Device for measuring light, which comes from particles or from biological cells of microscopic size

摘要

Device for measuring the light emitted from particles or cells (12) of microscopic size, with a passage cell (8), through which the particles or luminous cells (12) are conducted, in which the cell step (8) presents a window transparent to light, and with a photo detector (2), which detects the light emitted from the particles or luminous cells (12), and with an optical element, which conducts the light that comes out from the window (3) towards the photo detector (2), in which the optical element is configured as a cylinder (4, 9) with a cylindrical reflection surface, in which the passage cuvette (8) is arranged outside the cylinder ( 4, 9), such that the cylinder (4, 9) is arranged between the passage cuvette (8) and the photo detector (2), in which the passage cuvette (8) is arranged with its longitudinal axis perpendicular to the longitudinal axis of the cylinder (4, 9), and in which the device is configured to measure the light fluo Resident that comes from particles or cells (12) of microscopic size, in which between the passage cuvette (8) and the photo detector (2) is a fluorescent light filter (6) that lets in fluorescent light, the device it is free of lenses, and the cylinder (4, 9) has a large numerical aperture, where the diameter of the cylindrical reflection surface is at least 50 times greater than the minimum distance between the light emitting particle and the inlet opening of the cylinder light (4, 9), where the cylindrical reflection surface is formed by a cylinder liner (4, 9).