Optical arrangement in spectrophotometers

Details Optical arrangement in spectrophotometers Optical arrangement in spectrophotometers

1977-05-16

1979-08-21

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrophotometer

356432, G01J 342

Patent

active

041651812

ABSTRACT:
In a spectrophotometer having a cuvette, a photoelectric detector having a photosensitive surface, a light source arranged for passing a light beam through the cuvette onto the photosensitive surface, an imaging optical system arranged between the cuvette and the photosensitive surface or a rear image thereof being located in a focal plane of the optical system outside the image plane of the light source, whereby the light beam impinges on the photosensitive surface as a relatively large light spot of substantially uniform illumination and, as a result, the location and size of the light spot is not adversely affected by parallel offset, and the demands as to accuracy and alignment of the cuvette are reduced.

REFERENCES:
patent: 2043589 (1936-06-01), Muller
patent: 3022704 (1962-02-01), Cary
patent: 3240110 (1966-03-01), Ohlin
patent: 4006900 (1977-02-01), Munk

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