TM 5-6675-317-14
4-2.3 Equipment Data.
Zoom Range
Optical Rotation
Optical Stretch Correction
Power Requirements
Illumination
Map Field of View
4-3. TECHNICAL PRINCIPLES OF OPERATION.
lx to 7x
360
1:1 to 2:l
110 V, 60 Hz
Three 150 W Flood Lamps
7.49 in. (19. O cm)
4-3.1 General:
The above-stage illuminator or below-stage illuminator shines light
on the transparency or photograph mounted on the glass stage. The image of the
transparency or photograph is reflected from the mirror into the optical lens. The
optical system magnifies,
rotates or distorts the reflected image to match the map.
The operator illuminates the map with the map illuminator and views through the
optical system.
The operator’s view of the map has an apparent image of the photo-
graph superimposed on it.
4-3
