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. 11, 1982
Filed:
Jan. 23, 1980
Nippon Soken, Inc., Nishio, JP;
Abstract
An optical velocity measuring apparatus applicable to measurement of the velocity of a vehicle relative to the road. A pair of light sensors mounted on the bottom of the vehicle body spaced from each other in a direction of the movement of the vehicle respectively receive rays of light reflected from different spots on the road through an optical system and produce electric signals indicative of the surface conditions of the spots. A time lag from the detection of a particular spot by the forward light sensor until the backward light sensor detects the same spot is measured to determine the velocity of the vehicle. The optical system is comprised of first and second lenses each having a peripheral portion cut away by a plane parallel to the optical axis. The first and second lenses are aligned so that the cut away faces are in contact with each other and that the optical axes are in parallel to and spaced a predetermined distance from each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile