Filter indexing for spectrophotometer system

Details Filter indexing for spectrophotometer system Filter indexing for spectrophotometer system

1980-03-07

1982-08-03

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

356328, 356334, G01J 312, G01J 318

Patent

active

043425160

ABSTRACT:
A spectrophotometer system has an optical system for transmitting a beam from a source at select wavelengths onto a detector. A plurality of filters are positioned in a tray. A stepper mechanism indexes the tray along a path. A microcomputer controls the stepper mechanism and the optical system. The wavelength is successively changed over a range, the tray is indexed to move a select filter into the beam at a predetermined wavelength and the changing is discontinued during indexing.

REFERENCES:
patent: 3537797 (1970-11-01), Matthews
patent: 3822941 (1974-07-01), Roche et al.
"Computer-Controlled Programmable Monochromator System with Automated Wavelength and Background Correction," Spillman et al., Anal. Chemistry, vol. 48, No. 2, Feb. 1976, pp. 303-311.

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