Method and apparatus for aligning an invisible beam particularly

Optics: measuring and testing – Angle measuring or angular axial alignment

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Details

350172, 356252, G02B 2304, G02B 2714, G02B 2314

Patent

active

040159060

ABSTRACT:
An alignment device for aligning a beam of radiant energy, particularly a laser beam, with respect to a target comprises a reflector in the path of the beam, the reflector having an aperture of a diameter smaller than that of the beam so that the aperture permits the center portion of the beam to pass therethrough to the target, while the outer marginal fringe of the beam is intercepted and reflected to a sighting member, the device further including an optical system transposing the image of the sighting member onto the field of the target, thereby enabling real-time alignment of the beam and providing a better defined beam and while permitting the alignment to be effected before directing the beam to the target.

REFERENCES:
patent: 3582215 (1971-06-01), Cornillault
patent: 3689159 (1972-09-01), Taniguchi et al.
patent: 3752587 (1973-08-01), Myers et al.
patent: 3813170 (1974-05-01), Sears
patent: 3827806 (1974-08-01), Skagerlund
Bloom, A. L. "Application of CW Lasers To Surveying Precision, Optical Testing, and Alignment", Annals of the New York Academy of Sciences, vol. 122, Art. 2, pp. 658-660.

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