Back-lit button assembly

Details Back-lit button assembly Back-lit button assembly

1994-07-29

1995-12-19

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912185, 264132, 264400, B23K 2600, B29C 4514

Patent

active

054770246

ABSTRACT:
A method of providing a clear image on a component including the steps of providing a transparent member having first and second opposite sides, providing a layer of opaque material on the second side of the transparent member and ablating away a predetermined pattern of the opaque layer by directing a laser beam at portions of the first side of the transparent member corresponding to the predetermined pattern, the laser beam passing through the transparent member to contact and ablate the opaque layer and provide a clear image through the transparent member corresponding to the predetermined pattern.

REFERENCES:
patent: 3919559 (1975-11-01), Stevens
patent: 3922440 (1975-11-01), Wegwerth et al.
patent: 4764410 (1988-08-01), Grzywinski
patent: 4766023 (1988-08-01), Lu
patent: 4851061 (1989-07-01), Sorkoram
patent: 5005949 (1991-04-01), Egawa et al.
patent: 5098633 (1992-03-01), Hausler
patent: 5142415 (1992-08-01), Koehnle
patent: 5147716 (1992-09-01), Bellus

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