Optical: systems and elements – Lens – Selective wavelength transmitting or blocking
Reexamination Certificate
2008-06-05
2010-06-15
Collins, Darryl J (Department: 2873)
Optical: systems and elements
Lens
Selective wavelength transmitting or blocking
C359S647000, C359S355000
Reexamination Certificate
active
07738187
ABSTRACT:
An optical element (1) made of a material that is transparent to wavelengths in the UV region, which optical element (1) includes an oleophobic coating (6, 7) outside of its optically free diameter whose disperse component of the surface energy is preferably 25 mN/m or less, particularly preferably 20 mN/m or less, in particular 15 mN/m or less. In addition or as an alternative, the optical element (1) within its optically free diameter comprises an oleophilic coating (9b,9c) that is transparent to wavelengths in the UV region, with the disperse component of the surface energy of this coating preferably being more than 25 mN/m, particularly preferably more than 30 mN/m, in particular more than 40 mN/m. The optical element may be provided in an arrangement in which it dips at least partially into an organic liquid.
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Duesing Ruediger
Fedosenko Gennady
Pazidis Alexandra
Six Stephan
Carl Zeiss SMT AG
Collins Darryl J
Sughrue & Mion, PLLC
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