Sae Magnetics (h.k.) Limited

Tak Kit Dennis Tong

Wai Hung

Xiaoming Yu

Francis Guillen Gamboa

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.

Optical navigation module and mobile electronic appliance using optical navigation module

An optical navigation module for receiving control from an object disposed on an operation plane is provided. The optical navigation module includes a substrate defining a base plane that is perpendicular to the operation plane; a light source installed on the base plane of the substrate and configured to emit light to a side of the substrate; an optical structure installed at the side of the substrate; a light sensor installed on the base plane of the substrate; a light shield installed on the base plane of the substrate spatially separating the light source and the light sensor so that light emitted by the light source is not directly shed on the light sensor, the light shield having an aperture formed thereon; and a tactile switch for executing a command installed at a side of the light source that is opposite to the side facing the operation plane. The optical structure is configured to guide the light emitted from the light source to the object so that at least a portion of the light scattered by the object passes to the light sensor through the aperture on the light shield and forms a light intensity pattern on the light sensor.

Growing community of inventors

Hong Kong, China

Tak Kit Dennis Tong