Vivotek IP8172 Quick Installation Manual page 10

NOTE:
When choosing the lens for your IP8172/72P, please notice the specifications as below.
1. Flange back length [distance A-B (CMOS sensor)] must be longer than 12.5mm. If
the flange back length is too short, the bottom of screw mount may hit the IR Cut
Filter, or result in out of focus when adjusting the focus controller.
2. The screw mount (distance A-C) must be shorter than 5.2mm; in case that the bottom
of screw mount may hit the IR Cut Filter.
3. The distance between the edge of lens (D) and front panel (E) must be longer than
0.5mm; or, it may hit the front panel when adjusting the focus controller, or result in
out of focus.
2
1
IR Cut
Filter
A C
3
EN - 9
A
B
D (lens edge)
E (front panel)