Optical: systems and elements – Lens – With support
Reexamination Certificate
2007-05-01
2007-05-01
Thompson, Timothy (Department: 2873)
Optical: systems and elements
Lens
With support
C359S822000, C359S811000
Reexamination Certificate
active
11061178
ABSTRACT:
An interferometric profiler includes an opening adapted to receive a removable compensating element in the reference arm. The compensating element is mounted on a holder adapted for slidable engagement within the opening. A retaining mechanism keeps the holder firmly in place in the opening. The reference mirror of the profiler is mounted on a slidable stage urged away from the compensating element by a spring-loaded mechanism. A knob is provided to manually push the stage inward to its operating position proximate to the compensating element. A stop ensures that the travel of the stage is limited to a safe distance from the compensating element and a lock is provided to releasably hold the stage in place during use. Multiple objectives with different magnifications may be coupled to the module for alternative use according to the needs of particular applications. An illumination module may also be coupled to the reference-arm module.
REFERENCES:
patent: 4135778 (1979-01-01), Lincoln
patent: 6628339 (2003-09-01), Ferland et al.
patent: 2002/0197075 (2002-12-01), Crockett
Guenther Bryan W.
Novak Erik L.
Durando Antonio R.
Thompson Timothy
Veeco Instruments Inc.
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