MATRIX 300N™ REFERENCE MANUAL
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.
The viewing angle has a tolerance of 1° depending on the reading distance.
FOV
x
= 2 (d + d
0
) tan (
x
/2)
where:
FOV
x
= horizontal, vertical or diagonal FOV
x
= horizontal, vertical or diagonal viewing angles.
d = reading distance (in mm) from window surface to code surface
d
0
= offset (in mm) from center of lens to external window surface
Figure 68 – Reading Distance References
Example:
The FOV for a Matrix 300 412-0xx at a reading distance of 200 mm is:
FOV
H
= 2 [(200 mm + 14 mm) tan (40°/2)] 156 mm
FOV
V
= 2 [(200 mm + 14 mm) tan (32°/2)] 123 mm