| United States Patent | 5,798,498 |
| Zair | Aug. 25, 1998 |
Abstract
A method and apparatus applying a laser beam to a working surface, by displacing the laser beam to trace a plurality of circular scans over the working surface; and continuously varying the diameters of the circular scans at a rate to produce a substantially homogenous distribution of the laser energy over the working surface.
| Inventors: | Zair; Eliezer (Bnei Brak, IL). |
| Assignee: | Laser Industries, Ltd. (IL). |
| Appl. No.: | 715,745 |
| Filed: | Sept. 19, 1996 |
| Division of Ser No. 358,386, Dec. 19, 1994, Pat. No. 5,582,752. |
| Dec. 17, 1993 [IL] | 108059 |
| Intl. Cl. : | B23K 10/00 |
| Current U.S. Cl.: | 219/121.83; 219/121.79; 219/121.85; 356/153; 356/399; 606/11 |
| Field of Search: | 219/121.85, 121.83, 121.79, 121.8, 121.62; 356/138, 139, 399, 153; 606/18, 2, 13, 9-12, 16 |
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| 4,266,548 | May, 1981 | Davi | |
| 4,665,913 | May, 1987 | L'Esperance, Jr. | |
| 4,668,088 | May, 1987 | Quinque et al. | 356/138 |
| 4,733,660 | Mar., 1988 | Itzkan | |
| 4,780,590 | Oct., 1988 | Griner et al. | |
| 5,110,209 | May, 1992 | Elshoud et al. | 356/138 |
| 5,163,936 | Nov., 1992 | Black et al. | 606/18 |
| 5,315,111 | May, 1994 | Burns et al. | 250/235 |
| 5,364,391 | Nov., 1994 | Konwitz | |
| 5,411,502 | May, 1995 | Zair | |
| 5,474,549 | Dec., 1995 | Ortiz et al. | |
| 5,484,980 | Jan., 1996 | Pratt et al. |
Primary Examiner: Paschall; Mark H.
Attorney, Agent or Firm: Cobrin Gittes & Samuel