G - Physics – 01 – P
Patent
G - Physics
01
P
73/58
G01P 5/00 (2006.01) G01F 1/66 (2006.01) G01P 3/36 (2006.01) G01P 5/26 (2006.01)
Patent
CA 1316705
Abstract In a device for measuring the speed of moving light-scattering objects by means of laser beams, with which a periodic intensity distribution (4) is produced at the measuring point (3), and by means of a detecting device (5, 7; 8, 9, 10) for light scattered by the object, it is possible to produce the periodic intensity distribution in a simple fashion with a laser diode array (1) in which a plurality of laser diodes are arranged at a defined separation from one another. Light emitted by the laser diode is focussed at the measuring point (3) with a focusing optical system (2). In addition, when measuring speed it is possible to discriminate direction by arranging the laser diode array (1, 13) such that no emission occurs in at least one such location (11') of the laser diode (11), so that an asymmetric intensity distribution is produced at the measuring point (3). -15-
566909
Dopheide Dietrich
Faber Michael
Reim Gerhard
Taux Gunter
Dieser Vertreten Durch Den Prasidenten Der Physikalisch-Technisc Bundesrepublik Deutschland Vertreten Durch Den Bundesminister Fu
Kirby Eades Gale Baker
LandOfFree
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