RADAR - HONDA MOTOR CO LTD

Title:

RADAR

Document Type and Number:

WIPO Patent Application WO/1999/044074

Kind Code:

A1

Abstract:

A laser beam emitted from a laser diode is shaped into a vertically narrow light beam having a limited horizontal width and scanned horizontally. The light beam reflected by the object is captured by a horizontally oblong light receiving area which is scanned vertically and has a limited vertical width, and received by a photodiode. Even if the vertical width of the light beam is large enough to absorb the vertical error of attachment of the radar, by vertically scanning the horizontally oblong light receiving area, the period during which the direct rays from the sun enter the light receiving area and consequently the detection is impossible can be shortened. With this constitution, except the case where the height of the sun coincides with the height of the object, the influence of the direct rays of the sun can be minimized, and the object can be detected reliably without precise aiming.

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Inventors:

KIKUCHI HAYATO (JP)

Application Number:

PCT/JP1998/004670

Publication Date:

September 02, 1999

Filing Date:

October 15, 1998

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
KIKUCHI HAYATO (JP)

International Classes:

G01S17/931; G05D1/02; G01S7/48; G01S13/42; G01S17/42; G01S7/481; (IPC1-7): G01S7/48; G01S17/93; G01S13/93

Foreign References:

JPS62115389A	1987-05-27
JPH09178856A	1997-07-11
JPH08313632A	1996-11-29
JPH07320199A	1995-12-08
JPH0542144A	1993-02-23

Other References: