Optical navigation device with snap fit optical transmission element
First Claim
Patent Images
1. 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 further including a clip structure,a housing element for providing a housing for said illumination source, sensor and optical transmission element,a base including at least one first opening, andwherein the optical transmission element and housing element are attachable together to said base by insertion of the clip structure through said first opening for a snap fit of the optical transmission element and housing element and base together.
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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.
26 Citations
40 Claims
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1. An optical navigation device comprising:
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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 further including a clip structure, a housing element for providing a housing for said illumination source, sensor and optical transmission element, a base including at least one first opening, and wherein the optical transmission element and housing element are attachable together to said base by insertion of the clip structure through said first opening for a snap fit of the optical transmission element and housing element and base together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An optical navigation device comprising:
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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 further including a clip structure, a housing element for providing a housing for said illumination source, sensor and optical transmission element, a base including a first opening, and wherein the optical transmission element and housing element are attachable together to said base by insertion of the clip structure through said first opening for a snap fit of the optical transmission element and housing element and base together; and a second attachment mechanism for attaching together the optical transmission element and housing element prior to final assembly to the base, said attachment being effected by pushing said second attachment mechanism of the optical transmission element into a second opening in said housing element until said second attachment mechanism actuates so as to hold the optical transmission element and housing element together. - View Dependent Claims (21)
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22. An optical navigation device comprising:
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a main housing element, a base 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 the base, is operable to align said optical transmission element to said base, said alignment shaft further including a clip structure configured to extend through an opening in the base and engage an underside surface of the base for a snap fit of the main housing element, base and optical transmission element together; and a second attachment mechanism for attaching together the main housing element and optical transmission element prior to final assembly, said attachment being effected by pushing said optical transmission element into said main housing element until said second attachment mechanism actuates so as to hold the main housing element and optical transmission element together. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification