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. 11, 1981
Filed:
Nov. 30, 1978
Applicant:
Inventor:
Philippe Roussel, Thun, CH;
Assignee:
Lasag S.A., Thun, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01B / ;
U.S. Cl.
CPC ...
356445 ; 356384 ; 356397 ;
Abstract
An optical detector for the detection of very small objects comprises a first optical system defining an optical path and being operable to transmit electromagnetic radiation onto an object to be detected; a second optical system defining an optical path parallel to said optical path of said first optical system and being operable to receive said electromagnetic radiation after diffusion and reflection by said object; and a converging lens associated in common with said first and second optical systems and arranged such that said optical paths of said first and second optical systems are parallel to and symmetrical about the axis of said converging lens on one side thereof.