Prism system and projector with same

Abstract

A prism system and a projector comprising the same are provided. The prism system comprises: a first prism (2) adapted to couple with a diamond DMD chip and having first to third planes, and a second prism (3) having fourth to sixth planes. The first plane (21) is configured to receive an incident light at a predetermined angle and refract the incident light, the second plane (22) is configured to receive the light refracted by the first plane of the first prism and totally reflect the refracted light in the first prism, and the third plane (23) is parallel to a plane in which the diamond DMD chip is located and is configured to receive the light totally reflected by the second plane, refract and output the received light to the diamond DMD chip, and receive a reflected light from the diamond DMD chip and output the reflected light received from the diamond DMD chip at different angles based on a control of the diamond DMD chip. The second prism is configured to receive the reflected light output from the first prism and output the received reflected light at different angles based on different incidence angles of the reflected light received from the first prism. One of the fourth to sixth planes of the second prism is parallel to the second plane of the first prism and is configured to receive the reflected light output from the first prism.

Description

technical field [0001] The invention relates to a prism system and a projector with the prism system. Background technique [0002] LED (Light Emitting Diode, Light Emitting Diode) micro-projector has the advantages of high efficiency, good contrast, long life, etc., and plays an important role in the micro-projection market. At present, LED micro-projectors mainly use traditional DMD (Digital Micro mirror Device) chips (orthogonal DMD chips) combined with prism systems to achieve projection. In traditional DMD chips, orthogonal pixel arrays are used to generate 1280 pixels. ×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 one graphic pixel on the display device, but in order to achieve higher resolution The new DMD chip adopts a diamond-shaped pixel arrangement, which is a diamond-shaped DMD chip, that is, the micro-mirror unit is rotated by 45° compared to the tra...

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

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