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:
May. 17, 1994
Filed:
Sep. 30, 1992
Applicant:
Inventor:
Carl D Leonard, Ann Arbor, MI (US);
Assignee:
IMRA America, Inc., Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ; G01C / ; G01B / ; B60T / ;
U.S. Cl.
CPC ...
356-5 ; 180169 ; 356-1 ; 356141 ;
Abstract
In exemplary embodiments, a diffraction grating is placed in the beam path of the generated light source. The grating expands the beam's field of view by distributing the transmitted radiation into plural sub-fields. Sub-fields associated with distant objects are set to a greater intensity to ensure reflection of the sub-fields back to the receiver. Sub-fields directed to closer objects have a lesser intensity to avoid detection of false objects.