Screen Color Characteristics Of Non-contact Test Technology Research

Recently the technology of color measurement has been advancing to a new stage .The topic of this dissertation is the technology and instrument of color measurement in big screen display. The technology is remote distance and no osculant measurement,and the measure instrument can be real time control by PC.The system adopts an optical system equipped Pritchard hole reflector. It can provide efficiently optical channel,and it can aim at the distant object and measure brightness and color precise. At the same time,the field of vision can be changed. The good designed optical system radically eliminates systematic errors of distant effect in optics. The system used spectrophotometric method can measure object optical character. And then,with CIE standard observer spectral tristimulus value function the color property of the object can be calculated. Finally,obtained upper precision. Distributed measure range and good designed signal processing assure order of accuracy and good linearity. The section of hardware is designed for performing y real time control sampling system and communicate with PC. The PC software can control section of hardware and deposite data and fast deal with complicated data.This dissertation consists of eight chapters:The main tasks are arranged the in thesis;Based on the theory of colorimetry,several methods to measure color are introduced;Ascertained color measuring system;Discussed hardware of circuitry and software design in the color measuring system;Calibrated the color measuring system;PC software designed;Summarized the work...