All-reflective optical target illumination system with high numerical aperture
- Ann Arbor, MI
An all-reflective optical system for providing illumination of a target focal region at high numerical aperture from a pair of co-axially, confluent collimated light beams. A target cavity is defined by a pair of opposed inner ellipsoidal reflectors having respective first focal points within a target region and second focal points at a vertex opening in the opposing reflector. Outwardly of each inner reflector is the opposed combination of a spherical reflector, and an outer generally ellipsoidal reflector having an aberrated first focal point coincident with the focus of the opposing spherical reflector and a second focal point coincident with the second focal point of the opposing inner ellipsoidal reflector through a vertex opening in the spherical reflector. The confluent collimated beams are incident through vertex openings in the outer ellipsoidal reflectors onto respective opposing spherical reflectors. Each beam is reflected by the associated spherical reflector onto the opposing outer ellipsoidal reflector and focused thereby onto the opposing inner ellipsoidal reflector, and then onto the target region.
- DOE Contract Number:
- E(11-1)-2709
- Assignee:
- KMS Fusion, Inc. (Ann Arbor, MI)
- Patent Number(s):
- US 4084887
- OSTI ID:
- 863055
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
optical
target
illumination
numerical
aperture
providing
focal
region
pair
co-axially
confluent
collimated
light
beams
cavity
defined
opposed
inner
ellipsoidal
reflectors
respective
vertex
opposing
reflector
outwardly
combination
spherical
outer
aberrated
coincident
focus
incident
openings
beam
reflected
associated
focused
collimated light
all-reflective optical
reflective optical
target region
numerical aperture
light beam
light beams
collimated beam
target illumination
focal region
ellipsoidal reflector
providing illumination
optical target
collimated beams
ellipsoidal reflectors
confluent collimated
target focal
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