04079230 is referenced by 33 patents and cites 12 patents.

The laser light emitted from a laser generator is cast on two prisms which have the same angle of deflection and are supported rotatably by support members so as to be rotated about the optical axis of the laser light in the opposite directions at the same speed. The laser beam scanned through the rotations of the two prisms is focussed on a work piece by a convergence lens so that the work piece is linearly scanned for laser-working. Moreover, there are provided a pair of scanning sections, each comprising such a pair of prisms as described above, the scanning sections being so arranged that the directions of scanning the laser beam by the respective sections may be perpendicular to each other. The rotational speeds of the prisms of each scanning section is so controlled as to subject the spot of the laser beam to two-dimensional scanning for laser-working a work piece.

Title
Laser working apparatus
Application Number
5/627279
Publication Number
4079230
Application Date
October 30, 1975
Publication Date
March 14, 1978
Inventor
Tomoyoshi Mikoshiba
Chigasaki
JA
Jun ichi Nakabayashi
Yokohama
JA
Tateoki Miyauchi
Yokohama
JA
Agent
Craig & Antonelli
Assignee
Hitachi
JA
IPC
B23K 9/00
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