Method of assembling camera for vehicle vision system

  • US 10,264,168 B2
  • Filed: 01/24/2018
  • Issued: 04/16/2019
  • Est. Priority Date: 11/07/2013
  • Status: Active Grant
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First Claim
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1. A method of assembling a vehicular camera suitable for vehicular use, said method comprising:

  • providing a lens comprising a plurality of optical elements, wherein the lens is accommodated in a lens barrel;

    providing a lens holder having a lens barrel mounting portion and an attaching portion;

    providing a printed circuit board, wherein an imager is disposed at the printed circuit board, and wherein an electrical connector extends from the printed circuit board;

    attaching the printed circuit board at the lens holder with the imager aligned with the lens barrel mounting portion;

    providing an adhesive in its uncured state;

    inserting the lens barrel partially into the lens barrel mounting portion;

    dispensing the uncured adhesive so as to establish a layer of uncured adhesive between the lens barrel and the lens barrel mounting portion of the lens holder;

    bringing the lens into focus with the imager and optically center-aligning the lens with the imager;

    with the lens in focus with the imager and optically center-aligned therewith, initially curing the adhesive to an initially-cured state in an initial radiation curing process that comprises exposure to UV light for a first period of time;

    wherein the initially-cured adhesive, as cured via the initial radiation curing process, holds the lens in focus with the imager and optically center-aligned therewith;

    after the initial radiation curing process, further curing the initially-cured adhesive to a further-cured state in a secondary curing process;

    wherein the further-cured state is achieved within a second period of time;

    wherein the second period of time is longer than the first period of time;

    wherein, when further cured via the secondary curing process, the further-cured adhesive maintains focus and optical center-alignment of the lens with the imager for use of the camera in a vehicle;

    after further curing the initially-cured adhesive to a further-cured state, mounting the lens holder at a structure; and

    after further curing the initially-cured adhesive to a further-cured state, electrically connecting the electrical connector of the printed circuit board to electrical circuitry at the structure.

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