Reading Features; Fov Calculation - Datalogic Matrix 300N Reference Manual

6

6 READING FEATURES

6.1 FOV CALCULATION

Use the data in the following table to calculate the FOV for your application, referring to
Figure 68 and the formula below.
Model Lens Focus Type
Matrix 300N 4x1-0xx 6 mm manual
Matrix 300N 4x2-0xx 9 mm software
Matrix 300N 4x3-0xx 9 mm manual
Matrix 300N 4x4-0xx 12 mm manual
Matrix 300N 4x5-0xx 16 mm manual
The viewing angle has a tolerance of  1° depending on the reading distance.
where:
FOV = horizontal, vertical or diagonal FOV
x

= horizontal, vertical or diagonal viewing angles.
x
d = reading distance (in mm) from window surface to code surface
d = offset (in mm) from center of lens to external window surface
0
Example:
The FOV for a Matrix 300 412-0xx at a reading distance of 200 mm is:
FOV
FOV
88
Viewing Angle
d
0
Horizontal
7 mm 66°
14 mm 40°
11 mm 41°
4 mm 32°
5 mm 24°
FOV = 2 (d + d
x
d
0

Figure 68 – Reading Distance References
= 2 [(200 mm + 14 mm) tan (40°/2)]  156 mm
H
= 2 [(200 mm + 14 mm) tan (32°/2)]  123 mm
V
MATRIX 300N™ REFERENCE MANUAL
Viewing Angle Viewing Angle
Vertical Diagonal
55°
32°
34°
26°
19°
) tan ( /2)
0 x
d
Min Reading Distance
mm
80° 35
50° 22
52° 70
40° 70
30° 80
FOV
plane