Spectrometer provided with an optical shutter

Details Spectrometer provided with an optical shutter Spectrometer provided with an optical shutter

1995-08-23

1996-10-29

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356310, G01J 304, G01J 328

Patent

active

055701809

ABSTRACT:
A multi-slit type spectrometer includes a light diffracter which diffracts an incident light according to wavelengths; an optical shutter array member including a plurality of optical shutter elements arranged in correspondence with wavelength bands diffracted by the light diffracter, operable to transmit an incident ray according to an applied voltage, and made of PLZT. A zone of a given number of adjacent optical shutter elements is applied with a voltage corresponding to the wavelength bands of the rays incident upon the zone of adjacent optical shutter elements at a specified timing so that the rays respectively pass through or are reflected at the optical shutter elements. A signal processor receives the ray which has passed through or has been reflected at each optical shutter element and outputs an electrical signal according to the intensity of the received ray. A calculator calculates the intensity of the incident ray for each wavelength band in accordance with the electrical signal output from the signal processor and the specified applying timing.

REFERENCES:
patent: 4193691 (1980-03-01), Fjarlie
patent: 4615619 (1986-10-01), Fateley
patent: 4799795 (1989-01-01), Fateley
patent: 4818867 (1989-04-01), Hayashi et al.
patent: 4887104 (1989-12-01), Kitano et al.
patent: 5093676 (1992-03-01), Matsubara et al.
patent: 5162919 (1992-11-01), Ono

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