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:
Aug. 26, 2014
Filed:
Dec. 13, 2010
Tak Kit Dennis Tong, Hong Kong, HK;
Wai Vincent Hung, Hong Kong, HK;
Xiaoming Yvonne Yu, Hong Kong, HK;
Tak Kit Dennis Tong, Hong Kong, HK;
Wai Vincent Hung, Hong Kong, HK;
Xiaoming Yvonne Yu, Hong Kong, HK;
SAE Magnetics (H.K.) Ltd., Hong Kong, HK;
Abstract
An optical navigation module includes a light source, a light transmission window having a navigation surface, a first light shield configured for blocking the ambient light and absorbing the scattered light, a sensor configured for detecting light from the light transmission window and a second light shield located between the light source and the sensor and configured for blocking the direct light from the light source to the sensor. The light transmission window includes at least one refraction surface. The refraction surface is in the light path from the light source to the sensor.