Konica Minolta Advanced Layers, Inc.

Konica Minolta, Inc.

Takashi Fujii

Hajime Mori

Takemi Miyazaki

Akihiko Matsumoto

Image pickup lens unit () comprises, in order to minimize the positional displacement between an optical system and a holder therefor, compound lens (), holder () which houses compound lens () therein, and cover () which covers compound lens (). In holder (), there is formed peripheral section () which restricts the movement of compound lens () in the XY-direction. In cover (), there is formed projecting section () which restricts the movement of compound lens () in the Z-direction.

Image pickup lens unit

Method for manufacturing an image pickup lens unit. In the second molding step, by performing additional molding with respect to a first holder memberin which a lenshas been inserted, the separation of the lenscan be prevented and, at the same time, a second holder memberwelded to the first holder membercan be molded. Therefore, molding of the second holder memberand the process of joining the second holder member with the first holder membercan be performed together. Additionally, when the lensis fixed from the side of a third molding portionof a second mold, the lensand the third molding portionare brought in contact by an elastic biasing force, thereby reducing breakage or deformation of the lens

Method for production imaging lens unit

An object is to provide a method for manufacturing an image pickup lens unit which can form a holder member with a small number of components, and can avoid generation or a ghost or flare caused by a positioning shape, an appearance problem, deterioration of dimension accuracy. In an installing step, since a lensis positioned by one pressing member (protrusion)of protrusionsandwhich are a pair of pressing members disposed in a position corresponding to a pair of openings OPand OPby moldsand, it is possible to reliably fix the lensin the moldsandin a state of not affecting to a shape of a holder memberwithout interrupting the molding of the holder member. Thus, it is possible to avoid deterioration of the dimension accuracy due to the remaining large positioning shape on the holder member. In addition, since the holder memberis integrally molded, it is possible to avoid an increase of the number of components used for the assembling the holder or complicated component shapes of a connecting portion.

Image pickup lens unit manufacturing method and image pickup lens unit

An image pickup lens unit, in which a holder body and a cover can be easily connected together, without additional components and a resin flow path for the connection. A lensis positioned in a first holder memberwhich remains in a mold. A second holder memberfor preventing the lensfrom falling off is molded such that it is welded to the first holder member having the lenspositioned therein. This facilitates molding of the second holder memberand joining of the second holder memberto the first holder memberat the same time. Since there is no need to provide a resin flow path for joining the first holder memberand the second holder membertogether, the image pickup lens unit can be made small in size.

Disclosed is an imaging lens unit that prevents the detachment of a cover from a holder. The imaging lens unit () is provided with a combination lens () and an external covering that is formed from at least the holder () and the cover () and covers the combination lens () from the outside, wherein the holder () and the cover () are connected by means of fitting members () that are integrally formed from a resin material and have, on both ends, a first fitting () that fits with a section of the holder () and a second fitting () that fits with a section of the cover ().

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Hachioji, Japan

Takashi Fujii