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Ultrathin parallel light source based on one-dimensional diffraction

A parallel light source, ultra-thin technology, used in diffraction gratings, electric light sources, optics, etc., can solve the problems of long axial distance of the optical axis, small and enlarged light source area, small axial distance and easy assembly. , light weight effect

Active Publication Date: 2020-02-11
平行现实(杭州)科技有限公司
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Problems solved by technology

Most of the parallel light sources on the market today adopt optical structures such as double telecentricity to manufacture parallel light sources. Such structures have a long axial distance of the optical axis in terms of volume, such as figure 1 As shown, it is inconvenient to carry and assemble
And there is a problem that the area of ​​the light source is not large, because when the area of ​​the light source becomes larger, the diameter, radius of curvature, and axial distance of the assembly of the convex lens will also increase accordingly, so that the production difficulty, production cost, and installation cost of the large-sized lens will increase. sharp increase

Method used

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  • Ultrathin parallel light source based on one-dimensional diffraction
  • Ultrathin parallel light source based on one-dimensional diffraction
  • Ultrathin parallel light source based on one-dimensional diffraction

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

[0026] Such as figure 2 As shown, the ultra-thin parallel light source based on one-dimensional diffraction of the present invention includes a luminescent light source 1, a periodic slit stop 2 and a first periodic one-dimensional FZP3 arranged in parallel in turn, wherein the periodic slit stop 2 One-to-one correspondence with the periods of the first periodic one-dimensional FZP3, that is, their number of periods and the length of each period are the same, and the center line of each slit of the periodic slit diaphragm 2 is the same as that of each period of the one-dimensional FZP The plane formed by ...

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Abstract

The invention discloses an ultrathin parallel light source based on one-dimensional diffraction. The parallel light source comprises a luminous light source, a periodic slit diaphragm and a first periodic one-dimensional Fresnel zone phase correction plane which are sequentially arranged in parallel. Compared with an existing parallel light source with double telecentric structures, the ultrathinparallel light source based on the one-dimensional diffraction is short in axial distance, light in weight and low in cost, the large-area parallel light source is easy to assemble, and the ultrathinparallel light source can be used for one-dimensional high-precision measurement of large-size objects.

Description

technical field [0001] The invention relates to a parallel light source, in particular to an ultra-thin parallel light source based on one-dimensional diffraction. Background technique [0002] Parallel light sources can be used in many occasions, such as industrial microstructure inspection and so on. Most of the parallel light sources on the market today adopt optical structures such as double telecentricity to manufacture parallel light sources. Such structures have a longer axial distance of the optical axis in terms of volume, such as figure 1 As shown, it is inconvenient to carry and assemble. And there is a problem that the area of ​​the light source is not large, because when the area of ​​the light source becomes larger, the diameter, radius of curvature, and axial distance of the assembly of the convex lens will also increase accordingly, so that the production difficulty, production cost, and installation cost of the large-sized lens will all increase. Steep inc...

Claims

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Application Information

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IPC IPC(8): F21S2/00G02B5/18
CPCF21S2/00G02B5/18G02B5/1876G02B5/188
Inventor 鲍鹏飞
Owner 平行现实(杭州)科技有限公司
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