Heat source detecting device, human eye protection system, laser projector and control method thereof

Abstract

An embodiment of the invention discloses a heat source detecting device, a human eye protection system, a laser projector and a control method thereof. According to the heat source detecting device, the human eye protection system, the laser projector and the control method thereof, a vibrating mirror can make an infrared light beam irradiated by a heat source move on the surface of an infrared sensor through vibration, thus, the infrared sensor can detect the heat source continuously as long as the heat source is in a detection region, and the detection result is more precise; the heat sourcedetecting device is applied to the human eye protection system of the laser projector and can adjust the brightness of a projection light source more precisely, when the heat source is detected, thesituation indicates that someone enters the detection region, the heat source detecting device can protect human eyes continuously as long as the person is in the detection region whether the person is stationary or moving, and the brightness of the light source is adjusted to be below a preset value and is not recovered until the person leaves the detection region, thereby avoiding damage to thehuman eyes, and having better protection effect.

Description

technical field [0001] The invention relates to the technical field of laser projection, in particular to a heat source detection device, an eye protection system, a laser projector and a control method thereof. Background technique [0002] Ultra-short-throw laser projectors (or TVs) can project images of more than 100 inches in a short distance, and have the widest adaptability in different environments such as home entertainment, business, education, and community services, and can create brand new applications mode, bringing consumers a brand-new viewing experience. At present, ultra-short-throw laser TV / projectors have a great price advantage compared with large-size flat-panel TVs, and are suitable for promotion in the home market. Moreover, the laser light source used in the ultra-short-throw laser projector does not need to be replaced, and the heavy metal pollution that may be caused by the light bulb light source is completely eliminated, which eliminates worries ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a heat source detection device, a human eye protection system, a laser projector and a control method thereof, which are used to solve the problem that the human eye protection system in the existing laser projector cannot activate the human eye when the person is still. problem of protection

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