Instrument zur Automatischen Vermessung

Details

Veröffentlichungs-Nr.

EP3130888

Aktenzeichen

EP16182833

Anmeldetag

4. August 2016

Veröffentlichung

17. Oktober 2018

Erteilung

17. Oktober 2018

Rechtsraum

EP

IPC

G01C1/02G01C15/00G01S17/08G01S3/786G01S7/481G02B5/22G02B27/14

Abstract

In an automatic survey instrument that divides reflected light from a target into collimation light, range-finding light, and tracking light, a configuration of an optical absorption filter for visible light absorption to be used for SN ratio improvement is simplified, and deterioration in automatic tracking performance due to a defect inside the optical absorption filter is suppressed. Between two prisms (41, 43) defining a second reflecting surface (45) of a dichroic prism (40) through which reflected light from a target enters, an optical absorption filter (46) that absorbs a wavelength band of visible light is inserted, and the second reflecting surface (45) is formed at a border between a rear surface of the optical absorption filter (46) with respect to a light propagation direction and a surface of the prism (43) on the rear side of the optical absorption filter in the light propagation direction.

Anmelder

Firma

TOPCON CORPORATION

Land

🇯🇵 Japan

Fachgebiete