Optical system for measuring retro-reflecting coefficient

Abstract

The invention relates to an optical system for measuring a retro-reflecting coefficient. The optical system comprises an illumination light source, a spectroscope, a reflector, an achromatic objective, a glass filter and a photodiode receiver, wherein the spectroscope is arranged below the illumination light source; the spectroscope, the achromatic objective, the glass filter and the photodiode receiver are arranged on the left and right sides of the illumination light source and the spectroscope respectively; the illumination light source comprises a warm white LED (Light-Emitting Diode) lamp, as well as a light source microporous diaphragm, a soft lens and a scattered light processing device, which are sequentially arranged below the warm white LED lamp; the spectroscope is a transmission and reflection type spectroscope, and is obliquely arranged below the scattered light processing device; the reflector is a reflex reflector, and comprises a large reflector and a small reflector, which are arranged in a pair. The optical system has the characteristics of small size, high accuracy, convenience in operation, variable incident angle and observation angle and the like.

Description

[0001] technical field [0002] The invention relates to the technical field of retroreflection detection, in particular to an optical system for measuring retroreflection. [0003] Background technique [0004] At present, the traffic construction is developing rapidly, and the traffic signs on the road are also becoming more and more perfect. Traffic signs play an important role in traffic safety, but the devices for detecting the retroreflection coefficient of these reflective signs are far behind the actual needs. Most of the existing retroreflection coefficient detection devices are indoor desktops, which have the disadvantages of bulky, cumbersome testing process, low testing accuracy, etc., and the incident angle and observation angle are fixed, and the focal length is a long focal length. [0005] Contents of the invention [0006] The object of the present invention is to provide an optical system for measuring the retroreflection coefficient, which has the cha...

AI Technical Summary

Problems solved by technology

Traffic signs play an important role in traffic safety, but the devices for detecting the retroreflection coefficient of these reflective signs are far behind the actual needs

Most of the existing retroreflection coefficient detection devices are indoor desktops, which have the disadvantages of bulky, cumbersome testing process, and low testing accuracy, and their incident angle and observation angle are fixed, and their focal length is a long focal length.

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