Survey instrument and method for inspection of optical type rainy sensor

摘要

As for this invention, optical type rainy sensor (4) survey instrument for inspection (1; 20; 40; 50) it is to in regard, the optical type impression raindrop sensor (4) is formed as detected the humidity by measuring the reflected component of the light beam, the rainy sensor (4) the installation device for installation the survey instrument section which can provide inside (5) and the light beam (7,21) we have possessed, the survey instrument section, in order to reflect the specified component of the light beam, has had the territory where it is formed.