Allied Vision 12338, User Manual

Specifications

16

S-Mount Lenses User Guide V1.1.0

S-8-F1.8-5MP-T1-2.5

Lens position at infinity (approximately)

Table 13

 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-8-F1.8-5MP-T1-2.5

S-8-F1.8-5MP-T1-2.5-IRC

Product code

12344

12345

Camera mount

S-Mount (M12 × 0.5)

Sensor size

Type 1/2.5

Focal length

8 mm

Aperture (f/#)

f/1.8

Supported pixel resolution

5 megapixels

Angle of view (diagonal)

48° with Type 1/2.5

Back focus

7.8 mm

IR correction type (S-8-F1.8-5MP-T1-2.5)

IR-optimized

IR cut

Relative illumination

>68%

Distortion

<-7%

Dimensions (diameter × length)

Ø 14 mm × 19.5 mm

Ø 14 mm × 21.2 mm

Mass

<10 g

Table 12: S-8-F1.8-5MP-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

26.2 mm

b

Lens front to front flange distance

13.6 mm

14.0 mm

c

Flange focal distance (optical) 

1

12.6 mm

d

Thread engagement length

3.9 mm

e

Lens back to sensor distance

7.1 mm

f

Lens thread end to sensor

1

 distance

8.7 mm

1

Optical distance measured to the active sensor surface,        

  disregarding microlenses and cover glass.

Table 13: S-8-F1.8-5MP-T1-2.5 lens position at infinity (with schematic drawing)

a

1

2

c

b

d

e

f

Lens