Patent ID: 11899186
Assignee: APPLE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A lens system, comprising:
a plurality of elements arranged along a folded optical axis of the lens system, wherein the plurality of elements includes, in order along the folded optical axis from an object side to an image side:
a first group of elements comprising:
a first refractive lens element with positive refractive power on a first portion of the folded optical axis having a convex object-side surface in a paraxial region; and
a first light folding element that redirects light from the first refractive lens element to a second portion of the folded optical axis;

a second group of elements comprising one or more refractive lens elements on the second portion of the folded optical axis; and
a third group of elements comprising a second light folding element that redirects light from the second portion of the folded optical axis to a sensor on a third portion of the folded optical axis;
wherein the lens system provides a 35 mm equivalent focal length in the range of 70-200 mm and has an F-number of 2.8 or less.