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Illumination system and projection device using the illumination system

A lighting system and color separation technology, applied in projection devices, instruments, optics, etc., can solve the problems of complex structure, high cost, and bulky volume.

Active Publication Date: 2021-06-15
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the structure of the known lighting system 100 is complex and requires many optical elements, it has the disadvantages of high cost, bulky volume and poor optical efficiency

Method used

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  • Illumination system and projection device using the illumination system
  • Illumination system and projection device using the illumination system
  • Illumination system and projection device using the illumination system

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Embodiment Construction

[0026] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0027] figure 2 is a schematic diagram of an illumination system according to an embodiment of the present invention, image 3 yes figure 2 Schematic front view of the phosphor wheel. Please refer to figure 2 and image 3 , the lighting system 200 of this embodiment includes an exciting light source group 210, a dichroic element 220, a first lens group 230, a phosphor wheel 240, and at least one reflective element 250 ( figure 2 Take a reflecting mirror as an example) and the light c...

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Abstract

The invention discloses an illumination system, which includes an exciting light source group, a color separation element, a first lens group, a fluorescent powder wheel, at least one reflection element and a light concentrating element. The excitation light source group is used to provide the first color light beam. The light beam of the first color passes through the dichroic element and the first lens group sequentially and is transmitted to the phosphor wheel. The first part of the first color light beam is converted into the second color light beam by the light wavelength conversion part of the phosphor wheel and reflected back to the color separation element, and then reflected back to the light concentrating element by the color separation element. The second part of the first color light beam is reflected back to the dichroic element by the reflective part of the phosphor wheel, and the second part of the first color light beam passes through the dichroic element and is transmitted to at least one reflective element, and is reflected by at least one reflective element. Passes through the dichroic element again to pass to the light concentrating element. The invention further provides a projection device with the lighting system. The above lighting system can simplify the complex light path, thereby reducing the overall volume.

Description

technical field [0001] The present invention relates to a light source module, and in particular to an illumination system and a projection device using the illumination system. Background technique [0002] A digital light processing (DLP) projection device includes an illumination system, a digital micro-mirror device (DMD) and a projection lens, wherein the illumination system is used to provide an illumination beam, and the digital micro-mirror device is used to The illuminating light beam is converted into an image light beam, and the projection lens is used to project the image light beam on the screen to form an image picture on the screen. The ultra-high pressure mercury lamp is a light source commonly used in early lighting systems, which can provide white light as an illumination beam. With the development of lighting technology, light sources with energy-saving advantages such as light-emitting diode light sources and laser light sources (laser diodes) are gradua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2066
Inventor 杨德生翁铭璁
Owner CORETRONIC