| Subsystem |
Solution |
|
| 1. Casing |
| |
1.1. Side panels made of softer plastic material
improve gripability of mouse |
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| |
1.2. Angled grip-rod enhances ergonomic quality
of mouse |
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| 2. Light source |
| |
2.1. Prism improves illumination uniformity of
working surface |
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| 3. Lens |
| |
3.1. Light-blocking patches flatten illumination
intensity over pixels of image sensor |
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| 4. Image sensor |
| |
4.1. Artificial limiting of optical aperture obtains
unambiguous speckle pattern |
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| 5. Processor |
| |
5.1. Detecting movement of edges of dot pattern
determines relative movement of image pattern across
image sensor |
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| |
5.2. Increase accuracy of the relative motion
measurement |
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| |
5.3. Compare light intensity between pairs of
pixels |
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| 6. Cord |
| |
6.1. Shackle retains mouse cord |
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| |
6.2. Reel assembly adjusts mouse cord length |
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| 7. Mouse button |
| |
7.1. Sliding inset button simplifies cumbersome
dragging operation |
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| 8. Mouse wheel |
| |
8.1. Wheel actuator provides force feedback to
mouse wheel |
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