OPTICAL POINTING DEVICE
First Claim
1. An optical pointing device comprising a base and an actuator movable to the base, wherein the actuator comprises a reflective portion on a side facing the base, and wherein the base comprises:
- a light source for emitting light towards the reflective portion of the actuator,a detector comprising one or more detection units for detecting at least a part of the light reflected by the reflective portion of the actuator, anda transparent element arranged between the actuator and at least one of the light source and the one or more detection units, for providing a closed transparent housing for the light source and/or the one or more detection units.
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Accused Products
Abstract
The optical pointing device of the present invention comprises a base and an actuator movable connected to the base, wherein the actuator comprises a reflective portion on a side facing the base, and wherein the base comprises a light source for emitting light towards the reflective portion of the actuator, a detector comprising one of more detection units for detecting at least a part of the light reflected by the reflective portion of the actuator, and a transparent element arranged between the actuator and at least one of the light source and the detection units, for providing a closed transparent housing for the light source and/or the detection units.
23 Citations
15 Claims
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1. An optical pointing device comprising a base and an actuator movable to the base, wherein the actuator comprises a reflective portion on a side facing the base, and wherein the base comprises:
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a light source for emitting light towards the reflective portion of the actuator, a detector comprising one or more detection units for detecting at least a part of the light reflected by the reflective portion of the actuator, and a transparent element arranged between the actuator and at least one of the light source and the one or more detection units, for providing a closed transparent housing for the light source and/or the one or more detection units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15)
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12. A pointing device comprising a base and an actuator movable connected to the base, which base comprises:
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a light source for illuminating the actuator, a detector comprising one or more detection units for detecting light reflected by the actuator, and means to prevent or compensate for detection of a substantially constant background light originating from a non-movable constituent of the pointing device.
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Specification