Appliance for converting reflectance measuring instrument into a

Details Appliance for converting reflectance measuring instrument into a Appliance for converting reflectance measuring instrument into a

1989-01-09

1990-04-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 961, 356244, 356432, 356445, H01J 516

Patent

active

049163094

ABSTRACT:
An appliance for converting an optical reflectance measuring instrument into a transmittance measuring instrument is shaped to fit in the aperture of a probe of the reflectance measuring instrument. When used as a reflectance measuring instrument, reflectance samples are positioned over the aperture. The appliance has a fiber optic cable which receives light from the probe and carries it out through the aperture and redirects the light back toward the aperture through a position designed to receive a sample, the transmittance of which is to be measured. In the optical instrument, the light received by the probe is carried by fiber optics to a spectrometer.

REFERENCES:
patent: 2547543 (1951-04-01), Strong
patent: 3936189 (1976-02-01), DeRemigis
patent: 3998551 (1976-12-01), Suga
patent: 4082458 (1978-04-01), Fukui et al.
patent: 4120582 (1978-10-01), De Vries et al.
patent: 4564290 (1986-01-01), Bell et al.
patent: 4602160 (1986-07-01), Mactaggart
patent: 4750835 (1988-06-01), McMurtry
patent: 4808812 (1989-02-01), Tanaka et al.

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