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. 01, 2002
Filed:
Sep. 21, 1999
Hayato Kikuchi, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A laser beam transmitted from a laser diode is run for scanning laterally as a transmitted-beam elongated vertically with a lateral width thereof limited. A wave of the transmitted-beam reflected from an object is caught in a beam receiving area which is elongated laterally with a vertical width limited and scanned vertically, and is received by a photo-diode. Even if the vertical width of the transmitted-beam is set at a sufficient large value to absorb an error in the vertical mounting of a radar system, the period of time when the direct sun rays enter the beam receiving area to make the detection impossible can be shortened by vertically scanning the beam receiving area elongated laterally. Thus, the influence of the direct sun rays can be maintained to the minimum to reliably detect the object without need for a precise aiming, excluding the case where the height position of the sun corresponds to the level of the object.