Patent ID: 8243016

Claim:
An optical pointing device comprising: a cover comprising a transparent part where light passes through; a sensing component installed inside the cover, the sensing component comprising: a light emitting module for emitting light; a light sensing module for sensing light transmitted from the transparent part so as to generate a corresponding sensing signal; and a substrate for supporting the light emitting module and the light sensing module; and a light guiding component installed between the sensing component and the cover, the light guiding component comprising: a reflecting part for reflecting the light emitted from the light emitting module to the transparent part; a condensing part integrated with the reflecting part monolithically for condensing light transmitted from the transparent part to the light sensing module, the condensing part being a prism structure, two surfaces of the condensing part respectively facing the transparent part of the cover and the light sensing module being convex surfaces, a surface of the cover facing the condensing part being a concave surface, a chamber being formed between the condensing part and the cover, and a chamber being formed between the condensing part and the sensing component; and a fixing structure monolithically integrated with the reflecting part and the condensing part to form a single integral and gaplessly continuous optical structure, for combining with the cover and the substrate so as to fix the light guiding component and the sensing component inside the cover; wherein the light emitted from the light emitting module is reflected to the transparent part by the reflecting part and then reflected back to the transparent part and the condensing part by a shelter disposed above the cover, and the condensing part is for condensing the light transmitted from the transparent part to the light sensing module.