OPTICAL MOUSE
First Claim
1. An optical mouse, comprising:
- a light source configured to emit light having a wavelength in or near a blue region of a visible light spectrum toward a tracking surface at an oblique angle to the tracking surface;
an image sensor positioned to detect non-specular reflection of the light from the tracking surface;
one or more lenses configured to form a focused image of the tracking surface on the image sensor at the wavelength in or near the blue region of the visible light spectrum emitted by the light source; and
a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data.
2 Assignments
0 Petitions
Accused Products
Abstract
Various embodiments of optical mice are disclosed. One embodiment comprises a light source configured to emit light having a wavelength in or near a blue region of a visible light spectrum toward a tracking surface at an oblique angle to the tracking surface, an image sensor positioned to detect non-specular reflection of the light from the tracking surface, and one or more lenses configured to form a focused image of the tracking surface on the image sensor at the wavelength in or near the blue region of the visible light spectrum emitted by the light source. Further, the optical mouse comprises a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data.
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Citations
20 Claims
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1. An optical mouse, comprising:
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a light source configured to emit light having a wavelength in or near a blue region of a visible light spectrum toward a tracking surface at an oblique angle to the tracking surface; an image sensor positioned to detect non-specular reflection of the light from the tracking surface; one or more lenses configured to form a focused image of the tracking surface on the image sensor at the wavelength in or near the blue region of the visible light spectrum emitted by the light source; and a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical mouse, comprising:
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a light source configured to emit light having a wavelength of between 400-490 nm toward a tracking surface at an angle of between 0 and 45 degrees relative to a plane of the tracking surface; an image sensor positioned at an angle of between −
10 and 10 degrees relative to a tracking surface normal;one or more lenses configured to form a focused image of the tracking surface on the image sensor at the wavelength of the light emitted by the light source; and a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of tracking motion of an optical mouse, comprising:
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directing an incident beam of light having a wavelength in or near a blue region of a visible light spectrum toward a tracking surface at an oblique angle relative to the tracking surface; forming a focused image of the tracking surface on an image sensor positioned to detect non-specular reflection of the light from the tracking surface; capturing a plurality of time-sequenced images of the tracking surface; locating a tracking feature in the plurality of time-sequenced images of the tracking surface; and tracking changes in location of the tracking feature across the plurality of time-sequenced images of the tracking surface. - View Dependent Claims (17, 18, 19, 20)
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Specification