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US 5,655,189 AGranted
Image device having thermally stable light emitting/receiving arrays and opposing lenses
AssigneeKYOCERA Corporation
InventorShunji Murano
Life of this patent
Estimating the term…
Abstract
A lens plate is provided with many lenses, and a base plate is provided with many LED arrays and driving ICs arranged at respective opposite ends of the base plate. The lens plate and the base plate are positioned in place relative to each other by spacers. The base plate has a thermal conductive layer and a thermal preserving layer over the layer. Grooves are formed in the preserving layer between the driving ICs and the LED arrays.
Claims18
An image device comprising:
- a lens plate supporting a plurality of lenses,
- a base plate having two main surfaces, one of the main surfaces having arranged thereon light emitting/receiving arrays equal in number to the number of lenses and at least one driving IC for driving the light emitting/receiving arrays, the light emitting/receiving arrays being arranged in one-to-one corresponding relation with the lenses,
- a spacer for positioning the lens plate and the base plate,
- a thermal conductive layer formed on at least one of the main surfaces of the base plate, and
- a thermal preserving layer formed on the thermal conductive layer, wherein the thermal conductive layer is 10 W/m.multidot..degree. C. to 10.sup.3 W/m.multidot..degree. C. in thermal conductivity, and the thermal preserving layer is 0.1.times.10.sup.-6 m.sup.2 /sec to 1.0.times.10.sup.-6 m.sup.2 /sec in thermometric conductivity.
2 more elements
An image device comprising:
- a lens plate supporting a plurality of lenses thereon and having a thermometric conductivity of 0.1.times.10.sup.-6 m.sup.2 /sec to 1.0.times.10.sup.-6 m.sup.2 /sec,
- a base plate having two main surfaces, one of the main surfaces having arranged thereon light emitting/receiving arrays equal in number to the number of lenses and at least one driving IC for driving the light emitting/receiving arrays, the light emitting/receiving arrays being arranged in one-to-one corresponding relation with the lenses, and
- a spacer for positioning the lens plate and the base plate in place.
Dependencies are inferred from the claim text.