All-reflective optical target illumination system with high nume

Details All-reflective optical target illumination system with high nume All-reflective optical target illumination system with high nume

1976-05-07

1979-07-17

Henry, Jon W.

350299, G02B 510

Patent

active

041613511

ABSTRACT:
An all-reflective optical system for providing illumination of a target focal region at high numerical aperture from a pair of confluent collimated light beams. The collimated beams are each incident upon an associated concave eccentric pupil paraboloidal reflective surface, and thereby each focused through an opening in an associated outer ellipsoidal reflective surface onto a plane reflector. Each beam is reflected by its associated plane reflector onto the opposing concave surface of the outer ellipsoids to be focused through an opening in the plane surface onto an opposing inner concave ellipsoidal reflective surface, and thence onto the target region.

REFERENCES:
Laser Program Annual Report, 1974, "Angle-Amplifying Optics," Glass, pp. -239, Oct. 1975.

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