Reading Features; Fov Calculation - Datalogic Matrix 120 Product Reference Manual

FOV Calculation

Use the data in the following table to calculate the FOV for your application,
referring to
Model
Matrix 120
210-xxx
(WVGA)
Matrix 120
310-XXX
(MP)
Matrix 120
311-xxx
(MP+WA)
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
76
Figure 58 - and the formula below.
View Angle
d
0
Horizontal
8 mm 39°
8 mm 41°
8 mm 52°
FOV = 2 [ (d + d
x
Chapter 6

Reading Features

View Angle View Angle
Vertical Diagonal
26° 46°
32° 49°
40° 63°
) tan ( /2) ]
0 x
Min Read-
ing Distance
mm
25
30
30
Matrix 120