Allied Vision 12338, User Manual

Page: 14 / 20

Specifications
14 S-Mount Lenses User Guide V1.1.0
S-4.1-F3-5MP-T1-2.5
Lens position at infinity (approximately)
Table 9 defines values for the position of the lens when focused to infinity. We
recommend using a minimum thread engagement length of 1.0 mm (two 360
degree turns). Below this length, lens mounting is not stable enough.
Feature S-4.1-F3-5MP-T1-2.5 S-4.1-F3-5MP-T1-2.5-IRC
Product code 12340 12341
Camera mount S-Mount (M12 × 0.5)
Sensor size Type 1/2.5
Focal length 4.1 mm
Aperture (f/#) f/3.0
Supported pixel resolution 5 megapixels
Angle of view (diagonal) 82° with Type 1/2.5
Back focus 5.3 mm
IR correction type IR-optimized IR cut
Relative illumination >70%
Distortion <0.4%
Dimensions (diameter × length) Ø 14 mm × 17.9 mm Ø 14 mm × 17.8 mm
Mass <10 g
Table 8: S-4.1-F3-5MP-T1-2.5 specifications
ID Component or distance type IR-optimized IR cut
1 Electronics component -
2 Sensor with cover glass -
a
Lens front to sensor
1
distance
21.8 mm
b Lens front to front flange distance 9.2 mm 9.7 mm
c
Flange focal distance (optical)
1
12.6 mm
d Thread engagement length 6.9 mm
e Lens back to sensor distance 4.1 mm
f
Lens thread end to sensor
1
distance
5.7 mm
1
Optical distance measured to the active sensor surface,
disregarding microlenses and cover glass.
Table 9: S-4.1-F3-5MP-T1-2.5 lens position at infinity (with schematic drawing)
a
1
2
c b
d e
f
Lens