Spectra Precision Focus 30 Service Manual

Chapter 3
Theory of Operation
Focus 30/35 Service Manual 3 - 4 P/N 79000035_SM, Version 1.5
Telescope unit
The telescope makes it possible to aim at a target visually. It consist of front lense, selective mirrors,
focusing lens, erecting prism (Porro prism), and eyepiece.
Furthermore to the normal function of a telescope, it transmits the laser beam from the distance unit
and the tracker transmitter. It also receives the target signal and directs them to the distance meter and
the tracker receiver camera.
Location of telescope
Fig. 3-3 Section view of the telescope
Porro prism
Eyepiece
Focusing lens
Motorized focussing drive
Transmitter prism
Frontlens
Selective
mirrors
Reticle

Spectra Precision Focus 30 Specifications

General

Brand	Spectra Precision
Model	Focus 30
Category	Measuring Instruments
Language	English