The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
Jan. 24, 1986
Edward V Locke, Rockport, MA (US);
Laser Corporation of America, Lowell, MA (US);
Abstract
Apparatus for simultaneously soldering all the leads of a multi-lead SMP device to the pads of a substrate utilizes a gas laser having a cylindrical resonant cavity terminated at one end by a mirror that reflects energy back into the laser cavity. A plurality of beamlets corresponding to the number of leads of the SMP device are coupled out of the laser through holes in the mirror. All the beamlets have substantially the same amount of radiant energy. Each beamlet enters the near end of a different one of a corresponding number of elongate flexible optical wave guides extending away from the mirror toward an imaging lens. The far end of each optical wave guide is arranged so that its position can be moved. That enables the far ends of the wave guides to be arranged in different patterns to match the various patterns of leads of different SMP devices. The beamlets emerging from the far ends of the optical wave guides are focussed by the imaging lens on the joints to be soldered. The radiant energy of those beamlets is turned into heat and causes the solder at the joints to reflow so that all the soldered connections are made at the same time.