| 摘要 |
PURPOSE:To obtain a photodetector which can obtain the light quantity required for emission spectrometry. CONSTITUTION:The title photodetector 1 which detects light from a sample moving in a capillary 2 based on a potential difference by applying a voltage across a buffer solution contained in the capillary 2 from both ends of the capillary 2 is provided with a photodetector group composed of a plurality of photodetectors 3 arranged in the sample plane along the length direction of the capillary 2 and light condensing member 5 which is made of such a light transmitting substance that the joining surfaces 8 formed on the photodetector 3 side in corresponding to the photodetectors 3 are formed as light transmitting surfaces and the internal surface on the opposite side of the surfaces 8 is formed as a light reflecting surface and is equipped with a plurality of blocking layers 7 which intersect the axis of the capillary 2 and are arranged at prescribed intervals and the capillary 2 is passed through the member 5. It is desirable to form the surface of the member 5 opposite to the light transmitting surfaces in a semicylindrical curved surface. It is possible to form the layers 7 to have light reflecting surfaces toward the inside of the member 5. In addition, it is desirable to pass the capillary 2 through the member 5 at a prescribed distance from the joining surfaces 8. |
