Spectrophotometer

Details Spectrophotometer Spectrophotometer

1982-03-29

1984-06-19

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrophotometer

356325, G01J 342

Patent

active

044550979

ABSTRACT:
A spectrophotometer which can be used selectively as a single-beam and a double-beam type and comprises a light source, a monochromator, a chopper mirror for causing the monochromatic light beam from the monochromator to alternately advance along a first and a second path, in which a reference and a sample cell are disposed respectively, a beam combiner for causing the alternate beams to advance along a common path leading to a photoelectric detector, and a mirror movable for selective positioning in and out of the monochromatic light beam between the monochromator and the chopper mirror.

REFERENCES:
patent: 3606547 (1971-09-01), Iwahashi
patent: 3927944 (1975-12-01), Iwahashi et al.

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