Optical: systems and elements – Compound lens system – Microscope
Reexamination Certificate
2008-06-27
2010-11-23
Consilvio, Mark (Department: 2872)
Optical: systems and elements
Compound lens system
Microscope
C359S388000
Reexamination Certificate
active
07839566
ABSTRACT:
A surgical microscopy system having an illumination system is provided. The illumination system comprises a xenon gas discharge lamp and a spectral filter which is optionally positionable into an illumination beam path of the surgical microscopy system and removable from the same. The spectral filter substantially exhibits, in a wavelength range between 400 nm and 700 nm, a transmission increasing from about 0.12 to 1 having a gradient between 0.025
m and 0.0035
m, in particular 0.00293
m. Thus, the illumination system is enabled to provide light having two different spectral characteristics which is advantageous in particular for imaging structures in the human eye scattering to a different degree.
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Schott Glaswerke, “Optische Glasfilter”, 1984, XP002494841, pp. 27, 28, 117, and 129.
Andrews Delbert Peter
Reimer Peter
Carl Zeiss Surgical GmbH
Consilvio Mark
Knobbe Martens Olson & Bear LLP
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