Optical: systems and elements – Compound lens system – Microscope
Reexamination Certificate
2007-09-25
2007-09-25
Pritchett, Joshua L (Department: 2872)
Optical: systems and elements
Compound lens system
Microscope
C359S368000, C359S383000, C359S385000
Reexamination Certificate
active
11327783
ABSTRACT:
In adjusting a microscope having at least two objectives for superimposing measuring beams of light in an object space to the end of obtaining an interference pattern and for monitoring the object space, each objective having a focal point, a focal plane and a pupil, auxiliary beams of light which are distinguishable from the measuring beams are directed into the objectives, and the auxiliary beams getting back out of the objectives are superimposed to obtain an auxiliary interference pattern. Further, the auxiliary beams getting back out of the objectives are imaged as spots.
REFERENCES:
patent: 3825349 (1974-07-01), Nomarski
patent: 5671085 (1997-09-01), Gustafsson et al.
patent: 6862137 (2005-03-01), Ott
patent: 2004/0114225 (2004-06-01), Engelhardt et al.
patent: 4040441 (1992-07-01), None
patent: 19914049 (2000-10-01), None
patent: 0491289 (1996-04-01), None
Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.
Pritchett Joshua L
Thomas Kayden Horstemeyer & Risley LLP
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