Vehicular camera with thermal compensating means

A vehicular camera includes a camera housing having a first portion and a second portion joined to the first portion. The first portion of the camera housing accommodates a lens and has an attaching portion having a first coefficient of thermal expansion (CTE). A circuit board includes circuitry dis...

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Bibliographische Detailangaben
Hauptverfasser:	Conger, Jonathan D, Byrne, Steven V
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	A vehicular camera includes a camera housing having a first portion and a second portion joined to the first portion. The first portion of the camera housing accommodates a lens and has an attaching portion having a first coefficient of thermal expansion (CTE). A circuit board includes circuitry disposed at a circuit board substrate that has a second CTE that is different from the first CTE. The circuitry includes an imager. The circuit board substrate is attached at the attaching portion of the first portion of the camera housing. When the vehicular camera is operated at an operating temperature greater than 50 degrees C., the attaching portion expands a greater degree than the circuit board substrate. When the vehicular camera is operated at an operating temperature below −20 degrees C., the attaching portion contracts a greater degree than the circuit board substrate.