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Projector

A projector and monochromatic light technology, which is applied in the field of projectors, can solve the problems of increasing the volume of projectors and achieve the effect of improving light utilization

Inactive Publication Date: 2011-08-03
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing LED light sources for projectors generally include red LED light sources, green LED light sources and blue LED light sources. At the same time, in order to improve the brightness of the image projected by the projector, each single-color light source includes a plurality of LEDs, thus forming a three-color LED light source. A light source array, so that the volume of the projector is greatly increased

Method used

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , is a projector 1 provided in the first embodiment of the present invention, which includes a monochromatic light source array 10, a mirror array 20, a condenser lens group 30, a spectroscopic device 40, a convex lens 50, and a light conversion device sequentially arranged along the optical path 60. Relay lens group 70, mirror 80, light guide 90, color wheel 100, TIR prism system 110, digital micromirror device 120 and lens 130

[0014] The monochromatic light source array 10 is used to emit first monochromatic light. In this embodiment, the monochromatic light source array 10 is a 3*7 LED array, forming a parallel light source with a large light-emitting surface. The first monochromatic light is blue light. It can be understood that the monochromatic light source array 10 is also a laser diode (Laser Diode, LD) array.

[0015] The in...

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Abstract

The invention relates to a projector which comprises a monochromatic light source array, a light splitting device, a light conversion device and a light guide pipe. The monochromatic light source array is used for sending out first monochromatic light. The light splitting device is arranged on a light path of the first monochromatic light and used for transmitting partial first monochromatic light and reflecting partial first monochromatic light. The light conversion device is arranged on a transmission light path of the light splitting device and used for converting the first monochromatic light into second monochromatic light and third monochromatic light and reflecting the second monochromatic light and the third monochromatic light to the light splitting device. The light splitting device is also used for reflecting the second monochromatic light and the third monochromatic light. The light guide pipe is arranged on a reflecting light path of the light splitting device and used for mixing the first monochromatic light, the second monochromatic light and the third monochromatic light into uniform white light. The projector can obtain a white light source by utilizing the monochromatic light source array and the light conversion device and also can be matched with the corresponding light path design to be miniaturized while the utilization rate of the monochromatic light source array is improved.

Description

technical field [0001] The present invention relates to a projector. Background technique [0002] The projector may use a halogen lamp or a semiconductor light emitting diode (Light Emitting Diodes, LED) as a light source. However, the life of the halogen lamp is relatively short, generally about 1,000 hours, and generally only 2-3% of the energy of the halogen lamp is converted into light energy, and the rest of the energy is converted into heat. Compared with the halogen lamp, the energy utilization rate of the LED is relatively high, so it is widely used in the light source of the projector. Existing LED light sources for projectors generally include red LED light sources, green LED light sources and blue LED light sources. At the same time, in order to improve the brightness of the image projected by the projector, each single-color light source includes a plurality of LEDs, thus forming a three-color LED light source. A light source array, so that the size of the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B27/10
CPCF21V7/22G03B21/28F21V7/28
Inventor 林明德叶文彬王俊勋
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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