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System and method for adjusting light rays of projector

A technology for adjusting the system and adjustment method, which is applied to the components, optics, cameras, etc. of the TV system, which can solve problems such as damage to eyesight, and achieve the effect of avoiding damage to people's eyesight by light

Inactive Publication Date: 2012-03-14
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

Usually, when using a projector to make a presentation, occasionally someone will pass in front of the projection screen. At this time, if the projector light is too strong, people will feel uncomfortable looking directly at the lens, which will damage their eyesight.

Method used

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  • System and method for adjusting light rays of projector
  • System and method for adjusting light rays of projector
  • System and method for adjusting light rays of projector

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] like figure 1 Shown is the application environment diagram of the preferred embodiment of the projector of the present invention. The projector 1 includes a projector main body 10 and a projector light adjusting system 20 . When the projector 1 is working normally, it projects images into the projection range 300 of the screen 30, such as Figure 4 shown. In this preferred embodiment, the projector 1 is a digital light processing (Digital Light Processing, DLP) projector.

[0019] The projector main body 10 includes a light source 110 , a light transfer mirror 120 , a camera 130 , a digital micro-mirror display (Digital Micro-mirror Display, DMD) chip 140 and a projection lens 150 .

[0020] The light source 110 is used to generate light, and project the generated light to the light transfer mirror 120 located in front of the light source 110 . The light source 110 may be a light emitting diode (Light Emitting Diode, LED), a laser diode, an organic EL element and an...

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PUM

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Abstract

The invention provides a system and a method for adjusting light rays of a projector. The method comprises the following steps: sending a control command to a video camera so that the video camera can immediately capture an image of an object between the projector and a screen, and obtaining coordinates of pixel points in the image of the object within a projection range; judging whether a shape of a person exists in the captured image of the object; if yes, transforming the coordinates of the pixel points in the image of the object within the projection range into the coordinates of corresponding pixel points on a DMD (digital micro-mirror device) chip; and adjusting an angle of a small reflector corresponding to the coordinates on the DMD chip of the pixel points for forming the image of the object so that light received by the small reflector does not pass through a projection lens. By adopting the method, when the person passes through the front of the projection screen, light in the area through which the person passes is automatically off so as to prevent damage of the light of the projector on eyesight of the person.

Description

technical field [0001] The invention relates to a projector light adjusting system and method. Background technique [0002] Projectors (also known as projectors) are relatively commonly used equipment in daily work. Usually, when using a projector to make a presentation, occasionally someone will pass in front of the projection screen. At this time, if the projector light is too strong, people will feel uncomfortable looking directly at the lens, which will damage their eyesight. Contents of the invention [0003] In view of the above, it is necessary to provide a projector light adjustment system, which can automatically turn off the lights in the passing area when a person passes in front of the projection screen, so as to prevent the projector light from hurting people's eyesight. [0004] In view of the above, it is also necessary to provide a projector light adjustment method, which can automatically turn off the lights in the passing area when a person passes in fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B17/54H04N5/74
CPCG03B17/54H04N9/312H04N9/3182H04N9/3194G03B21/008
Inventor 王柏昌
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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