Device capable of producing contrast observation object and chromatic aberration observation object

Abstract

The invention relates to a device capable of producing a contrast observation object and a chromatic aberration observation object and belongs to the technical field of optical precision measurement. The device comprises a first uniform surface light source, a second uniform surface light source, a first base color matching system, a second base color matching system, a first large integrating sphere, a second large integrating sphere, a target board, a cube beam splitter prism, a first reticle and a second reticle, wherein lights emitted by one uniform surface light source irradiate the base color matching systems, the lights with different colors and different brightness are produced by means of the base color matching systems, the lights emitted by the base color matching systems irradiate the large integrating spheres for color mixture to form the uniform surface light sources with specific colors and specific brightness, by means of the other same light path, the other uniform surface light source with specific colors and specific brightness are formed, and two path surface light sources pass by a follow-up light path to produce the contrast observation object and the chromatic aberration observation object. According to the device capable of producing the contrast observation object and the chromatic aberration observation object, the measurement range is wide, the structure is simple, and the device an be used for producing continuously-variable contrast observation objects and chromatic aberration observation objects for the measurement of visual threshold values.

Description

technical field [0001] The invention relates to a device for generating contrast and color difference observation objects, which belongs to the technical field of optical precision measurement. technical background [0002] More than 95% of the external information that people feel comes from vision, so the quality of visual characteristics is directly related to human production, life and work. Clinically, the application of visual diagnostic equipment to early detection of visual diseases and early intervention and treatment is the key to reducing visual disability. With the improvement of material living standards, people pay more and more attention to visual health, and the corresponding detection, diagnosis and testing technologies are also continuously developed, and many new visual diagnostic equipments have emerged. [0003] Although my country has carried out relevant metrological research on visual diagnostic equipment, established a national metrological benchmar...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of human visual threshold measurement, and propose a device that produces two observation targets, and the generated contrast and color difference observation targets can be used for human visual threshold measurement

Images