Device for measuring light absorption characteristics of a thin

Details Device for measuring light absorption characteristics of a thin Device for measuring light absorption characteristics of a thin

1989-01-11

1990-08-28

Larochi, Eugene R.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356432, 422186, G02B 2714, G01N 2100, B01J 110

Patent

active

049520270

ABSTRACT:
A film forming device includes an optical device which has a light source, and a first optical system for projecting light beams split by a light splitting device. The light splitting device and the optical system steadily maintain the intensity center of the light beam projected onto a detecting surface of a light detector at an invariable position without positional fluctuation independently of fluctuation of an emitting angle to a thin film of the light source.

REFERENCES:
patent: 4129358 (1978-12-01), Wei
patent: 4597630 (1986-06-01), Brandstetter et al.
patent: 4710030 (1987-12-01), Tauc et al.
patent: 4790664 (1988-12-01), Saito et al.
"Photothermal Deflection Spectroscopy and Detection", Applied Optics, Apr. 15, 1981, vol. 20, No. 8, pp. 1333-1344.
"Second Sound Spectroscopy: A New Method for Studying Optical Absortion in Solids", Physics Letters, Mar. 22, 1976, vol. 56A, No. 3, pp. 223-224.

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