Electronic distance meter has device associated with transmission optics that alters measurement light beam diameter with controller varying beam diameter depending on object distance

摘要

The device has a sighting telescope tube with an objective, a reflection element, an optical distance meter with optics that transmits measurement light via the reflection element and the objective and reception optics that receives the light reflected at the object, passed by the objective and not blocked by the reflection element alters the measurement light beam diameter. A controller varies the beam diameter depending on the object distance. The device has a sighting telescope tube (10) with an objective (11), a reflection element after the objective, an optical distance meter (20) with transmission optics that transmits measurement light via the reflection element and the objective and reception optics that receives the light reflected at the object, passed by the objective and not blocked by the reflection element. A device associated with the transmission optics alters the measurement light beam diameter and a controller varies the beam diameter via the device depending on the object distance.