Apparatus for determining the path of a pulsed light beam

Details Apparatus for determining the path of a pulsed light beam Apparatus for determining the path of a pulsed light beam

1987-10-16

1989-09-19

Tarcza, Thomas H.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356150, 356152, 356338, 356340, G01B 1126, G01N 2100

Patent

active

048675563

ABSTRACT:
Apparatus measures the scattered radiation received by a detector device in a measuring station (F) situated on the side of the beam path (O). The detector device has a sensitivity lobe which has a given limited lobe width (2.DELTA..theta.) and which lobe can assume different angles (.alpha.) relative to a reference line (R). In the measuring station (F) the time distance between the front flank and the rear flank of the scattered radiation reaching the detector device, i.e. the pulse width or the pulse length of the scattered radiation, is determined in at least two different angular positions (.alpha.) of the sensitivity lobe. The position of the light beam path is then determined by means of the measured pulse widths in combination with the associated known angular positions of the sensitivity lobe.

REFERENCES:
patent: 4212534 (1980-07-01), Bodlaj
patent: 4289397 (1981-09-01), Itzkan et al.
patent: 4538907 (1985-09-01), Rocchi
patent: 4614426 (1986-09-01), Baxter et al.

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