Optical mechanism of an optical mouse
AssigneeSunplus Technology Co., Ltd.
InventorsChing-Pin Wang, Li-Wen Tseng
Life of this patent
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Abstract
An improved optical mechanism of an optical mouse is disclosed. The improved optical mechanism is implemented inside the optical mouse and applies a layer of black coating or a surface processing to surface adjacent to photosensor surroundings to thus form an absorbing layer for absorbing reflecting light not directly projected to a photosensor, thereby advantageously receiving relatively high light points by the photosensor and increasing light-and-shade contrast, i.e., stressing the corresponding light as the light is directly projected to the photosensor and otherwise, the corresponding shade is stressed. Therefore, the performance on determining the mouse image is actually increased.
Claims6
An improved optical mechanism of an optical mouse, implemented inside the optical mouse with a bottom opening, comprising:
- a light device, to provide an incident light;
- a light guiding device, to guide the incident light to pass through the bottom opening and thus project to a reflective plane;
- a photosensor implemented in the optical mouse above the bottom opening, to receive a reflecting light generated on the reflective plane by reflecting the incident light;
- and
- an absorbing layer coated and attached onto a surface around the photosensor, to absorb reflecting light not directly projected to the photosensor.
Dependencies are inferred from the claim text.