System and method for determining anisotropy of light-transmitti

Details System and method for determining anisotropy of light-transmitti System and method for determining anisotropy of light-transmitti

1986-12-23

1989-07-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 35, 356368, G02F 101, G01B 1118

Patent

active

048496235

ABSTRACT:
A system and method for determining the anisotropy of a sample of a light transmitting sheet is disclosed. The surface of the sample is irradiated with a polarized light which is directed through the sample to an analyzer element. The polarizing plane of the analyzer is matched to, or maintained in a predetermined angular relation to, the polarizing plane of the polarized light. The sample is rotated relative to the analyzer element so that the optical anisotropy can be determined from the relationship between the rotation angle and the output of measured light.

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Boyarskaya et al, "Investigation of the Hardness Anisotropy of Crystals Using Polarized Light", Institute of Appl. Physics, vol. 36, No. 8, 8/70, pp. 989-992.
Professor Coker's Photo-Elastic Apparatus, Adam Higler Ltd., 5/31 pp. 1-31.

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