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Optical projection device

A projection device and optical technology, which is applied to optics, projection devices, optical components, etc., can solve the problems of difficulty in quickly dissipating heat, deformation of optical devices, and structural light deformation failure of optical projection devices, and achieves simple structure, improved quality, The effect of avoiding distortion of the optics

Inactive Publication Date: 2019-12-20
TRIPLE WIN TECHSHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the VCSEL has a high temperature when it is powered on, and it is difficult to dissipate the heat quickly when it is uploaded to the optical device. The heat generated by the VCSEL can easily cause the deformation of the optical device, and eventually lead to the failure of the structured light emitted by the optical projection device.

Method used

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Examples

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Effect test

no. 1 example

[0059] see Figures 1 to 4 , is an optical projection device 100 provided by the present invention. The optical projection device 100 includes a circuit board 10 , a light source 20 electrically connected to the circuit board 10 , and an optical device 30 provided on the circuit board 10 .

[0060]The circuit board 10 is a rigid board, a flexible board or a rigid-flex board. In this embodiment, the circuit board 10 is a ceramic board. The bottom of the circuit board 10 is also provided with a reinforcing plate 110 . The size of the circuit board 10 is smaller than that of the reinforcing board 110 , so that two longer side edges of the reinforcing board 110 are exposed outside the circuit board 10 . The reinforcing plate 110 is made of metal, which can strengthen the heat dissipation effect of the optical projection device 100 . A portion of the reinforcing board 110 exposed outside the edge of the circuit board 10 is provided with a thermally conductive silicone 112 .

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no. 2 example

[0083] see Figure 5 , the bearing seat 41 included in the optical projection device provided in the second embodiment. The structure of the bearing seat 41 provided in this embodiment is basically the same as that of the bearing seat 31 provided in the first embodiment, the difference lies in:

[0084] In this embodiment, the width of the metal heat dissipation layer 335 formed on one of the side surfaces 315 of the lower housing part 310 of the bearing seat 41 is narrowed to form a conductive circuit 345 extending to the top end 313 of the upper housing part. The metal heat dissipation layer 350 on the side surface is used for heat conduction. Since the metal heat dissipation layer 335 is made of metal conductive material, the conductive circuit 345 connected to the metal heat dissipation layer 350 can be used for conduction. Of course, it can be understood that according to actual needs, another conductive line 345 can be formed on the other side surface opposite to the si...

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Abstract

The invention relates to an optical projection device, comprising a circuit board, a light source which is electrically connected with and arranged on the circuit board and is used for emitting a light beam as well as an optical device arranged on the circuit board, the optical device is used for receiving the light beam, the optical device comprises a bearing seat covering the light source, a heat dissipation region and a conduction region are defined on the surface of the bearing seat, the heat dissipation region comprises a metal heat dissipation layer which is embedded in and arranged on the surface of the bearing seat, heat produced when the light source works can be transferred to the outside of the bearing seat by virtue of the metal heat dissipation layer, the conduction region comprises a conducting circuit which is embedded in and arranged on the surface of the bearing seat, the conducting circuit is electrically conducted with the circuit board, and the metal heat dissipation layer and the conducting circuit are made from the same material.

Description

technical field [0001] The invention relates to an optical projection device used in a depth camera. Background technique [0002] The depth camera can obtain the depth information of the target to realize 3D scanning, scene modeling, and gesture interaction. Compared with the currently widely used RGB camera, the depth camera is gradually being valued by all walks of life. For example, the combination of depth camera, TV, computer, etc. can realize somatosensory games to achieve the effect of two-in-one game and fitness. In addition, Google's tango project is committed to bringing depth cameras to mobile devices, such as tablets and mobile phones, so as to bring a completely subversive experience. For example, it can realize a very real AR game experience, and can use it for indoor map creation and navigation. and other functions. [0003] The core component of the depth camera is the optical projection device. With the continuous expansion of applications, the optical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/42
CPCG02B27/4205G02B7/028H01L33/64H01L33/58H01S5/02257H01S5/02253H01S5/02325G03B21/16G03B21/2033H05K1/0274G02B27/0955G02B27/30
Inventor 陈信文李静伟丁盛杰宋建超
Owner TRIPLE WIN TECHSHENZHEN CO LTD
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