Title:
LENS HOLDER UNIT
Document Type and Number:
Japanese Patent JPH03182708
Kind Code:
A
Abstract:
PURPOSE:To prevent peeling-off of an adhesive and to prevent deformation and breakage of a lens by sticking the lens to a prescribed position of a lens holder through an elastically deformable part formed in one of the lens and the lens holder, or an elastically deformable member interposed between both of them. CONSTITUTION:A bump reference part 13 formed integrally with a lens holder 12 is provided, and a bump reference part in the X direction and a bump reference part in the Y direction are denoted as 13x and 13y, respectively. In such a state, wall thickness of the bump reference part 13x is thinned, and also, on the outside and the inside of its root, slits 15a, 15b are provided, respectively. In this case, as for a material of the lens holder 12, generally a synthetic resin of P.C, etc., is used, and usually its expansion coefficient is higher than that of glass, therefore, at the time of low temperature environment, the bump reference part 13x contracts in the X direction. In such a way, a deformation stress caused by the contraction in the X direction is absorbed and softened and a crack of a lens 11 and peeling-off of an adhesive agent 14 are avoided.
Inventors:
AZUMA JUN
Application Number:
JP32310489A
Publication Date:
August 08, 1991
Filing Date:
December 13, 1989
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/02; G02B26/10; (IPC1-7): G02B7/02; G02B26/10
Attorney, Agent or Firm:
Hibiya Masahiko