Structured light emission module and three-dimensional imaging device
A structured light and module technology, applied in the field of 3D imaging, can solve problems such as DOE design and production difficulties, and achieve the effects of easy module integration, lower requirements, and improved tolerance capabilities
Pending Publication Date: 2022-05-27
ZHEJIANG CRYSTAL OPTECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Large-angle diffraction relies on DOE, but this requires DOE to have a fine sub-wavelength structure, which makes the design and fabrication of DOE very difficult
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.
[0030] Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings are not intended to limit the scope of the invention as claimed, but are merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary s...
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
Login to View More Abstract
The invention provides a structured light emitting module and a three-dimensional imaging device, and belongs to the technical field of three-dimensional imaging, the structured light emitting module comprises a collimating lens and a beam shaper which are sequentially arranged along a main optical axis, a light source comprises an incoherent dot matrix light source or an incoherent area light source, the numerical aperture of the collimating lens is larger than 0.5, and the numerical aperture of the beam shaper is larger than 0.5. And a pattern with superposed light beams is formed on the light emitting side of the light beam shaper. The light source and the collimating lens form skeleton spots, the collimating lens can collimate divergent beams which are obliquely incident at a large angle, and the beam shaper copies or homogenizes the skeleton spots so as to increase the density of the skeleton spots, achieve the effect close to an area light source and form a pattern with superposed beams. In this way, the effect of large-angle deflection light beams is formed by means of the collimating lens, the high limitation requirement for the light beam shaper does not need to be additionally put forward, the requirement for the light beam shaper is lowered, the tolerance capacity is improved, and module integration is easy.
Description
technical field [0001] The present invention relates to the technical field of three-dimensional imaging, in particular, to a structured light emission module and a three-dimensional imaging device. Background technique [0002] In the current 3D imaging technology, 3D structured light for depth measurement and object recognition is widely used. The realization method of this kind of light is to use the Vcsel (Vertical-cavity surface-emitting laser, vertical cavity surface emitting laser) light source, through the collimating lens, the output becomes multiple beams of plane light with different directions, and then cooperate with DOE (Diffractive Optical Elements, diffractive optics) components), and finally form a dot matrix projector, project tens of thousands of points onto the object, and restore the three-dimensional information of the object by identifying these points. [0003] In the current method, the Vcsel lattice is replicated to increase its density to form a s...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B27/30G01B11/25
CPCG02B27/0927G02B27/0961G02B27/0944G02B27/30G01B11/2518
Inventor 陈柯有伍未名刘风雷
Owner ZHEJIANG CRYSTAL OPTECH