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Calculating the Flange Back Distance

uEye Camera Manual Version 3.80

Calculating the Flange Back Distance

To correctly determine the flange back distance of a uEye camera, you need to consider the distance between the lens flange and the active area of the sensor and, additionally, the type and thickness of any materials inserted into the optical path.

The distance in air between the threaded flange and the active area is 17.526 mm with C-mount lenses and 12.526 mm with CS-mount lenses.

This mechanical distance can change due to the material-specific refractive index of the inserted materials. The glass cover of the sensor and all filters inserted into the optical path (see Filter Types table) must be taken into account in the calculation.

Figure 296: Calculating the flange back distance (schematic illustration)

Figure 296: Calculating the flange back distance (schematic illustration)

 

Designation

Description

a

Distance from threaded flange to active sensor area  (flange back distance)
17.526 mm*1) for C-mount
12.526 mm*1) for CS-mount

x

Distance from threaded flange to PCB

e

Distance from active sensor area to PCB

d

Thickness of the glass cover of the sensor

f

Filter thickness (optional)

n

Refractive index

h

Maximum sensor height above the PCB

*1) This distance describes the equivalent in air (see introduction above)

 

Hinweis

You can use the following formula to calculate the mechanical flange back distance:

Formel_Auflagemass_1_EN

The tolerances for the position accuracy of uEye camera sensors are given in the Position Accuracy chapter.

 

Calculating the flange back distance for uEye cameras with C-mount

uEye

Sensor

Thickness sensor glass [mm]

Active sensor area to PCB [mm]

Flange to active sensor area without filter glass[mm]

Flange to active sensor area with filter glass [mm]

Sensor height above the PCB [mm]

Designation

d

e

x'

x

h

CMOS

 

 

 

 

 

UI-112x/512x

0.550

1.280

18.990

19.340

2.380

UI-122x/522x *V022)

0.400

0.642

18.030

18.780

1.450

UI-122x/522x *V032)

0.550

1.400

19.110

19.460

2.500

UI-124x/524x

0.550

1.130

18.840

19.190

2.530

UI-154x/554x

0.525

1.270

18.970

19.320

2.480

UI-164x/564x

0.550

1.400

19.110

19.460

2.500

UI-155x/555x

0.550

1.400

19.110

19.460

2.500

UI-146x/564x

0.550

1.250

18.960

19.310

2.375

UI-148x/548x

0.400

0.725

18.380

18.730

1.375

UI-149x/549x

0.400

0.725

18.380

18.730

1.375

CCD

 

 

 

 

 

UI-214x/614x

0.500

2.910

20.600

20.950

4.430

UI-221x/621x

0.750

2.810

20.590

20.930

4.690

UI-241x/641x

0.750

2.810

20.590

20.930

4.780

UI-222x/622x

0.750

2.810

20.590

20.930

4.690

UI-223x/623x

0.750

2.810

20.590

20.930

4.780

UI-224x/624x

0.750

2.810

20.590

20.930

4.830

UI-225x/625x

0.500

2.910

20.600

20.950

4.430

UI-228x/628x

0.500

2.910

20.600

20.950

4.430

*V022) Sensor model MT9V022, identified by black housing (BGA package)

*V032) Sensor model MT9V032, identified by brown housing (technically identical with V022)

 

Calculation example: UI-154x-xx with IR-cut filter

(a = 17.526 mm, d = 0.525 mm, nGlass = 1.50, f = 1mm, nFilter = 1.53; see Filter Types table)

 

Formel_Auflagemass_2_EN

 

Calculating the flange back distance for USB uEye LE cameras with CS-mount

Hinweis

For USB uEye LE cameras with CS-mount, the flange back distance is only 12.526 mm!

 

USB uEye LE

sensor

Thickness sensor glass [mm]

Active sensor area to PCB [mm]

Threaded flange to active sensor area

Flange to active sensor area without filter glass[mm]

Flange to active sensor area with filter glass [mm]

Sensor height above the PCB [mm]

Bezeichnung

d

e

a

x

x'

h

CMOS

 

 

 

 

 

 

122x LE

0.550

1.400

13.10

16.08

17.63

2.500

124x LE

0.550

1.130

13.37

15.81

17.36

2.530

146x LE

0.550

1.250

13.25

15.93

17.48

2.375

148x LE

0.400

0.725

13.78

15.36

16.96

1.375

149x LE

0.400

0.725

13.78

15.36

16.96

1.375

154x LE

0.525

1.270

13.23

15.95

17.50

2.480

155x LE

0.550

1.400

13.10

16.08

17.63

2.500

164x LE

0.550

1.400

13.10

16.08

17.63

2.500

 


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