Optical spectral filter and linear positioner therefor

Details Optical spectral filter and linear positioner therefor Optical spectral filter and linear positioner therefor

1996-10-25

1998-08-11

Henry, Jon W.

Optical: systems and elements

Absorption filter

Filters in optical parallel

359350, 359889, 25033901, 25033907, 356419, G02B 522

Patent

active

057935459

ABSTRACT:
A multi-wavelength optical filter for a portabe gas analyzer includes a filter assembly having a first opening and multiple additional openings. The first opening has a linearly variable filter disposed therein, while the additional openings have discrete filters disposed therein. The filters are linearly aligned, such that filter selection is facilitated by using the filter assembly with a linear positioning mechanism.

REFERENCES:
patent: 5448070 (1995-09-01), Day et al.
patent: 5508525 (1996-04-01), Day et al.
patent: 5519219 (1996-05-01), Alexay et al.
Laboratory Application Data for MIRAN IR Analyzers, The Foxboro Company, 1991.

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