Laser theodolite

Details Laser theodolite Laser theodolite

1997-08-28

1999-05-18

Nguyen, Thong

Optical: systems and elements

Compound lens system

Telescope

359399, 385 88, G02B23/00;6/26

Patent

active

059055928

ABSTRACT:
A laser theodolite is provided which comprises a telescope (6), a focusing lens (10) and a reticle (12) provided in the telescope, a polarization beam splitter (13') provided on an optical axis (O) between the focusing lens and the reticle for reflecting a laser beam (S1) in a direction of collimation, and a laser-beam light source portion (16) for emitting the laser light toward the polarization beam splitter (13'). The laser-beam light source portion (16) and the reticle (12) are conjugate with respect to the polarization beam splitter (13').

REFERENCES:
patent: 3786370 (1974-01-01), Barry et al.
patent: 5505000 (1996-04-01), Cooke
patent: 5513044 (1996-04-01), Kubo
patent: 5745623 (1998-04-01), Ohtomo et al.

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