Instruction manual

MATRIX 300™ REFERENCE MANUAL
80
6
6 READING FEATURES
6.1 FOV CALCULATION
Referring to Figure 74 and the formula below, use the data in the following table to calculate
the FOV for your application.
Model
Lens
d
0
Viewing Angle
Horizontal
Viewing Angle
Vertical
Viewing Angle
Diagonal
Min Reading Distance
mm
Matrix 300 4x2-0xx
9 mm liquid
14 mm
40°
32°
50°
22
Matrix 300 4x1-0xx
6 mm fixed
7 mm
66°
55°
80°
35
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 (from window surface to code surface)
d
0
= reading distance offset (from center of lens to window surface)
FOV
plane

d
0
d
Figure 74 – 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
NOTE: The following diagrams are given for typical performance at 25°C
using high quality grade A symbols according to ISO/IEC 15416 (1D code)
and ISO/IEC 15415 (2D code) print quality test specifications. Testing should
be performed with actual application codes in order to maximize the
application performance.