DH Network Camera
Product Construction Instruction Manual (Passenger Flow Solution)
10
4140 Stereo Vision Camera
Type selection principles: Select a proper focal length of lens according to the installation height.
DH-IPC-HD4140X-3D series high definition (1.3 MP) stereo vision top-mounted dome network
cameras
Figure 6
DH-IPC-HD4140X-3D series cameras
NOTE
1. The detection width is calculated on the basis of a 1.8 m tall person; persons falling within this
width can be effectively detected;
2. W is the effective detection width corresponding to the central axle of the camera. Do not mistake
it for the detection width of the farthest end or nearest end of the camera;
3. Advised installation heights corresponding to different focal lengths;
Top-mounting manner:
Focal length
Installation
Height
Recommended
height
Maximum
detection width
2.1 mm
2.2-3.3 m
2.75 m
4.7 m
2.8 mm
2.5-3.8 m
3.2 m
4.1 m
Top-mounting--he pairing of parameters is given as follows:
Focal
length
Installation
height
(m)
Surveillance width
W
(m)
Surveillance length
L
(m)
2.1 mm
2.2
1.2
0.8
2.75
3
1.865
3.3
4.7
3
2.8 mm
2.5
1.4
0.9
3.2
2.9
1.82
3.8
4.1
2.6
