CCD photosensor and its application to a spectrophotometer

Details CCD photosensor and its application to a spectrophotometer CCD photosensor and its application to a spectrophotometer

1989-07-28

1991-08-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502033, 356320, G01J 350

Patent

active

050435710

ABSTRACT:
A spectrophotometer is composed of a spectrofilter, a plurality of bandpass filters for cutting unnecessary transmission bands, and a CCD photosensor. The photosensor is composed of two sets of photosensors having different sensitivity ranges that overlap at some portion to increase the dynamic range of the device. The handling amount of charges is increased at every portion of the CCD photosensor in order to reduce the influence of the shot noise. Further, various technologies are used to enhance the accuracy and stability of the spectrophoto-measurement.

REFERENCES:
patent: 4174528 (1979-11-01), White
patent: 4263512 (1981-04-01), Sagusa et al.
patent: 4389661 (1983-07-01), Yamada
patent: 4435897 (1984-03-01), Kuroda et al.
patent: 4544271 (1985-10-01), Yamamoto
patent: 4687329 (1987-08-01), Schultz
patent: 4800591 (1989-01-01), Sato

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