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Laser projection equipment and control method thereof

A technology of laser projection and equipment, which is applied in the field of projection display, can solve problems such as projection lens damage, and achieve the effect of avoiding burns and ensuring reliability

Pending Publication Date: 2021-01-08
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present disclosure provide a laser projection device and a control method thereof, which can solve the problem of volatile matter generated by items placed at the light outlet of the laser projection device under the irradiation of the high-energy laser in the related art. Problems causing damage to the projection lens

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  • Laser projection equipment and control method thereof
  • Laser projection equipment and control method thereof
  • Laser projection equipment and control method thereof

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0038] figure 1 It is a schematic structural diagram of a laser projection device provided by an embodiment of the present disclosure. figure 2 It is a schematic structural diagram of another laser projection device provided by an embodiment of the present disclosure. Such as figure 1 and figure 2 As shown, the laser projection device may include a housing 00 , a control assembly 10 inside the housing 00 , a laser projection light source 20 , a light valve 30 , a projection lens 40 and an optical signal detector 50 . Among them, refer to figure 1 , the casing 00 has a first light outlet 001 .

[0039] Optionally, the laser projection light source 20 is used to emit an illumination beam. The laser projection light source 20 ...

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Abstract

The invention discloses laser projection equipment and a control method thereof, and belongs to the field of projection display. A control assembly in the laser projection equipment can determine thata target object exists at the first light outlet when detecting that the intensity value of the detection light signal reflected by the target object is relatively large, and the control assembly canreduce the brightness of the laser projection light source when the distance between the target object and the first light outlet is relatively short. Therefore, the situation that a projection lensis damaged due to volatile matter generated by the target object placed at a first light outlet under irradiation of high-energy laser is avoided, and the reliability of the projection lens is ensured. Meanwhile, the target object placed at the first light outlet is prevented from being burnt.

Description

technical field [0001] The present disclosure relates to the field of projection display, in particular to a laser projection device and a control method thereof. Background technique [0002] Currently, laser projection equipment may include a laser projection light source and a projection lens. The laser projection light source is used to emit laser beams. The projection lens is used to project the laser beam onto the projection screen through the light outlet of the laser projection device, so as to realize projection display. [0003] However, due to the high energy of the laser light emitted by the laser projection device, if the user puts items such as a remote control or a mouse at the light outlet of the laser projection device, the volatiles produced by the item under the irradiation of the high-energy laser will May cause damage to the projection lens. Contents of the invention [0004] Embodiments of the present disclosure provide a laser projection device an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/2033G03B21/2053G03B21/206
Inventor 陈许高力波
Owner QINGDAO HISENSE LASER DISPLAY CO LTD