Laser condensing optical system

Details Laser condensing optical system Laser condensing optical system

2006-08-30

2008-10-21

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S216000, C219S121600, C219S121620, C219S121830

Reexamination Certificate

active

07439477

ABSTRACT:
A laser condensing optical system of the present invention includes a laser beam source which emits a laser beam, a condensing optical system arranged between the laser beam source and a medium, the condensing optical system condensing the laser beam in the medium and recondensing light from a condensing point, a photodetector which detects the light recondensed by the condensing optical system, and a laser divergence point moving unit which moves the position of a laser divergence point of the laser beam along an optical axis of the laser beam in accordance with the refractive index of the medium in which the laser beam is condensed and the distance from a surface of the medium to a condensing position.

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