Optical navigation device
AssigneeSTMicroelectronics (Research & Development) Limited
InventorsEwan Findlay, Douglas Stuart Brodie
Life of this patent
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Abstract
An optical navigation device includes an optical transmission element, operable in use to transmit light from an illumination source to a sensor via a mousing surface, and a housing unit. The optical transmission element may have an alignment shaft. Ideally the optical transmission element and housing unit are assembled to a substrate by snap-fit. The alignment shaft ensures that the optics are properly aligned to the substrate and the light source and sensor thereon.
Claims43
An optical navigation device comprising:
- an optical transmission element which provides a mousing surface and which, in use, transmits radiation from an illumination source to a sensor via said mousing surface, and
- a housing element for providing a housing for said illumination source, sensor and optical transmission element.
An optical navigation device comprising:
- a main housing element and an optical transmission element,
- said optical transmission element being operable in use to transmit light from an illumination source to a sensor via a mousing surface,
- said optical transmission element comprising an alignment shaft which, when assembling said optical transmission element and said main housing element to a base, is operable to align said optical transmission element to said base.
An optical navigation device comprising:
- an optical transmission element which provides a mousing surface and which, in use, transmits radiation from an illumination source to a sensor via said mousing surface, and
- a main housing element, for providing a housing for said illumination source, sensor and optical transmission element such that said illumination source and sensor are housed separately from said optical transmission element.
Dependencies are inferred from the claim text.