Invention Grant
- Patent Title: Progressive power lens group
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Application No.: US15513366Application Date: 2015-09-24
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Publication No.: US10203520B2Publication Date: 2019-02-12
- Inventor: Tomohiro Odaira , Yasunori Izawa
- Applicant: HOYA LENS THAILAND LTD.
- Applicant Address: TH Patumthani
- Assignee: HOYA LENS THAILAND LTD.
- Current Assignee: HOYA LENS THAILAND LTD.
- Current Assignee Address: TH Patumthani
- Agency: Oliff PLC
- Priority: JP2014-192242 20140922
- International Application: PCT/JP2015/076986 WO 20150924
- International Announcement: WO2016/047713 WO 20160331
- Main IPC: G02C7/02
- IPC: G02C7/02 ; G02C7/06

Abstract:
A progressive power lens group includes a plurality of progressive power lenses including a near region for seeing an object at a near distance, a specific region for seeing an object at a far distance in relation to the near distance, and an intermediate region provided as a region between the specific region and the near region and having a power progressing from the specific region toward the near region, in which a near power at the near region is common in the plurality of progressive power lenses and a power corresponding to a predetermined common target distance which is a distance between the near distance and the far distance is provided at a predetermined part of the intermediate region.
Public/Granted literature
- US20170299889A1 PROGRESSIVE POWER LENS GROUP Public/Granted day:2017-10-19
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