76
Matrix 120
Chapter 6
Reading Features
FOV Calculation
Use the data in the following table to calculate the FOV for your application,
referring to
Figure 58 - 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
Model
d
0
View Angle
Horizontal
View Angle
Vertical
View Angle
Diagonal
Min Read-
ing Distance
mm
Matrix 120
210-xxx
(WVGA)
8 mm 39° 26° 46° 25
Matrix 120
310-XXX
(MP)
8 mm 41° 32° 49° 30
Matrix 120
311-xxx
(MP+WA)
8 mm 52° 40° 63° 30
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