Illumination system

Details Illumination system Illumination system

1974-10-24

1976-12-28

Borchelt, Archie R.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250574, G01N 2126

Patent

active

039998550

ABSTRACT:
An improved system is described for providing approximately equalized illumination at all points between first and second opposite portions of a total internally reflecting cell. The system comprises in addition to the cell, a source of radiation of at least one selected wavelength, means for directing the radiation along a plurality of paths, and means for introducing the radiation in at least two of the paths into first and second opposite portions of the cell. Means can be provided for varying the penetration angle of the radiation into the cell.

REFERENCES:
patent: 3506360 (1970-04-01), Albert
patent: 3700330 (1972-10-01), Davis
patent: 3850525 (1974-11-01), Kaye

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