Laser profiling of lens edge

Details Laser profiling of lens edge Laser profiling of lens edge

1992-07-28

1994-07-05

Albritton, C. L.

Electric heating

Metal heating

By arc

21912175, B23K 2600

Patent

active

053269560

ABSTRACT:
A method for forming a curved edge on a lens comprising the steps of providing an annular laser beam and irradiating a first peripheral region of the lens with the laser beam to remove a layer of lens material from the first peripheral region through ablative photodecomposition. Next, a second peripheral region of the lens is irradiated with the laser beam to remove a layer of lens material from the second peripheral region.

REFERENCES:
patent: 4307046 (1981-12-01), Neefe
patent: 4563565 (1986-01-01), Kampfer et al.
patent: 4642439 (1987-02-01), Miller et al.
patent: 5061840 (1991-10-01), Portney et al.
Applied Optics/vol. 17, No. 10/15 May 1978, pp. 1532 to 1536.
U.S. patent application Ser. No. 07/424,758, filed Oct. 1989 by Lunney.

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