Sensing structure for optic input
First Claim
1. A sensing structure for optic inputs adapted to be positioned adjacent to an external object, the sensing structure comprising a light source for emitting a light toward the external object, the light reflected by the external object toward a lens and focused by the lens onto a sensor chip to be detected thereby, wherein the light source is arranged to directly project the light onto the external object to be reflected thereby.
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Accused Products
Abstract
A sensing structure for optic inputs is embodied in a computer mouse or a touch pad. The sensing structure includes a light source for emitting a light toward an operation surface on which the mouse moves or a finger moving on the touch pad. The light is reflected by the operation surface or the finger toward a lens and is focused by the lens onto a sensor chip to be detected thereby. The light source is located adjacent the lens whereby light from the light source can be directly projected onto the operation surface or the finger. The light does not need to travel through transparent body to be redirected thereby toward the operation surface. This alleviates attenuation of the light from the light source and detection sensitivity and correctness are enhanced.
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Citations
7 Claims
- 1. A sensing structure for optic inputs adapted to be positioned adjacent to an external object, the sensing structure comprising a light source for emitting a light toward the external object, the light reflected by the external object toward a lens and focused by the lens onto a sensor chip to be detected thereby, wherein the light source is arranged to directly project the light onto the external object to be reflected thereby.
Specification