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, 1978
Filed:
Feb. 20, 1976
Applicant:
Inventors:
Christian Lietar, Morges, CH;
Jean-Pierre Blanc, Morges, CH;
Assignee:
Robert Bosch GmbH, Stuttgart, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350223 ;
Abstract
To reduce the size of the beam spot of a laser beam, a four-element lens having the characteristics set forth in the table forming part of the specification, is used, thereby providing a large-aperture objective with a field being about 2.degree., coma corrected and with low image field convexity.