Optical property measuring device

Details Optical property measuring device Optical property measuring device

1987-07-22

1989-03-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250226, 356448, 356432, G02F 101, G01J 350

Patent

active

048108723

ABSTRACT:
Light irradiated to a sample is detected by a detector in order to measure the optical properties of the sample. The image of a minute virtual light source for the light is focused in the neighborhood of the measuring face of the sample by a first optical system arranged between the light source and the sample. The light outgoing from the sample is incident to the detector by way of a second optical system arranged between the sample and the detector and having conjugate points in the neighborhood of the measuring face of the sample and of the light receiving point of the detector.

REFERENCES:
patent: 2146904 (1939-02-01), McFarlane et al.
patent: 3746869 (1973-07-01), Lindstedt et al.
patent: 4040750 (1977-08-01), Zwiener
patent: 4555181 (1985-11-01), Klumper et al.
patent: 4589776 (1986-05-01), Carver et al.
patent: 4591271 (1986-05-01), Byers
patent: 4672196 (1987-06-01), Canino

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