Laser spot projector

Details Laser spot projector Laser spot projector

1986-10-14

1988-10-11

Hindenburg, Max

Surgery

Truss

Pad

128395, A61B 1736

Patent

active

047763353

ABSTRACT:
Disclosed is a laser spot projector for use with a laser coagulation system in which a laser beam is radiated as a focussed spot into a portion selected to be thermally coagulated. A laser source produces a laser beam, and a focussing lens focusses the laser beam on the selected portion in the form of a focussed laser beam spot. A variator lens is displaceably arranged between the laser source and focussing lens for changing the magnification of the laser spot depending upon the displacement of the variator lens. The variator lens is selectably displaceable to two separate positions where the image point is conjugated with the object point with respect to the variator lens. This arrangement makes it possible to selectably provide two focussed laser beam spots each having a different spot diameter.

REFERENCES:
patent: 4397310 (1983-08-01), Pomerantzeff
patent: 4520816 (1985-01-01), Schacher et al.
patent: 4538608 (1985-09-01), L'Esperance
patent: 4554917 (1985-11-01), Tagron
patent: 4628416 (1986-12-01), Dewey

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