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Manipulates the photodiode array spectrum detector and the photodiode array spectrum detector the manner
Manipulates the photodiode array spectrum detector and the photodiode array spectrum detector the manner
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机译：操纵光电二极管阵列光谱检测器和光电二极管阵列光谱检测器的方式
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摘要
PURPOSE: To conduct spectrodetection with high sensitivity without increasing the cost of a signal processing circuit and complexity by using a charge amplifier and reading out a photosensing element at higher frequency than that generating output signal. CONSTITUTION: A spectrodetector contains a light source 1 of deuterium lamp for example and radiates a beam 2 of multicolored radiation. the beam 2 is focused on a specimen cell 5 with a lens system 3. The beam coming out of the specimen cell 5 and passing an inlet slit 7 impinges on a holographic diffraction grating 10 which scatters the light according to the various wave lengths in the beam. The ray spatially separated in the diffraction grating 10 impinges on a photodiode array 11. Then the electric signal from the photodiode is read out periodically in a read-out circuit 20 and the signal indicates the intensity of each ray impinging on the photodiode. The electric signal read 20 out of the photodiode array 11 is processed by a signal processing circuit 21. By this, spectrodetection can be done without increasing the cost of the circuit 21 and its complexity.
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