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Three-sheet type LCOS projection machine optical engine of three-color LED illumination

An LED lighting and optical engine technology, applied in optics, optical components, instruments, etc., can solve the problems of poor reliability and stability, narrow color gamut of displayed images, complex system heat dissipation, etc., and achieve stable and reliable work, simple heat dissipation, and system simple structure

Inactive Publication Date: 2008-12-24
SHANGHAI FOREAL OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The optical engine has the shortcomings of short working life of UHP light source, narrow color gamut of displayed images, complicated system heat dissipation, and poor reliability and stability.

Method used

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  • Three-sheet type LCOS projection machine optical engine of three-color LED illumination
  • Three-sheet type LCOS projection machine optical engine of three-color LED illumination
  • Three-sheet type LCOS projection machine optical engine of three-color LED illumination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A three-chip LCOS projector optical engine illuminated by three-color LEDs, including a red light polarization beamsplitter prism 71, a green light polarization beamsplitter prism 72, a blue light polarization beamsplitter prism 73, an X-shaped color combining prism 74, and a red light contrast compensation film 81 , green light contrast compensation film 82, blue light contrast compensation film 83, red light LCOS 91, green light LCOS 92, blue light LCOS 93, projection lens 10, red light polarization beam splitter prism 71, green light polarization beam splitter prism 72, blue light polarization beam splitter prism 73 and X-shaped color combining prism 74 are optically coupled to form a traditional color combining component 7, red light contrast compensation film 81, green light contrast compensation film 82, blue light contrast compensation film 83, red light LCOS 91, green light LCOS 92, blue light LCOS 93. The projection lens 10 is optically coupled with the color co...

Embodiment 2

[0021] Except for the following differences, the remaining parts are identical to Example 1. The feature of this embodiment is that the structures of the red, green and blue lighting systems are completely the same.

Embodiment 3

[0023] Except for the following differences, the remaining parts are identical to Example 1 and Example 2. The feature of this embodiment is that the red, green and blue lighting systems are arranged on the same side of the LCOS image projection optical system.

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Abstract

The invention provides a three plate type LCOS projecting camera optical engine using tricolor LED for illumination, which pertains to technical field of photoelectric demonstration. Based on a background technology, the optical engine adopts a tricolor LED light source of red, green and blue to replace a UHP light source in the background technology, and three lighting systems with the same structure of tricolor light of the red, the green and the blue to replace a color separation lighting system in the background technology; the three lighting systems are arranged at one side of an X-CUBE in a way that the optical axes thereof are parallel mutually; three light emitting chips of the tricolor LED of the red, the green and the blue are arranged on a same heating panel. The four technical characteristics lead the optical engine to have the advantages of long service life, broad color range for displaying the image, high degree of saturation, no ultraviolet and infrared light in the system, simple heat dissipation, stable and reliable work, no need of carrying out color separation to the light source, simple system structure, and being beneficial to reducing the cost.

Description

technical field [0001] The invention relates to a three-chip LCOS projector optical engine illuminated by three-color LEDs, belonging to the technical field of photoelectric display. Background technique [0002] There is a three-chip LCOS projector optical engine in the background technology, including UHP light source, light rod, relay lens, dichroic mirror, reflector, prepolarizer, polarization beam splitter prism (PBS), LCOS chip, X-shaped combination Chromatic prisms and projection lenses. See figure 1 . The light emitted from the UHP light source is homogenized by the light bar, and then passes through the relay lens, dichroic mirror, and reflector to form red, green, and blue three-color light. After the three-color light passes through their respective pre-polarizers, their polarization states are relatively As far as the respective polarization beam splitters are concerned, the S light is reflected by the respective polarization beam splitters to the respective L...

Claims

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Application Information

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IPC IPC(8): G03B21/14G03B21/20G02B27/28G02B27/10
Inventor 辜长明郑耀沈荣桂刘啸虎毛荣壮
Owner SHANGHAI FOREAL OPTOELECTRONICS
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