Invention Grant
- Patent Title: Spectacle lens and spectacles
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Application No.: US16364962Application Date: 2019-03-26
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Publication No.: US11262601B2Publication Date: 2022-03-01
- Inventor: Yoichi Ogo
- Applicant: HOYA LENS THAILAND LTD.
- Applicant Address: TH Pathumthani
- Assignee: HOYA LENS THAILAND LTD.
- Current Assignee: HOYA LENS THAILAND LTD.
- Current Assignee Address: TH Pathumthani
- Agency: Oliff PLC
- Priority: JPJP2017-191691 20170929
- Main IPC: G02C7/10
- IPC: G02C7/10 ; G02C7/08 ; G02B5/28 ; G02B1/115 ; G02B1/04 ; G02B5/22

Abstract:
The spectacle lens includes a lens substrate including a blue light absorbing compound, and a multilayer film including a metal layer having a film thickness of 1.0 nm to 10.0 nm, wherein a blue light cut ratio is 35.0% or more, an average reflectance in a wavelength range of 400 nm to 500 nm on an object-side surface obtained by measurement from the object side is in a range of 15.00% to 25.00%, and an average reflectance in a wavelength range of 400 nm to 500 nm on an eyeball-side surface obtained by measurement from the object side is less than 2.00%.
Public/Granted literature
- US20190219842A1 SPECTACLE LENS AND SPECTACLES Public/Granted day:2019-07-18
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