Optical: systems and elements – Compound lens system – With curved reflective imaging element
Reexamination Certificate
2007-02-20
2007-02-20
Robinson, Mark A. (Department: 2872)
Optical: systems and elements
Compound lens system
With curved reflective imaging element
C359S351000, C359S355000, C359S727000
Reexamination Certificate
active
10434374
ABSTRACT:
A reduced size catadioptric objective and system is disclosed. The objective may be employed with light energy having a wavelength in the range of approximately 190 nanometers through the infrared light range. Elements are less than 100 mm in diameter. The objective comprises a focusing lens group configured to receive the light energy and comprising at least one focusing lens. The objective further comprises at least one field lens oriented to receive focused light energy from the focusing lens group and provide intermediate light energy. The objective also includes a Mangin mirror arrangement positioned to receive the intermediate light energy from the field lens and form controlled light energy for transmission to a specimen. The Mangin mirror arrangement imparts controlled light energy with a numerical aperture in excess of 0.65 and up to approximately 0.90, and the design may be employed in various environments.
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Armstrong J. Joseph
Chuang Yung-Ho
Shafer David R.
Fineman Lee
Robinson Mark A.
Smyrski Law Group, A P.C.
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