Electric heating – Metal heating – By arc
Patent
1991-10-22
1994-04-05
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
359559, B23K 2606
Patent
active
053007565
ABSTRACT:
A method for severing integrated-circuit conductive links by laser power employs a phase plate (26) to shape the laser beam's intensity profile. The profile thus imparted to the beam approximates the Fourier transform of the intensity profile desired on the workpiece (34). As a consequence, when a focusing lens (32) receives a beam having the profile imparted by the phase plate (26), it focuses that beam into a spot on the workpiece (34) having an intensity profile more desirable than the ordinary Gaussian laser-beam profile.
REFERENCES:
patent: 3705758 (1972-12-01), Haskal
patent: 4275288 (1981-06-01), Makosch et al.
patent: 4380694 (1983-04-01), Dyson
patent: 4478481 (1984-10-01), Fusek et al.
patent: 4518232 (1985-05-01), Dagenais
patent: 4547651 (1985-10-01), Maruyama
patent: 4705698 (1987-11-01), Van Dine
patent: 4720620 (1988-01-01), Arima
patent: 4765714 (1988-08-01), Horner et al.
patent: 4937424 (1990-06-01), Yasui et al.
patent: 4947413 (1990-08-01), Jewell et al.
patent: 5032002 (1991-07-01), Fonneland et al.
patent: 5034591 (1991-07-01), Fang
patent: 5048029 (1991-09-01), Skupsky et al.
patent: 5103073 (1992-04-01), Danilov et al.
patent: 5208437 (1993-05-01), Miyauchi et al.
W. W. Simmons et al., "Optical Beam Shaping Devices Using Polarization Effects", Applied Optics, Jul., 1974.
Y. Kawamura et al., "A Simple Optical Device for Generating Square Flat-Top Intensity Irradiation from a Gaussian Laser Beam", Optics Communications, Nov. 1, 1983.
Patrick W. Rhodes et al., "Refractive Optical Systems for Irradiance Redistribution of Collimated Radiation: Their Design and Analysis", Applied Optics, Oct. 15, 1980.
Dominique M. Dagenais et al., "Optical Beam Shaping of a High Power Laser for Uniform Target Illumination", Applied Optics, Mar. 1, 1985.
W. B. Veldkamp, "Laser Beam Profile Shaping with Interlaced Binary Diffraction Gratings", Applied Optics, Sep. 1, 1982.
Wilfrid B. Veldkamp et al., "Beam Profile Shaping for Laser Radars That Use Detector Arrays", Applied Optics, Jan. 15, 1982.
Evans Geoffrey S.
General Scanning Inc.
LandOfFree
Method for severing integrated-circuit connection paths by a pha 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 severing integrated-circuit connection paths by a pha, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for severing integrated-circuit connection paths by a pha will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-513262