Electric heating – Microwave heating – Tunnel furnace
Patent
1983-10-13
1986-01-28
Corbin, John K.
Electric heating
Microwave heating
Tunnel furnace
219121L, 350174, 356153, G02B 508, G02B 2714, B23K 900, G01B 1126
Patent
active
045667659
ABSTRACT:
A light source apparatus comprises one laser oscillator, at least one other laser oscillator, a light converter for converting a laser beam emitted from the other laser oscillator into a ring-shaped laser beam, and a reflecting mirror for passing a laser light beam emitted from the one laser oscillator through the center hole of the mirror and for reflecting the ring-shaped laser beam from the other laser oscillator via the light converter, the laser beam reflected by the reflecting mirror being coaxial with and being overlapped with the laser beam transmitted through the mirror from the one laser oscillator.
REFERENCES:
patent: 3588440 (1971-06-01), Morse
patent: 3892488 (1975-07-01), Edmonds
patent: 4289378 (1981-09-01), Remy et al.
Hongo Mikio
Miyauchi Tateoki
Mizukoshi Katsuro
Shimase Akira
Yamaguchi Hiroshi
Corbin John K.
Hitachi , Ltd.
Lewis David
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