数码相机用镜头

Lens of digital camera

Abstract

The invention provides a lens for a digital camera including a first barrel, a second barrel and a base. A lens and a ring securing element are arranged in the first barrel. One end of the ring securing element resists the lens. The second barrel includes an upper barrel and a lower barrel. The first barrel and an infrared-cut filter are received in the upper barrel. The other end of the ring securing element resists and fixes the infrared-cut filter between the first barrel and the second barrel. A spacer is arranged in the second barrel and between the upper barrel and the lower barrel, and a through hole is arranged at the center. A step is arranged on the inner periphery of the through hole of the spacer where the infrared-cut filter is placed. The infrared-cut filter is fixed together by the step and the ring securing element. The base and the lower barrel are matched in a height-adjustable manner. The invention fixes the first barrel on the upper barrel of the second barrel by a pressing method, while fixes the infrared-cut filter by clamping the first barrel and the second barrel without gluewater, thereby reducing the producing difficulty of the lens and the producing cost.
本发明提供一种数码相机用镜头,其包括第一筒、第二筒及底座。该第一筒内设有镜片及环型固定件,该环型固定件的一端抵持固定该镜片;该第二筒包括一上筒及一下筒,该上筒内装设有该第一筒及一红外线截止过滤片,所述环型固定件的另一端抵持固定该红外线截止过滤片于该第一筒与该第二筒之间,该第二筒内设有一隔板,且设在该上筒和下筒之间,且其中心设有一通孔,该隔板的通孔内周面上设有一台阶,其放置该红外线截止过滤片,该红外线截止过滤片由该台阶与该环型固定件共同固定;该底座与该下筒以高度可调的方式配合。本发明将该第一筒是由压入方法固定于该第二筒的上筒内,而该红外线截止过滤片是通过第一筒与第二筒夹紧而固定,所以无需使用胶水固定,因此可以降低镜头的制造难度及制造成本。

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CN-2725917-YSeptember 14, 2005谢莉短焦大视场摄像镜头
    US-6870208-B1March 22, 2005Kingpak Technology Inc.Image sensor module

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