Soft and line laser

Details Soft and line laser Soft and line laser

1975-02-03

1977-05-24

Sikes, William L.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

G01N 2106

Patent

active

040252000

ABSTRACT:
An arrangement for using laser light in densitometers and spectrophotometers by using filters to cut down intensity and variable slits to regulate sensitivity. The arrangement also contemplates stretching the spot laser to a line laser by using a hollow transparent tubing in front of the laser and moving it to obtain various intensities. The line laser may be focused by a cylindrical lens at a fixed position, and the beam width may be adjusted by moving a cylindrical lens away or closer to the sample object. Furthermore, a slit before the sample and a slit after the sample will improve resolution by cutting off diffracted or aberated light.

REFERENCES:
patent: 2980802 (1961-04-01), Bracey et al.
patent: 3788748 (1974-01-01), Knight et al.
patent: 3843261 (1974-10-01), Pryor

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