Test device for determining the extinction value of a laser rang

Details Test device for determining the extinction value of a laser rang Test device for determining the extinction value of a laser rang

1981-09-11

1984-05-29

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356446, 434 4, G01C 308

Patent

active

044511469

ABSTRACT:
A test device for determining the extinction value of a laser range finder having a laser transmitter and a laser receiver characterized by the device having an optical shield for shielding an unattenuated laser beam from the transmitter, a filter chamber containing attenuation filters being disposed in the optical beam path, a scatter unit having a dispersion disk having a scattering range for diffusely scattering the laser light, an optical coupling unit for coupling light into the laser receiver and at least one light waveguide line of a specific length having one end disposed in the scatter range of the dispersion disk and the other end for releasing the light traveling in the waveguide into an optical beam so that the laser light pulses from the transmitter are both attenuated and scattered prior to being coupled into the receiver. The test device enables checking the system sensitivity of laser range finders.

REFERENCES:
patent: 4068952 (1978-01-01), Erbert et al.
patent: 4121890 (1978-10-01), Braun
patent: 4139769 (1979-02-01), McCrum et al.
patent: 4167328 (1979-09-01), Cross et al.
patent: 4189233 (1980-02-01), Hurt et al.
patent: 4314762 (1982-02-01), Gresko
A. Richelt et al., "Improved Optical Tapping Elements for Graded-Index Optical Fibers", Siemens Forsch.-u. Entwickl.-Ber, vol. 8, No, 3, 1979, pp. 130-135.
G. Knoblauch, "Informationsubertragung uber Lichtwellenleiter im industriellen Bereich", Siemens Components, 18, 1980, pp. 144-150.

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