公开(公告)号：US20090015945A1

公开(公告)日：2009-01-15

申请号：US12143988

申请日：2008-06-23

Applicant: YI-JEN CHEN

Inventor： YI-JEN CHEN

IPC: G02B7/02

CPC classification number: G02B7/021

Abstract: A lens unit includes first and second lenses. The first lens includes a first optically effective portion having a first center aligned with an optical axis, and a first positioning portion surrounding the first optically effective portion. The first lens is provided with a groove unit extending circumferentially about the first center at the first positioning portion. The second lens has a second inner side confronting the first lens, and includes a second optically effective portion having a second center aligned with the optical axis, and a second positioning portion surrounding the second optically effective portion. The second lens is provided with a protrusion unit that extends circumferentially about the second center at the second positioning portion and that is received in the groove unit.

Abstract translation: 透镜单元包括第一透镜和第二透镜。 第一透镜包括具有与光轴对准的第一中心的第一光学有效部分和围绕第一光学有效部分的第一定位部分。 第一透镜设置有在第一定位部分周围围绕第一中心延伸的凹槽单元。 第二透镜具有面对第一透镜的第二内侧，并且包括具有与光轴对准的第二中心的第二光学有效部分和围绕第二光学有效部分的第二定位部。 第二透镜设置有突出单元，该突出单元在第二定位部分周向地围绕第二中心延伸并且被容纳在凹槽单元中。