Product Introduction Based on high-precision fine calibration and spectral matching technology, the uniform light source product (surface/sphere) can achieve free matching and control of color temperature, illumination (brightness), and spectrum. The adjustable extended light source is equipped with a spectral measurement system and an absolute radiance self calibration device, making the radiometric calibration light source a standard integrating sphere light source with real-time calibration ability for output spectral radiance. It can simulate different scenarios as needed, serve fields such as healthcare and lighting, and also meet the needs of precise calibration of radiation values in scientific research, higher education institutions, and other fields. The product can be used as a radiation calibration/testing equipment for optoelectronic imaging systems or testing systems, which can simulate the radiance of scenery at any solar altitude angle and provide a uniform radiation source with known radiation values for relative/absolute radiation calibration of optoelectronic instruments. The main applications include relative/absolute radiation calibration and testing of optoelectronic imaging systems, optoelectronic testing systems, CCD/CMOS cameras, mobile phone cameras, CCD/CMOS imaging devices, etc. The spherical uniform light source benefits from its spherical structure and high anti reflective diffuse coating inside. The emitted light source has a surface uniformity and angle uniformity of better than 99%, which can meet the high-end professional level uniform light source requirements. If you require uniformity of over 96%, you can also choose a small-sized, lightweight, and flexible surface light source that meets your needs for a large effective light output aperture. The product has superior performance and flexible design. The outgoing light source has advantages such as high uniformity, wide dynamic range, and ultra-high brightness. It can achieve independent/coordinated control of emission parameters such as contrast, color temperature, and spectrum. In addition to conventional systems such as real-time monitoring of spectral radiance, it also has one click operation functions such as absolute spectral radiance self calibration and intelligent input automatic control of radiance.