Patent Number: 6,252,696

Title: Subassembly for generating an optically active slit

Abstract: A subassembly for generating an optically active slit with a changeable slit width s, preferably for slit lamps, with two slit jaws which are displaceable relative to one another at a straight-line guide and between which the slit is formed, wherein one of two guide paths is allocated to each slit jaw. In a subassembly for generating an optically active slit, the guide paths are formed at portions of a guide rail which project out freely in the displacement directions of the slit jaws from a clamping position which is fixed with respect to the frame. The guide rail can accordingly expand without hindrance in the displacement direction under the influence of temperature without the parallelism of the slit being affected thereby.

Inventors: Koschmieder; Ingo (Jena, DE), Link; Guenter (Jena, DE), Steinmetz; Dietmar (Bucha, DE), Luther; Egon (Cospeda, DE)

Assignee: Carl Zeiss Jena GmbH

International Classification: A61B 3/13 (20060101); A61B 3/135 (20060101); G02B 026/02 ()

Expiration Date: 06/26/2018