All-reflective optical target illumination system with high numerical aperture

Patent · Mon Jan 01 00:00:00 EST 1979

OSTI ID:863383

Thomas, Carlton E ^[1]; Sigler, Robert D ^[1]; Hoeger, John G ^[2]

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1. Ann Arbor, MI
2. Newport, CA

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.

• DOE Contract Number: E(11-1)-2709
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4161351
• OSTI ID: 863383
• Country of Publication: United States
• Language: English

Related Subjects

all-reflective
optical
target
illumination
numerical
aperture
providing
focal
region
pair
confluent
collimated
light
beams
incident
associated
concave
eccentric
pupil
paraboloidal
reflective
surface
focused
outer
ellipsoidal
plane
reflector
beam
reflected
opposing
ellipsoids
inner
thence
collimated light
all-reflective optical
reflective optical
target region
numerical aperture
light beam
light beams
reflective surface
collimated beam
concave surface
target illumination
focal region
providing illumination
optical target
collimated beams
confluent collimated
target focal
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