Marking of lenses

Details Marking of lenses Marking of lenses

1978-08-23

1980-08-26

Albritton, C. L.

Electric heating

Metal heating

By arc

269321W, B23K 2700

Patent

active

042197210

ABSTRACT:
A laser beam is used to provide rapid, clear and permanent marking of plastic lenses.

REFERENCES:
patent: 2133498 (1938-10-01), Dittmer
patent: 3527198 (1970-09-01), Takaoka
patent: 3549733 (1970-12-01), Caddell
patent: 3627858 (1971-12-01), Parts et al.
patent: 3663793 (1972-05-01), Petro et al.
patent: 3833786 (1974-09-01), Brucker
patent: 4032861 (1977-06-01), Rothrock
patent: 4039827 (1977-08-01), Zdrok et al.
patent: 4148548 (1979-04-01), Thompson
Obrig et al., Contact Lenses, 3rd edition, p. 330, 1957.

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