入射瞳孔 (mm):
Measured from the first lens surface on the object side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side.
12.23
Object Space Principal Plane (mm):
Measured from the first lens surface on the object side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side.
20.45
Image Space Principal Plane (mm):
Measured from the last lens surface on the image side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side.
-5.66
最大畸变（%）:
-0.96
Exit Pupil Position (mm):
Measured from the last lens surface on the image side. Positive values indicate direction toward the image side; negative values indicate direction toward the object side.
#54-857, 18mm DG Series Fixed Focal Length Lens, Working Distance versus Field of View Plot
#54-857, 18mm DG Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 210mm Working Distance, f4
#54-857, 18mm DG Series Fixed Focal Length Lens, Depth of Field Plot, 210mm Working Distance, f4
#54-857, 18mm DG Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 500mm Working Distance, f4
#54-857, 18mm DG Series Fixed Focal Length Lens, Depth of Field Plot, 500mm Working Distance, f4
Dimensions
FL (mm)
A (mm)
B (mm)
C (mm)
D (mm)
E (mm)
F (mm)
Filter Thread
(Dia. x Pitch)
18
48.0
32.3
4.6
40.0
-
2.5
M30.5 x 0.5
25
39.0
40.0
5.8
34.7
30.7
2.2
M30.5 x 0.5
35
45.0
50.1
11.6
40.0
42.1
0
M37.0 x 0.75
50
47.5
69.0
10.6
40.0
40.8
0
M39.0 x 0.5
75
54.0
116.2
19.2
46.0
67.7
0
M49.0 x 0.75
附件
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