Invention Grant
- Patent Title: Asymmetric zones in a Fresnel lens
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Application No.: US15884233Application Date: 2018-01-30
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Publication No.: US10578949B2Publication Date: 2020-03-03
- Inventor: Blake M. Coughenour
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: G03B15/05
- IPC: G03B15/05 ; F21V23/04 ; G02B3/08 ; F21V5/04

Abstract:
A Fresnel lens includes multiple different zones. At least one of the zones may be an asymmetric zone that is radially asymmetric. The asymmetric zone may redirect light received from a light source located within a focal length of the Fresnel lens to a portion of a field of view of an image sensor. In some embodiments, multiple asymmetric zones may be implemented within the same Fresnel lens, which may have different radial asymmetry.
Public/Granted literature
- US20180224715A1 ASYMMETRIC ZONES IN A FRESNEL LENS Public/Granted day:2018-08-09
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