A device for generating laser point light source clusters
A technology of laser point light source and generating device, which is applied in the field of laser, can solve the problems of difficult realization and high cost, and achieve the effect of easy realization, adjustable aperture size and wide selection
Active Publication Date: 2016-04-13
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology
There are many ways to generate point light sources, but most of them start from the structure of the light source itself and strive to prepare a device that emits light close to the ideal point light source. Although this method can essentially solve the problem of point light source generation, it is expensive and difficult to produce. accomplish
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Embodiment
[0026] This embodiment provides a device for generating a cluster of laser point light sources, as shown in FIG. 1 .
[0027] This device comprises the laser source 11 that is used to produce laser beam 21, is provided with the diaphragm 12 of through hole and and the filter paper 13 of evenly distributed micropore, after the laser beam 21 that laser source 11 sends passes through the restriction of the through hole of diaphragm 12 The incident laser beam 22 is reduced to a smaller diameter, and the incident laser beam 22 is vertically incident on the surface of the filter paper 13 and forms a point divergent laser beam 23 after being diffracted by the micropores in the filter paper 13 .
[0028] In the present embodiment, the laser source 11 is selected as a laser pointer, and its output laser is red light with a wavelength of 650-660nm, and the beam diameter at the output end is 4mm; The diameter is 0.5mm; the filter paper 13 is a slow quantitative filter paper with a distan...
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The invention relates to a laser point light source cluster generating device. The laser point light source cluster generating device comprises a laser source (11), a diaphragm (12) and filter paper (13), wherein the laser source (11) is used for generating a laser beam (21), the diaphragm (12) is located at one side of the laser and is provided with a through hole, the filter paper (13) is located at one side of the diaphragm (12), and micropores are uniformly distributed in the filter paper (13); the laser beam (21) generated by the laser source (11) passes through the through hole of the diaphragm (12) and then is restricted to be an incident laser beam (22) having diameter the same as that of the through hole, and the laser beam (22) vertically enters the surface of the filter paper (13) and diffract, so that a laser point light source cluster with size the same as the beam diameter of the incident laser beam (22) is generated, and a point divergence laser (23) is formed. The laser point light source cluster generating device is simple in structure, wide in selection of laser sources, easy to realize and suitable for serving as a point divergence light source in a light path calibration process.
Description
technical field [0001] The invention belongs to the technical field of lasers, and relates to a device for generating a point divergent light source in the laser light path calibration process. Background technique [0002] In optical path alignment technology, an ideal point light source is a key component to achieve precise optical path alignment. There are many ways to generate point light sources, but most of them start from the structure of the light source itself and strive to prepare a device that emits light close to the ideal point light source. Although this method can essentially solve the problem of point light source generation, it is expensive and difficult to produce. accomplish. In fact, in the red light, infrared light, and terahertz wave bands with longer wavelengths, the accuracy requirements for optical path calibration are much lower than those in short wavelength bands, and the requirements for point light sources are relatively low. [0003] In view ...
Claims
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IPC IPC(8): G02B27/09
Inventor 谭智勇曹俊诚张戎
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI