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:
Aug. 15, 1989
Filed:
Apr. 11, 1988
Applicant:
Inventor:
Jurgen Zobel, Bretten-Sprantal, DE;
Assignee:
Richard Wolf GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61D / ;
U.S. Cl.
CPC ...
358 98 ; 358225 ; 350480 ; 350414 ;
Abstract
A wide-angle objective for endoscopes, in particular for video endoscopes comprises fibre image conductors or CCD image transducers, in which known instruments are taken as a basis, in which a distally positioned objective comprises a meniscus lens with its concave surface facing towards the object, as well as another optical component located on the image side. To secure an uncomplicated structure, adequate image quality, a wide object field angle and short structural length, the image-side optical component is also produced as a meniscus lens.