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Projector

A technology for projectors and optical components, applied in the field of projectors, can solve the problems of reducing the overall quality and visual effect of spliced ​​images, discontinuity at seams, and poor brightness uniformity, so as to improve the problem of uneven brightness and reduce the amount of light. , The effect of improving the overall brightness uniformity

Active Publication Date: 2021-12-24
YOUNG OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The image projected by the projector often has poor brightness uniformity, such as the problem that the central area is brighter and the surrounding area is darker
like figure 1 As shown, when multiple projectors are used to splicing the TV video wall image 100, if the brightness uniformity is not good, the problem of discontinuity at the seam will be highlighted, and the overall quality and visual effect of the spliced ​​image will be reduced.

Method used

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Embodiment Construction

[0013] see figure 2 , figure 2 A schematic diagram of a projector according to an embodiment of the present invention is depicted. In the projector 1, according to the transmission path of the bright light beam, the light source 10, the uniform light element 12, the optical element 16, the optical element 20, the optical element 22 and the light valve 30 arranged on the transmission path of the illumination light beam I are sequentially included. The optical element 16 is disposed between the light valve 30 and the light homogenizing element 12 .

[0014] In this specific embodiment, the light source 10 can be an element that can provide the illuminating light beam I, such as an existing thermoelectric light source, fluorescent lamp, light emitting diode or laser light emitting diode light emitting element. In this example, the light source 10 is a packaged white light emitting diode module with phosphor powder.

[0015] In the present invention, "uniform light element" 1...

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Abstract

A projector includes a light source, a uniform light element, a light valve, a first optical element and a second optical element that can transmit light. The light source can output the illumination light beam, and the uniform light element, the light valve, the first optical element and the second optical element are arranged on the transmission path of the illumination light beam. The first optical element and the second optical element are arranged between the light valve and the uniform light element. The second optical element is arranged on the surface of the first optical element and has a diopter. The second optical element is provided with a curved surface, and the area of ​​the curved surface of the second optical element is smaller than the area of ​​the illumination beam at the position of the second optical element.

Description

technical field [0001] The present invention relates to a projector, and more particularly to a projector with preferred image uniformity. Background technique [0002] The image projected by the projector often has poor brightness uniformity, such as the problem that the central area is brighter and the surrounding area is darker. Such as figure 1 As shown, when multiple projectors are used to splicing the video wall image 100 , if the brightness uniformity is not good, the problem of discontinuity at the seam will be highlighted, and the overall quality and visual effect of the spliced ​​image will be reduced. Contents of the invention [0003] The invention provides a projector, which includes a light source, a light uniform element, a light valve, a first optical element and a light-transmittable second optical element. The light source can output the illumination light beam, and the uniform light element, the light valve, the first optical element and the second opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/20
Inventor 林祐震胡雅文云麒锥
Owner YOUNG OPTICS