Apparatus and method for projecting discrete light spots
A light spot and incident light beam technology, applied in the field of optics, can solve the problems of high design requirements, increased design difficulty, and inconvenience
Active Publication Date: 2017-05-31
SHANGHAI TUYANG INFORMATION TECH CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] However, with this solution, the design requirements of the front and rear diffraction elements are relatively high and difficult
[0011] On the one hand, the design requirements of the pre-diffraction elements that perform diffraction in the form of a two-dimensional array are relatively high and difficult, and it is not convenient to further increase the number of rows and columns
For example, if you want to increase the number of rows and / or columns to 7 or 9, the design difficulty will increase dramatically
[0012] On the other hand, to splice m×n small rectangular discrete spot patterns in the row and column directions, the design requirements for the front and rear diffractive elements are relatively high and 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
[0034] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0035] figure 2 A schematic side view of an optical device according to the invention is schematically shown.
[0036] The light source 1 can generally be a collimated laser generator for generating a light beam (collimated laser beam) 100 .
[0037] The light beam 100 is incident on the means 2 for projecting discrete spots of light.
[0038] The device 2 includes an optical beam splitter 10 and an optical diffuser 20 . Both the optica...
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 discloses a device and method for projecting disperse light spots. The device comprises an optical beam splitter and an optical diffusion sheet, wherein the optical beam splitter is designed to split an incident beam into N sub-light-beams basically the same in energy in the first direction, and the N is an odd number; the optical diffusion sheet is designed to diffuse the N sub-light-beams into N strip-shaped light beams, and when the N strip-shaped light beams are projected to a plane perpendicular to the optical axis of the optical diffusion sheet, N strip-shaped disperse light spot patterns are formed on the plane; in addition, the optical beam splitter and the optical diffusion sheet are designed to joint the N strip-shaped disperse light spot patterns in the first direction, and therefore a large disperse light spot pattern is formed. As the optical beam splitter only conducts light splitting in one direction, and the N strip-shaped light beams diffused by the optical diffusion sheet only need to be jointed in one direction, and the large disperse light spot pattern can be obtained through elements with the relatively-simpler design.
Description
technical field [0001] The present invention relates to the field of optics, and in particular to devices and methods for projecting discrete light spots. Background technique [0002] In fields such as 3D optical measurement, discrete light spots need to be projected into the measurement space in order to facilitate measurement. [0003] For example, by projecting discrete light spots onto objects in the shooting area, by shooting the light spots on the objects and processing the images of the light spots, a three-dimensional image of the object can be constructed. [0004] In this way, on the one hand, it is necessary to spread from a beam of usually very thin diameter (usually a collimated laser beam) into a large-format discrete spot pattern, and on the other hand, the energy of each spot should be low enough so as not to cause harm to people in the shooting area. eye damage. [0005] A readily conceivable way to generate such a large format discrete spot pattern from ...
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 Patents(China)
IPC IPC(8): G02B27/10G02B27/42
CPCG02B27/106G02B27/4205
Inventor 王敏捷梁雨时
Owner SHANGHAI TUYANG INFORMATION TECH CO LTD