Product Introduction: Jingyi Optoelectronics' universal fluorescence quantum efficiency integrating sphere has three openings, namely the light entrance, sample entrance, and light exit entrance. The light entrance port is equipped with a collimating mirror to collimate the excitation light source onto the sample. The light exit port can be connected to a detector fiber spectrometer through an optical fiber, and the size of the detection port can also be customized according to requirements. The sample holder is located at the sample port, and the sample is placed inside the integrating sphere behind the sample holder. It can be used for measuring samples such as liquids, powders, and films.