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公开(公告)号：US3578866A
公开(公告)日：1971-05-18
申请号：US3578866D
申请日：1969-05-09
Applicant: CALIFORNIA INST OF TECHN
Inventor： KOHLER BRYAN E , DUBIN ALAN S
CPC classification number: G01J3/433
Abstract: An optical spectrometer is adapted to provide differential wavelength modulation of a spectral signal by vibrating a photosensitive cell in the focal plane of the spectrograph. A synchronous detector is employed to demodulate the output signal of the photosensitive cell, and thereby provide to a recording device a signal that is the derivative of the spectral signal.
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