Scanning method used by laser radar and laser radar for carrying

Details Scanning method used by laser radar and laser radar for carrying Scanning method used by laser radar and laser radar for carrying

1988-05-10

1991-02-19

Hellner, Mark

Communications: directive radio wave systems and devices (e.g.,

Determining direction

Scanning

356152, G01S 1788

Patent

active

049951025

ABSTRACT:
A scanning method used by a laser radar for scanning a predetermined scanning region with a laser beam so that the whole of the scanning region is illuminated with the laser beam, is disclosed in which a laser beam makes a first spiral scanning outwardly or inwardly and then makes a second spiral scanning inwardly or outwardly so that the rotational direction of the second spiral scanning is the same as that of the first spiral scanning, and the first spiral scanning and the second spiral scanning are repeated. According to this scanning method, the output of drive means for driving an optical system which causes a laser beam to perform a scanning, can be reduced, since a maximum power necessary for causing a body large in inertia to make a curvilinear or rotational motion is far smaller than a maximum power necessary for causing the body to make a linear motion.

REFERENCES:
patent: 2526314 (1950-10-01), Alexanderson et al.
patent: 2556673 (1951-06-01), Budenbom
patent: 2925594 (1960-02-01), Garrett
patent: 2929061 (1960-03-01), Dauguet
patent: 3124797 (1964-03-01), Orear
Vogel et al., "Lasers: Devices and Systems--Part III", Electronics, Nov. 1961, pp. 81-85.

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