Aperture stop assembly for a laser beam optical system

Details Aperture stop assembly for a laser beam optical system Aperture stop assembly for a laser beam optical system

1980-06-18

1982-12-07

Sikes, William L.

G02F 133

Patent

active

043623646

ABSTRACT:
An aperture stop assembly is shown which may be utilized within a laser beam optical system whose laser beam has been split into zero, first and second order beams. A lens is provided to focus the split beams upon a focal plane where an aperture stop is mounted having an aperture aligned with the desired first order beams. The reflective surface of the aperture is arranged at an angle to reflect the unwanted zero and second order beams into a series of absorption baffles found within the aperture stop housing or the aperture stop may absorb unwanted beams directly.

REFERENCES:
patent: 3220003 (1965-11-01), Montague et al.

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