Structured light projection module group, depth camera and method for manufacturing structured light projection module group

A technology of structured light projection and module, applied in optics, optical components, components of TV systems, etc., can solve problems such as reducing the uniformity of speckle patterns, and achieve the effect of high-precision three-dimensional measurement and high irrelevance

Inactive Publication Date: 2018-03-02
SHENZHEN ORBBEC CO LTD
View PDF4 Cites 49 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to improve the calculation accuracy, that is, to ensure uniform spot density distribution, the arrangement of VCSEL array chips and the randomness of sub-spot patterns will reduce the uniformity of the final projected spot pattern

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Structured light projection module group, depth camera and method for manufacturing structured light projection module group
  • Structured light projection module group, depth camera and method for manufacturing structured light projection module group
  • Structured light projection module group, depth camera and method for manufacturing structured light projection module group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Embodiments of the present application will be described in detail below. It should be emphasized that the following description is exemplary only and not intended to limit the scope of the application and its application.

[0042] figure 1It is a schematic diagram of a depth camera based on structured light technology. The depth camera includes a structured light projection module 11 and an acquisition module 12. The structured light projection module is used to project structured light patterns into the spatial projection area A, and the acquisition module is used to acquire structured light images on objects in its acquisition area B , generally the projection area A is not lower than the collection area B, so as to ensure that the objects in the collection area corresponding to the collection module can be covered by the structured light pattern. In addition, the depth camera also includes a processor for receiving the structured light image collected by the colle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a structured light projection module group, a depth camera and a method for manufacturing the structured light projection module group. The structured light projection module group comprises a light source which comprises multiple child light sources which are arranged into a two-dimensional array and used for transmitting two-dimensional patterned beams corresponding to the two-dimensional array; a lens which receives and converges the two-dimensional patterned beams; and a diffractive optical element which receives the two-dimensional patterned beams which are emergent through convergence of the lens and projects speckle patterned beams, wherein the speckle patterns include multiple image patterns corresponding to the two-dimensional patterns, and the relationshipbetween the adjacent image patterns of multiple image patterns at least includes two relationship of overlapping, adjoining and spacing. The structured light projection module group can project the speckle patterns having high degree of non-correlation.

Description

technical field [0001] The present application relates to a structured light projection module, a depth camera and a method for manufacturing the structured light projection module. Background technique [0002] 3D imaging technology is the core of the new generation of human-computer interaction technology. With the rigid demand of mobile terminal equipment for 3D imaging technology, depth cameras will be widely used in mobile terminal equipment, which also makes depth cameras move towards low power consumption. , high performance, and small volume. The structured light projection module is the core device in the depth camera based on structured light technology, and its main components are light source and diffractive optical element (DOE). Diffractive Optical Elements (DOE) have the function of modulating light beams, such as splitting incident light beams to generate outgoing light beams with specific structured patterns. A typical solution is to use a laser emitter to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/2013G03B21/2033G03B21/20G01C3/08G02B27/48H04N23/56H04N13/254G02B27/4233
Inventor 黄源浩王兆民闫敏许星
Owner SHENZHEN ORBBEC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap