PixArt Imaging Inc.
Typical Performance Characteristics
Mean Resolution vs. Z (White Paper)
2000
1800
1600
1400
Resolution (counts/inch)
1200
1000
800
600
400
200
0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
-0.
8
-0.
7
-0.
6
-0.
5
-0.
4
-0.
3
-0.
2
-0.
1
0.8
White Paper
Manila
Burl
Z
DOF
DOF
Black Walnut
Black Copy
OPERATING REGION
Distance from Nominal Focus (mm)
Figure 11. Mean Resolution vs. Z (White Paper)
50
Maximum Distance (Mouse Count)
45
40
35
30
25
20
15
10
5
0
1.6
Typical Path Deviation
Largest Single Perpendicular Deviation From A Straight Line At 45 Degrees
Path length = 4 inches; Speed = 6 ips; Resolution = 1600 cpi
White Paper
Manila
Burl
Black Walnut
Black Copy
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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13
PixArt Imaging Inc.
E-mail:
fae_service@pixart.com.tw
PIXART [ PIXART IMAGING INC. ]
