Structured light projection module

A technology of structured light projection and module, applied in the field of optics and electronics, can solve the problems of increasing cost and difficulty in research and development, and achieve the effect of overcoming the problem of high cost, reducing the cost of customization, and reducing the difficulty of research and development

Inactive Publication Date: 2017-07-28
SHENZHEN ORBBEC CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the need to consider the randomness of speckle structured light, the VCSEL light source used needs to be arranged irregularly,

Method used

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following descriptions are only exemplary and not intended to limit the scope of the present invention and its application.

[0021] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] The present invention proposes a structured light projection module and a depth camera based thereon. In the following description, the...

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Abstract

The invention provides a structured light projection module. The projection module comprises a VCSEL array, an irregular pattern generator, a lens and a structured light pattern generator. The VCSEL array comprises vertical cavity surface emitting lasers (VCSELs) which are arranged on a semiconductor substrate in a manner of two-dimensional regular patterns and is used for emitting first light beams with the two-dimensional regular patterns. The irregular pattern generator is used for receiving the first light beams and emitting second light beams with irregular patterns. The lens is used for receiving and gathering the second light beams. The structured light pattern generator is used for receiving the second light beams gathered through the lens and outwards emitting multiple second light beams which are partially mutually overlapped. Compared with the prior art, the regularly arranged VCSEL arrays are used as light sources, irregular patterns are generated through the irregular pattern generator and random structured light speckle patterns are projected, so difficulty level and cost for customization of the VCSEL arrays are reduced.

Description

technical field [0001] The invention relates to the fields of optics and electronics technology, in particular to a structured light projection module. Background technique [0002] The structured light 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 and computer can realize somatosensory games to achieve the two-in-one effect of game and fitness. Microsoft's KINECT and Obi Zhongguang's ASTRA are representatives of them. 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. [...

Claims

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Application Information

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IPC IPC(8): G03B21/20G03B21/14
CPCG03B21/2033G03B21/14G03B21/206
Inventor 许星
Owner SHENZHEN ORBBEC CO LTD
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