Conduit construction laser system and laser beam receiver

Details Conduit construction laser system and laser beam receiver Conduit construction laser system and laser beam receiver

1992-11-10

1994-09-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

356400, H01J 4014

Patent

active

053471369

ABSTRACT:
A conduit construction laser system comprises a light source producing the laser beam which is pivotally mounted in its front region emitting the laser beam in its longitudinal and transverse axes. The rear region of this light source is articulated to an adjusting device which is horizontally displaceable transversely to the axis of the light source for lateral alignment of the laser beam. The adjusting device has a vertical spindle on which the rear end of the light source is mounted upwardly and downwardly movably so that the laser beam can be levelled. Owing to a second spindle, the inclination of the laser beam can be adjusted on the basis of the levelling. A laser beam receiver has photocells which are arranged in the form of a target cross on the side facing the laser beam and are connected to similarly arranged light-emitting diodes on the side remote-from the laser beam. The corresponding light-emitting diode lights up when the laser beam impinges on a photocell. Owing to its compact design, the conduit construction laser system may be used for the construction of small diameter pipelines. Measuring work may be carried out up to a distance of 300 m together with the receiver.

REFERENCES:
patent: 4062634 (1977-12-01), Rando et al.
patent: 4904081 (1990-02-01), Miyahara
patent: 4904086 (1990-02-01), Cope
patent: 4907881 (1990-03-01), Jones

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