The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1989
Filed:
Nov. 20, 1987
Jurgen Zobel, Bretten-Sprantal, DE;
Siegfried Karst, Eisinger, DE;
Rolf Zickwolf, Bretten-Rinklingen, DE;
Wilfried Uhrich, Oberderdingen, DE;
Richard Wolf GmbH, , DE;
Abstract
An objective for endoscopes with a lateral objective lens comprises an elongated prism having a convex proximal end surface and a distal end on which are joined by cementing after alignment on an optical axis, a diaphragm, a negative lens and optionally a wedge-shaped support, to form an indissoluble unit. The lens, the diaphragm and the support if present are provided with sections protruding radially beyond a desired periphery of the objective, which sections are ground off together to the dimension of the prism circumference, so that a rod-shaped objective unit is formed.