Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer
Patent
1995-10-18
1999-10-19
Hantis, K. P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrophotometer
G01J 306
Patent
active
059698128
ABSTRACT:
A spectrophotometer measures optical absorption of light by a sample received in a sample cell. An array of optical elements disperses the light over a spectral pattern, and a fiber optic beam splitter splits light at a selected spectral band into a reference component and a test component. Detectors measure the intensity of the reference component and the test component after the test component passes through the sample. The fiber optic beam splitter includes a plurality of strands arranged with first ends terminating in a common circular area. Opposite ends of peripheral strands are collected into a first set that transmits the test component while the remaining strands for a second set that transmits the reference component. Preferably, there is a single, central, large strand surrounded by smaller strands. Two emitters are provided for light of two different types, such as visible and UV. The optical array forms a collimated beam having an inner core of one type of light and an outer shell of the other. Specially constructed optical elements then reflect and refract the collimated beam. A motor drives a mirror to scan the beam across an optical slit positioned in front of the beam splitter to select a desired spectral band.
REFERENCES:
patent: 3391600 (1968-07-01), Blumentritt
patent: 3437411 (1969-04-01), Rudomanski et al.
patent: 3580082 (1971-05-01), Strack
patent: 3614242 (1971-10-01), Hrdina
patent: 3885879 (1975-05-01), Louder et al.
patent: 4014612 (1977-03-01), Atwood et al.
patent: 4125329 (1978-11-01), French et al.
patent: 4245908 (1981-01-01), Gawlick
patent: 4396288 (1983-08-01), Helphrey
patent: 4545680 (1985-10-01), Smith, Jr.
patent: 4566792 (1986-01-01), Suzuki
patent: 5042893 (1991-08-01), Ong
patent: 5184193 (1993-02-01), LeFebre
patent: 5212537 (1993-05-01), Birang et al.
Design of an LC detector: Part One, by D. Carver et al, Reprinted from American Laboratory, May 1987.
Hantis K. P.
Henson Michael R.
Martin Timothy J.
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