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物质，能量和信息是人类社会的重要资源，当今世界已经步入信息化社会，光子是信息的主要载体，因此21世纪也是光子时代。近几年来，在《光及有关电磁辐射的量和单位》国际标准（ISO／DIS31—6，1990）和我国国家标准（GB3102，6，1993）中新引入了光子数，光子通量，光子强度，光子亮度，光子出射度，光子照度和曝光子量等七个光子量，本文讨论光子量计量及光子计量测试仪器。
Material, energy and information are important resources of human society. Nowadays the world has entered the information society. Photon is the main carrier of information. Therefore, the 21st century is also a photon era. In recent years, the photon number, photon flux, photon (photon flux) have been newly introduced in the International Standard for Light and Relevant Electromagnetic Radiation (ISO / DIS 31-6, 1990) and China’s national standard (GB 3102, 6, Intensity, photon brightness, photon emission, photon illumination and exposure to the amount of seven photon quantities, this article discusses photon and photon photometric measurement instruments.