Optical: systems and elements – Lens – Microscope objective
Reexamination Certificate
2005-09-27
2005-09-27
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
Microscope objective
C359S661000
Reexamination Certificate
active
06950241
ABSTRACT:
A miniature microscope objective includes at least three or four miniature lenses including from object to image at least a first positive lens, a second positive lens, and a third lens. The numerical aperture (NA) is greater than 0.4 and no more than approximately 0.9. The magnification variation ΔM/M over red, green and blue wavelengths spanning 165 nm or more is less than 0.3% to 1.5%, an image size variation is less than a sampling distance, at least one lens has an aspheric departure, and the miniature objective includes at least one diffractive surface.
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Birdwell & Janke, LLP
DMetrix Inc.
Sugarman Scott J.
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