Invention Grant
- Patent Title: Power prism for folded lenses
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Application No.: US16551521Application Date: 2019-08-26
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Publication No.: US11340388B2Publication Date: 2022-05-24
- Inventor: Norimichi Shigemitsu , Kazuya Fujita , Hideki Tanaka , Shuo Wei Huang
- 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: G02B5/04
- IPC: G02B5/04 ; G02B7/02

Abstract:
An optical power prism that may be used in folded lens systems that consists of a glass prism and a glass lens attached to a surface of the prism using a thin layer of optical glue or by optical contact. The glass lens does not have a flange and thus the prism can be smaller than prisms used in conventional power prisms with the same lens effective area, thus reducing the Z-height of the power prism when compared to conventional power prisms. An optical glass may be used for the lens that has a higher refractive index than can be provided by optical plastic which allows the lens to be thinner than plastic lenses. The lenses may be formed by molding a glass wafer to form lens shapes on a first surface of the wafer; the molded wafer is then ground from a second surface to singulate the lenses.
Public/Granted literature
- US20200073028A1 POWER PRISM FOR FOLDED LENSES Public/Granted day:2020-03-05
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