LIGHT RADAR DEVICE

PROBLEM TO BE SOLVED: To positively obtain homogeneous radar performance and stable performance for detecting an object over an entire azimuth in a light radar device being used, for example, for a vehicle. SOLUTION: A luminous flux being emitted from a light source 10 is introduced to optical eleme...

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Bibliographische Detailangaben
1. Verfasser:	YAMABUCHI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To positively obtain homogeneous radar performance and stable performance for detecting an object over an entire azimuth in a light radar device being used, for example, for a vehicle. SOLUTION: A luminous flux being emitted from a light source 10 is introduced to optical elements 36 and 37 with focal distance corresponding to the ratio of small and large spread angles that are the astigmatic difference thus forming the shape of the section of the luminous flux in a circle. Furthermore, the luminous flux is generated into fan beams with a spread angle only in vertical direction by an optical element 40 on a cylindrical surface, and at the same time an actuator 50 is rotated for scanning the fan beams in an entire azimuth.