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Parallel light source

A parallel light source and light source technology, applied in the field of visual inspection and image measurement, can solve problems such as poor parallel light effect

Pending Publication Date: 2019-03-01
珠海博明软件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a parallel light source, which solves the problem of poor parallel light effect produced by existing parallel light sources

Method used

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Embodiment Construction

[0019] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0020] An embodiment of the present invention provides a parallel light source, such as figure 1 As shown, it includes a light source 1 and a light collector 2 covered on the light source 1. The light source 1 can be an LED light source, which has the advantages of long life and high stability. The light collector 2 can be in the shape of a cover. Internal. The inner wall of the light collector 2 forms a reflective surface, which can be made of high-reflectivity materials, and a light outlet 20 is formed at one end of the light collector 2 , and the light 100 is collected under the reflection of the reflective surface and emitted from the light outlet 20 . The parallel light source also includes a shading plate 3 and a lens group located outside the light collector 2 and arranged sequentially along the optical path. The lens grou...

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Abstract

The invention discloses a parallel light source. The parallel light source comprises a light source body and a light collector, wherein the light collector is arranged over the light source body in acovering manner; the inner wall of the light collector is provided with a reflecting surface used for reflecting light; the parallel light source further comprises a light shielding plate and a lens unit which are positioned outside the light collector and are sequentially arranged along the route of a light path; the lens unit comprises bioconvex spherical lenses which are used for transforming non-parallel light into parallel light; the light shielding plate is fixedly provided with a light guide tube; the light guide tube and the route of the light path are coaxially arranged; the axis of the light shielding plate is provided with a through hole which penetrates through the light shielding plate and communicates with the inlet of the light guide tube; light enters the light guide tube through the inlet only; the reflecting surface is overlapped with the border of a preset spheroid; and the spheroid takes the light source body and the inlet of the light guide tube as the focuses. Theparallel light source disclosed by the invention can effectively improve the uniformity of the light source; and meanwhile the balsaming lenses can eliminate optical aberration of the light source and can keep the edge of a view field to be clear and sharp.

Description

technical field [0001] The invention relates to the technical field of visual detection and image measurement, in particular to a parallel light source for visual detection and image measurement instruments. Background technique [0002] Parallel light, also known as directional light, is a group of parallel light rays without attenuation. In the field of visual inspection and image measuring instrument technology, parallel light source has its unique application method, so it is widely used. In the prior art, the parallel light source is made of a point light source plus a convex lens. The point light source is located at the focal point of the convex lens, and the parallel light is generated by using the refraction principle of the convex lens. This kind of parallel light does not have any processing measures, resulting in poor uniformity of the light source, difficult to remove aberrations, and the edge of the field of view is not clear and sharp. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V5/00F21V5/04F21V7/08F21V13/12F28F21/08F21V8/00F21Y115/10
CPCF21S8/00F21V5/007F21V5/04F21V7/08F21V13/12F28F21/084F28F21/085F21Y2115/10
Inventor 何贵明赵春艳姚平
Owner 珠海博明软件有限公司
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