Optical: systems and elements – Lens – With light limiting or controlling means
Reexamination Certificate
2005-12-27
2005-12-27
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
With light limiting or controlling means
C359S385000, C359S739000
Reexamination Certificate
active
06980376
ABSTRACT:
An iris diaphragm device for a microscope includes an iris diaphragm having a stationary mount ring, a rotatable adjusting ring, and a plurality of blades. The plurality of blades form a diaphragm opening, which is steplessly adjustable, by rotation of the adjusting ring, between a maximum and a minimum opening size. A coupling linkage is connected to the adjusting ring and includes two levers. An actuation element drives the coupling linkage. A closure element is arranged on one of the levers in a way such that after a predefined size of the diaphragm opening has been established, a further actuation of the actuation element causes the closure element to pivot and cover the diaphragm opening.
REFERENCES:
patent: 3282182 (1966-11-01), Rentschler
patent: 3668995 (1972-06-01), Bardutzky
patent: 3836234 (1974-09-01), Farnsworth
patent: 4521076 (1985-06-01), Weber et al.
patent: 145986 (1903-11-01), None
patent: 546710 (1932-03-01), None
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patent: 2324804 (1973-12-01), None
patent: 794596 (1958-05-01), None
Wilkes-Iris Web Site “Drop-in Iris, Microscope and Lighting Accessories”. “Products”; Feb. 27, 2004, http://www.wilkes-iris.com/productsmain.html.
Edmund Optics Web Site “Online Catalog”. “Zero Aperture Series Iris Diaphragms”; Feb. 27, 2004; http://www.edmundoptics.com/IOD/DisplayProduct.cfm?productid=1373.
Bamberger Stefan
Weiss Albrecht
Davidson Davidson & Kappel LLC
Leica Microsystems Wetzlar GmbH
Sugarman Scott J.
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