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Optical Systems

Light-wave-distance-meter

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Light wave distance meter

Details

Inventors: Shibuya, Hiroto; Kitagata, Kouichi;
Assignee: Kabushiki Kaisha Topcon (Tokyo, JP)
Primary Examiner: Hellner; Mark
Assistant Examiner:
Attorney, Agent or Firm: Finnegan, Henderson, Farabow, Garrett & Dunner

This invention concerns a light wave distance meter which comprises a telescope unit supported on a framework such that the unit can rotate about a horizontal axis. This unit being provided with a telescope having a target in its line of sight, with an analog photoemitter which directs modulated light emitted by an optical device at the target, and with an analog photodetector which receives modulated light reflected from said target so as to measure the distance to said target.

DETAILED DESCRIPTION It is therefore an object of this invention to provide a light wave distance meter wherein noise can be reduced sufficiently.
To achieve the aforesaid object, this invention is characterized in that an analog light emitting part and an analog light receiving part are disposed in opposite positions to one another on either side of a telescope.

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