Method for adjusting the focus and power of a trimming laser

Details Method for adjusting the focus and power of a trimming laser Method for adjusting the focus and power of a trimming laser

1979-05-14

1980-12-30

Williams, Howard S.

Metal treatment

Compositions

Heat treating

148 9R, 219121LM, B23K 2600

Patent

active

042421527

ABSTRACT:
A laser is used to cut slots into a film deposited on a substrate so that a clean kerf is produced without harming the substrate. The laser cut vaporizes the film material as the removal mechanism and some of the vaporized material will redeposit over the surface of the film adjacent to the kerf. When the redeposited material is illuminated and viewed obliquely a series of light fringes can be observed. The laser focus is adjusted until the fringe pattern is symmetrical about the kerf. The laser power is adjusted until the fringes extend to about three times the kerf width on both sides of the kerf. This provides a precision nonsubjective means for adjusting laser focus and power.

REFERENCES:
patent: 3837855 (1974-09-01), Rousseau et al.
patent: 4084988 (1978-04-01), Engel et al.

Affiliated with

Also associated with

Rating

Method for adjusting the focus and power of a trimming laser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for adjusting the focus and power of a trimming laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for adjusting the focus and power of a trimming laser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-5885