Measurement instrument, for distances and angles has optical distance meter, light blocking mask on optical axis between eyepiece and light receiving element that blocks light entering via eyepiece

摘要

The device has a sighting telescope tube (10) for sighting the object. An optical distance meter (20) has transmission optics that send measurement light via the telescope tube to the object. Receiving optics receive light reflected at the object. A light sensitive element receives light received from the object via the receiving optics. There is a light blocking mask on the optical axis between the eyepiece (14) and the light receiving element (31) that blocks light entering via the eyepiece.