Folded telephoto camera lens system

折叠式摄远照相机透镜系统

Abstract

A folded telephoto lens system may include multiple lenses with refractive power and a light path folding element. Light entering the camera through lens(es) on a first path is refracted to the folding element, which changes direction of the light on to a second path with lens(es) that refract the light to form an image plane at a photosensor. At least one of the object side and image side surfaces of at least one of the lens elements may be aspheric. Total track length (TTL) of the lens system may be 14.0 mm or less. The lens system may be configured so that the telephoto ration (TTL/f) is less than or equal to 1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the optical elements may be selected to achieve quality optical performance and high image resolution in a small form factor camera.
折叠式摄远照相机透镜系统可以包括具有折光力的多个透镜和光路折叠元件。经过一个或多个透镜进入该照相机的光在第一路径上被折射到折叠元件,该折叠元件将光的方向改变到第二路径上,该第二路径具有折射光以在光传感器处形成像平面的一个或多个透镜。至少一个透镜元件的对象侧和像侧表面中的至少一个可以是非球面的。透镜系统的总光程(TTL)可以是14.0毫米以下。该透镜系统可以被配置以使得该摄远定量(TTL/f)小于或者等于1.0。光学元件的材料、曲率半径、形状、尺寸、间隔和非球面系数可以被选择,以在小形状因数照相机中实现优质光学性能和高图像分辨率。

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