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Manufacturing method of light combining light path of projection light machine

A technology of projection light engine and light-combining prism, which is applied in optics, optical components, instruments, etc., can solve problems such as insufficient projection brightness, achieve the effects of reducing production costs, improving projection brightness and projection effect

Inactive Publication Date: 2020-02-07
深圳慧新辰技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for making the combined light path of the projection light machine, aiming to solve the problem of insufficient brightness of single-chip LCOS technology projection in the prior art

Method used

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  • Manufacturing method of light combining light path of projection light machine
  • Manufacturing method of light combining light path of projection light machine
  • Manufacturing method of light combining light path of projection light machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The RGB light 50 emitted by the light source 10 reaches the dichroic lens 60, and the dichroic lens 60 divides the RGB light 50 into R light 52 and GB light 51; the GB light 51 passes through the dichroic lens 60 in the state of P light , enters the first PBS prism 80 , transforms into an S light state, reflects to the first LCOS chip 70 , transforms into a P light state and passes through the first PBS prism 80 to the light-combining prism 90 .

[0054] The R light 52 passes through the dichroic lens 60 and is in the S light state, reflects into the second PBS prism 81, and then reflects into the second LCOS chip 71, and the second LCOS chip 71 converts the S light state into the P light state, and then passes through The second PBS prism 81 to the light combining prism 90 .

[0055] The GB light 51 and R light 52 on the light-combining prism 90 are combined by the light-combining prism 90, and the light-combining light is combined to form a new RGB light 50, and the n...

Embodiment 2

[0058] Along the advancing direction of the RGB light 50, the condenser lens group 20, the fly eye lens 30, the third polarization converter 40, and the first relay mirror 11 are sequentially arranged; 30. After the third polarization converter 40 and the first relay mirror 11, it enters the dichroic lens 60 to form GB light 51 and R light 52 to realize light splitting.

[0059] Then, the steps in the first embodiment are adopted to realize the subsequent photosynthesis process.

Embodiment 3

[0061] A second relay mirror 12 is arranged between the dichroic lens 60 and the first PBS prism 80. The dichroic lens 60 divides the RGB light 50 into the GB light 51R light 52, and the GB light 51 is in the P light state and passes through After passing through the second relay mirror 12, it enters the first PBS prism 80; under the action of the second relay mirror 12, it is convenient for focusing and space utilization.

[0062] A third relay mirror 13 is arranged between the dichroic mirror 60 and the second PBS prism 81, and the R light 52 passes through the third relay mirror 13 and enters the second PBS prism 81; Under the action, it is convenient for focusing and space utilization.

[0063] Then adopt the steps and procedures in Embodiment 1 to realize the follow-up photosynthesis procedure.

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Abstract

The invention relates to the technical field of a light combining light path of a projection light machine, and discloses a manufacturing method of the light combining light path of the projection light machine. The method comprises the following steps: (1) a light source emits RGB light rays to a dichroic lens, which divides the RGB light rays into an R light ray and a GB light ray; (2) the GB light ray enters a first PBS prism in an S light state, then enters a first LCOS chip after being reflected, is converted to be in a P light state through the first LCOS chip, and then, penetrates through the first PBS prism to reach a light combining prism; (3) the R light ray enters a second PBS prism in an S light state, then enters a second LCOS chip after being reflected, is converted to be ina P light state through the second LCOS chip, and then penetrates through the second PBS prism to reach the light combining prism; and (4) the light combining prism combines the GB light ray and the Rlight ray, and the combined light is projected to a screen through a projection objective lens. Through light splitting and light combining, a double-LCOS projection light path is finally formed; through the light path, the manufacturing cost is effectively reduced, and meanwhile, the projection brightness and the projection effect are improved.

Description

technical field [0001] The patent of the present invention relates to the technical field of the combined light path of the projection light machine, and specifically relates to the manufacturing method of the light combined light path of the projection light machine. Background technique [0002] With the development of society, stereoscopic projection technology has gradually matured, especially the application of LCoS technology, which has ushered in rapid development of projection display technology and further reduced costs. [0003] At present, the emergence of micro-projectors has made the traditional large projectors compact, portable, miniaturized, entertaining, and practical, making projection technology closer to life and entertainment. [0004] In the prior art, the optical path of the micro-projector adopts single-chip LCOS technology to realize projection, but single-chip LCOS technology easily leads to insufficient brightness, or three-chip LCOS technology rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B27/10G02B27/14G02B27/28
CPCG02B27/1006G02B27/141G02B27/286G03B21/206G03B21/2073
Inventor 殷雪敏
Owner 深圳慧新辰技术有限公司