Structured light projection module based on VCSEL array light sources

A technology of structured light projection and array light source, which is applied in the fields of optics and electronics, and can solve the problem of difficulty in obtaining high-precision depth images at the same time.

Active Publication Date: 2017-12-01
SHENZHEN ORBBEC CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In order to solve the problem that it is difficult to acquire high-precision and high-frame-rate depth images at the ...

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  • Structured light projection module based on VCSEL array light sources
  • Structured light projection module based on VCSEL array light sources
  • Structured light projection module based on VCSEL array light sources

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Embodiment Construction

[0031] The present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings, so as to better understand the present invention, but the following embodiments do not limit the scope of the present invention. In addition, it should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and only the components related to the present invention are shown in the drawings rather than the number of components, Shape and size drawing, the shape, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the layout of the components may also be more complicated.

[0032] figure 1 The side schematic diagram of the depth camera based on structured light is shown. The main components of the depth camera 101 include a structured light projection module 104 , an acquisition module 105 , a circuit bo...

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Abstract

The present invention provides a structured light projection module based on VCSEL array light sources, comprising: a VCSEL array light source including a semiconductor substrate and at least two sets of VCSEL sub-arrays arranged on the semiconductor substrate, wherein the VCSEL sub-arrays consist of VCSEL light sources; and a diffractive optical component comprising: at least two diffractive optical component sub-units corresponding to the VCSEL sub-arrays respectively and used for multiplying the light beams emitted by the light sources of the VCSEL sub-arrays by a certain multiple and then projecting them outward. According to the invention, sparse and dense speckle patterns can be projected into the space to form a variety of structured light patterns and through the matching algorithm featuring the large window prior to small window, both high-precision and high-frame rate depth images can be obtained so that the depth camera using the module can be applied to a variety of applications.

Description

technical field [0001] The invention relates to the technical fields of optics and electronics, in particular to a structured light projection module based on a VCSEL array light source. Background technique [0002] 3D imaging, especially the 3D imaging technology applied in the consumer field, will continue to impact the traditional 2D imaging technology. In addition to the 2D imaging capability of the target object, the 3D imaging technology can also obtain the depth information of the target object. According to the depth information, it can further Realize 3D scanning, scene modeling, gesture interaction and other functions. Depth cameras, especially structured light depth cameras or TOF (time-of-flight) depth cameras, are currently hardware devices commonly used for 3D imaging. [0003] The core component of the depth camera is the laser projection module. According to the different types of depth cameras, the structure and function of the laser projection module are ...

Claims

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Application Information

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IPC IPC(8): G06T7/586G06T7/593G06T17/00
CPCG06T17/00H01S5/04256H01S5/423H01S5/005G01B11/2513G02B19/0014G02B19/0057G02B3/0006G02B27/48G02B27/0944G02B27/0961H04N23/56H04N13/254G02B27/30G02B27/4205
Inventor 肖振中许星
Owner SHENZHEN ORBBEC CO LTD
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