Diode array spectrophotometer

Details Diode array spectrophotometer Diode array spectrophotometer

1996-01-23

1997-03-25

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01J 302, G01J 318

Patent

active

056150105

ABSTRACT:
A diode array spectrophotometer has an entrance slit apparatus, a diffraction grating, a diode array and a casing to define the relative positions of these elements. The casing and the holder for accepting the diffraction grating are made of a ceramic whose coefficient of thermal expansion is adapted to that of the diode array. The grating holder has a cylindrical outer surface and is situated within a conic-frustum-shaped opening of the casing. Between the grating holder and the conic-frustum-shaped opening, there are a plurality of filler elements which are made of ceramic or glass.

REFERENCES:
patent: 5396487 (1995-03-01), Abe et al.

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