ELECTRO-OPTICAL RANGE FINDER

European Patent Office Patent

PATENT NO 0205406
APP PUB NO EP-0205406-A2
SERIAL NO

86810250

Stats

Importance

Loading Importance Indicators... loading....

Abstract

See full text

For electrooptical measurement of distance with modulation of light external to the light source (1) a modulator system (5, 7, 8, 11) with low sensitivity to temperature and with a low modulating voltage is disclosed. The temperature dependence of the static birefringence of a modulating crystal (7) is compensated by passing the modulated light beam (6), after traversing the crystal (7), a quarterwave plate (11), the measured path (9) and the quarterwave plate (11) again-a second time through the crystal (7) with its polarization rotated by 90 DEG . The light beam returning from the measured path is separated from its source (1) by means of a polarizing beam splitter (5).

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • Owner owned or assignment not recorded

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

  • No Inventor to display

Cited Art Landscape

Load Citation