-shaped DMD chip, that is, the micro-mirror unit is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G02B27/18G03B21/14
CPCG02B27/1033G02B17/04G03B21/008
Inventor 姜莉莉孟庆涛祁高进
Owner BYD SEMICON CO LTD
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