CH602256A5CH1453876ACH1453876ACH602256A5CH 602256 A5CH602256 A5CH 602256A5CH 1453876 ACH1453876 ACH 1453876ACH 1453876 ACH1453876 ACH 1453876ACH 602256 A5CH602256 A5CH 602256A5
Authority
CH
Switzerland
Application number
CH1453876A
Inventor
Michael Bowen Davies
Norman Leslie Pratt
Original Assignee
Boc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boc LtdfiledCriticalBoc Ltd
Publication of CH602256A5publicationCriticalpatent/CH602256A5/xx
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K26/00—Working by laser beam, e.g. welding, cutting or boring
B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
B23K26/03—Observing, e.g. monitoring, the workpiece
B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N7/00—Television systems
H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast