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:
Jan. 27, 1998
Filed:
Mar. 28, 1996
Applicant:
Inventors:
Willem G Opheij, 5621 BA Eindhoven, NL;
Pieter A Schoneveld, 5627 PV Eindhoven, NL;
Dirk BJ. Samoy, 5621 BA Eindhoven, NL;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369112 ; 369 4412 ; 369103 ; 369109 ; 369122 ;
Abstract
An optical unit includes a first holder with a radiation source, a second holder with a radiation-sensitive detector, a grating, and a mirror. The unit further includes a cylindrical mounting having a cylinder axis and a wall oriented transversely to the cylinder axis, the grating and the mirror being formed by optically transparent wall portions of the wall. The mounting has a first positioning surface to which the first holder with the radiation source is secured and a second positioning surface to which the second holder with the radiation-sensitive detector is secured.