Compact spectrometer device

Details Compact spectrometer device Compact spectrometer device

1998-08-28

2000-05-02

Hantis, K. P.

Optics: measuring and testing

By shade or color

With color transmitting filter

G01N 2125

Patent

active

060579250

ABSTRACT:
A color measuring sensor assembly includes an optical filter such as a linear variable filter, and an optical detector array positioned directly opposite from the optical filter a predetermined distance. A plurality of lenses, such as gradient index rods or microlens arrays, are disposed between the optical filter and the detector array such that light beams propagating through the lenses from the optical filter to the detector array project an upright, noninverted image of the optical filter onto a photosensitive surface of the detector array. The color measuring sensor assembly can be incorporated with other standard components into a spectrometer device such as a portable calorimeter having a compact and rugged construction suitable for use in the field.

REFERENCES:
patent: 4054389 (1977-10-01), Owen
patent: 4318123 (1982-03-01), Knop
patent: 5017798 (1991-05-01), Murakami et al.
patent: 5166755 (1992-11-01), Gat
patent: 5218473 (1993-06-01), Seddon et al.
patent: 5604594 (1997-02-01), Juffinger
patent: 5872655 (1999-02-01), Seddon et al.
Seddon et al., Linear Variable Filters Match Photodiode Arrays, Laser Focus World, Technology Guide: Optical Coatings and Filters, Sep. 1991.

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