The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Dec. 13, 2010
Wai Hung, Hong Kong, CN;
Francis Guillen Gamboa, Hong Kong, CN;
Xiaoming Yu, Hong Kong, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
An optical navigation apparatus comprises a substrate with a sensor integrated circuit and an infrared source formed thereon; a sensor cover shielding the sensor integrated circuit and the infrared source; at least one visible light source formed outside the sensor cover and electrically connected with the substrate; a light guide located outside the sensor cover and covering the visible light source; and an outer housing covering the light guide and the substrate, and the outer housing comprises an infrared window and a side wall capable of guiding visible light towards and illuminating a region of the outer housing. In such an arrangement, the outer housing of the present invention is not only used as a casing for protection, but also served as light guide and distribution structure to reflect and re-distribute light sufficiently to achieve a uniform illuminated character shape.