PixArt Imaging Inc.
High-Performance Optical Mouse Sensor
Typical Performance Characteristics
Mean Resolution vs. Z (White Paper)
2000
1800
1600
1400
1200
1000
800
White Paper
Manila
Burl
Z
Black Walnut
Black Copy
DOF
DOF
600
OPERATING REGION
400
200
0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
-0.8 -0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
Distance from Nominal Focus (mm)
Figure 11. Mean Resolution vs. Z (White Paper)
Typical Path Deviation
Largest Single Perpendicular Deviation From A Straight Line At 45 Degrees
Path length = 4 inches; Speed = 6 ips; Resolution = 1600 cpi
50
45
40
35
30
25
20
15
10
5
White Paper
Manila
Burl
Black Walnut
Black Copy
0
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
Distance From Lens Reference Plane To Navigation Surface (mm)
Relationship of mouse count to distance = m (mouse count) / n (cpi)
eg: Deviation of 7 mouse count = 7/1600 = 0.004375 inch ~ 0.004 inch
where m = 7, n = 1600
Figure 12. Average error vs. Distance (mm)
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
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PIXART [ PIXART IMAGING INC. ]
