Invention Application
- Patent Title: FRESNEL LENS, FRESNEL LENS UNIT, AND HEAD-UP DISPLAY
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Application No.: US16068956Application Date: 2017-01-10
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Publication No.: US20190011611A1Publication Date: 2019-01-10
- Inventor: KEN'ICHI KASAZUMI , TOSHIYA MORI , KOSUKE KUBOTA , MASAHITO OGATA , HIROAKI OKAYAMA , SATOSHI KUZUHARA
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Priority: JP2016-009299 20160120
- International Application: PCT/JP2017/000380 WO 20170110
- Main IPC: G02B3/08
- IPC: G02B3/08 ; G02B27/01
Abstract:
The present invention provides a Fresnel lens that can reduce generation of concentric stray light. The Fresnel lens includes a sawtooth corrugated face that is formed by alternately disposing a first face inclined relative to optical axis A and a second face substantially parallel to optical axis A, and a light shielding mask is formed at a position corresponding to the second face.
Public/Granted literature
- US10670780B2 Fresnel lens, Fresnel lens unit, and head-up display Public/Granted day:2020-06-02
Information query
