Quantum efficiency test system based on dynamic scanning of a rotating mirror for a linear array camera
A quantum efficiency test system based on dynamic scanning of a rotating mirror has been created to measure various linear array image sensors (referred to as linear array cameras or cameras). The system has been used to measure the quantum efficiency of CMOS cameras, and the uncertainty of the meas...
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| Veröffentlicht in: | Journal of optics (New Delhi) 2023-09, Vol.52 (3), p.1022-1028 |
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| container_end_page | 1028 |
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| container_issue | 3 |
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| container_title | Journal of optics (New Delhi) |
| container_volume | 52 |
| creator | Li, Junlin Tang, Yanfu Yang, Yongqiang Li, Hongyu Lan, Taiji |
| description | A quantum efficiency test system based on dynamic scanning of a rotating mirror has been created to measure various linear array image sensors (referred to as linear array cameras or cameras). The system has been used to measure the quantum efficiency of CMOS cameras, and the uncertainty of the measurement results was evaluated. Firstly, a system consisting of a monochromatic source, a collimated optical system, a rotating mirror, and a standard detector was found. A periodic dynamic spot was generated by reflecting from the rotating mirror and was scanned by cameras. Then, the spot’s energy is captured and measured by switching the position between the camera and the standard detector. Finally, using the formula of the dynamic scanning method, the quantum efficiency of the system can be obtained. Test results show that the dynamic scanning method is feasible with high repeatability for measuring quantum efficiency. By evaluating the uncertainty of the measurement results, the system can give a quantum efficiency accuracy of 2.68%. This design provides an innovative method different from the conventional method of using a monochromator coupled with an integrating sphere, which has low accuracy. In addition, this technique can be conducted on various types of cameras. |
| doi_str_mv | 10.1007/s12596-022-00941-w |
| format | Article |
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The system has been used to measure the quantum efficiency of CMOS cameras, and the uncertainty of the measurement results was evaluated. Firstly, a system consisting of a monochromatic source, a collimated optical system, a rotating mirror, and a standard detector was found. A periodic dynamic spot was generated by reflecting from the rotating mirror and was scanned by cameras. Then, the spot’s energy is captured and measured by switching the position between the camera and the standard detector. Finally, using the formula of the dynamic scanning method, the quantum efficiency of the system can be obtained. Test results show that the dynamic scanning method is feasible with high repeatability for measuring quantum efficiency. By evaluating the uncertainty of the measurement results, the system can give a quantum efficiency accuracy of 2.68%. This design provides an innovative method different from the conventional method of using a monochromator coupled with an integrating sphere, which has low accuracy. 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The system has been used to measure the quantum efficiency of CMOS cameras, and the uncertainty of the measurement results was evaluated. Firstly, a system consisting of a monochromatic source, a collimated optical system, a rotating mirror, and a standard detector was found. A periodic dynamic spot was generated by reflecting from the rotating mirror and was scanned by cameras. Then, the spot’s energy is captured and measured by switching the position between the camera and the standard detector. Finally, using the formula of the dynamic scanning method, the quantum efficiency of the system can be obtained. Test results show that the dynamic scanning method is feasible with high repeatability for measuring quantum efficiency. By evaluating the uncertainty of the measurement results, the system can give a quantum efficiency accuracy of 2.68%. 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| ispartof | Journal of optics (New Delhi), 2023-09, Vol.52 (3), p.1022-1028 |
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| subjects | Cameras Efficiency Integrating spheres Lasers Linear arrays Optical Devices Optics Photonics Physics Physics and Astronomy Position measurement Quantum efficiency Research Article Rotating mirrors Sensor arrays Test systems Uncertainty |
| title | Quantum efficiency test system based on dynamic scanning of a rotating mirror for a linear array camera |
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