Optical pointing device
AssigneeNXP B.V.
InventorKim Phan Le
Life of this patent
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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.
Claims15
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, 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.
A pointing device comprising a base and an actuator movable connected to the base, which base comprises:
- 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.
Dependencies are inferred from the claim text.