×

Video camera unit having an airtight mounting arrangement for an image sensor chip

  • US 5,400,072 A
  • Filed: 02/16/1990
  • Issued: 03/21/1995
  • Est. Priority Date: 12/23/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A video camera unit comprising:

  • a plastic lens unit;

    a cylindrical holder in which said plastic lens unit is housed, said cylindrical holder having a front end and a back end;

    a cylindrical base member including a circular plate having a peripheral edge, and including a cylindrical upright member extending to a predetermined height from the peripheral edge of said circular plate to be integral therewith, said back end of said cylindrical holder being received by said cylindrical base member;

    a solid-state image sensor chip mounted on said plate for receiving light having passed through said plastic lens unit, said height of said cylindrical upright member being such that at least part of said cylindrical upright member adjustably surrounds said back end of said cylindrical holder for focusing adjustment between said plastic lens unit and said solid-state image sensor on said circular plate when said back end of said cylindrical holder is received by said cylindrical base member;

    a cylindrical case having front and back end openings opposed to each other and surrounding said cylindrical holder and said cylindrical upright member of said cylindrical base member, said cylindrical upright member of said cylindrical base member being coupled to said cylindrical case in an airtight structure; and

    a transparent cap mounted on said cylindrical case in an airtight structure to cover said front end opening of said cylindrical case, said back end opening of said cylindrical case being covered with said circular plate of said cylindrical base member, and said lens unit in said cylindrical holder receiving light coming from through said transparent cap, wherein said cylindrical case, said cylindrical base member and said transparent cap cooperate with one another to provide an airtight sealed structure for said plastic lens unit and said solid-state sensor chip.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×