Spotlight with double lens for generating rectangular light spots

Abstract

The invention discloses a spotlight with double lens for generating rectangular light spots, and the spotlight comprises a light source. The spotlight is characterized in that a cylindrical light-transmitting lens used for converging the scattered rays emitted by the light source, and enabling the light spots formed by irradiating the rays emitted by the light source on an irradiated body to be rectangular light spots is arranged on the front part of the light source; and a convex lens used for further converging the rays is arranged at the front end of the cylindrical light-transmitting lens. A light-shielding barrel is arranged between the cylindrical light-transmitting lens and the convex lens. The convex lens is fixed on the top of the light-shielding barrel, and the cylindrical light-transmitting lens is fixed on the bottom of the light-shielding barrel. By virtue of the refraction principle and the reflection principle of rays, the scattered rays are collected in a rectangular range by using the lenses, so as to generate the rectangular light spots. Compared with the prior art, the spotlight disclosed by the invention has the advantages of being wide in application range, centralized in light convergence, high in brightness, and less in light loss. In addition, the spotlight is convenient in production, low in cost, and suitable for wide popularization.

Description

technical field [0001] The invention relates to a light source for a line-scanning camera, in particular to a spotlight with a rectangular spot produced by double lenses. Background technique [0002] As we all know, line scan cameras need to rely on light sources to provide illumination when shooting linear images. High brightness, high efficiency, high uniformity, and flicker-free rectangular light are the requirements of line scan cameras for light sources. The spot area formed by ordinary light sources is large, and the light is not concentrated. However, the present invention uses the principle of light refraction to concentrate the light emitted by the light source to form a rectangular spot, improve the brightness, rationally use the light source, meet the requirements of the line scan camera for the light source, and greatly promote the promotion and application of the line scan camera. [0003] At present, there are some light source devices on the market to solve ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some light source devices on the market to solve the above-mentioned problems, but they are all applied in specific scenarios and cannot adapt to the changing on-site environment

Many of them need to customize special lighting devices and corresponding equipment with manufacturers according to specific environments, which is time-consuming and laborious. Therefore, a simple and universal strip spotlight that can produce rectangular spots needs to be developed urgently.

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