公开(公告)号：US10185159B2

公开(公告)日：2019-01-22

申请号：US15513394

申请日：2015-09-24

Applicant: HOYA LENS THAILAND LTD.

Inventor： Tomohiro Odaira ,  Yasunori Izawa

IPC: G02C7/02 ,  G02C7/06

Abstract: Provided is a technology relating to a progressive power lens 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 power exceeding zero is added to a prescription power of the specific region so that a power corresponding to a predetermined target distance which is a distance between the near distance and the far distance is provided at a predetermined part of the intermediate region.

公开(公告)号：US12099260B2

公开(公告)日：2024-09-24

申请号：US17280953

申请日：2019-09-27

Applicant: HOYA LENS THAILAND LTD.

Inventor： Hiroshi Asami ,  Yasunori Izawa ,  Tadashi Kaga

IPC: G02C7/06

CPC classification number: G02C7/063

Abstract: A progressive addition lens includes: a near portion for viewing a near distance, a distance portion for viewing a distance farther than the near distance, and an intermediate portion between the near portion and the distance portion and having a progressive refraction function. A transmission astigmatism is added to at least the near portion and the intermediate portion, and in the near portion and the intermediate portion to which the transmission astigmatism is added, after subtracting the refractive power for astigmatism correction, the progressive addition lens further includes a portion where the amount of vertical refractive power is greater than the amount of horizontal refractive power.

公开(公告)号：US10203520B2

公开(公告)日：2019-02-12

申请号：US15513366

申请日：2015-09-24

Applicant: HOYA LENS THAILAND LTD.

Inventor： Tomohiro Odaira ,  Yasunori Izawa

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.

公开(公告)号：US12140821B2

公开(公告)日：2024-11-12

申请号：US17280997

申请日：2019-09-27

Applicant: HOYA LENS THAILAND LTD.

Inventor： Hiroshi Asami ,  Yasunori Izawa ,  Tadashi Kaga

IPC: G02C7/06 ,  G02C7/02

Abstract: A progressive addition lens and the related technology, the progressive addition lens including a near portion for viewing a near distance, a distance portion for viewing a distance farther than the near distance, and an intermediate portion between the near portion and the distance portion and having a progressive refraction function, in which the transmission astigmatism is added to the near portion and the intermediate portion of the distance portion, the near portion, and the intermediate portion, and in the near portion and the intermediate portion to which the transmission astigmatism is added, the progressive addition lens further includes a portion where an amount of horizontal refractive power is greater than an amount of vertical refractive power after subtracting the refractive power for astigmatism correction.

公开(公告)号：US09772511B2

公开(公告)日：2017-09-26

申请号：US15023482

申请日：2014-09-19

Applicant: Hoya Lens Thailand Ltd.

Inventor： Yasunori Izawa ,  Tomohiro Odaira

IPC: G02C7/02 ,  G02C7/06

CPC classification number: G02C7/065 ,  G02C7/024 ,  G02C7/028 ,  G02C7/061 ,  G02C7/063 ,  G02C7/066 ,  G02C2202/08

Abstract: A spectacle lens is provided belonging to a series of spectacle lenses having each of first refractive power and second refractive power in common, where a progressive region length, which is a length along a meridian within a progressive region, is shorter than a predetermined reference spectacle lens belonging to the series of spectacle lenses, and a designed maximum differential value where a normalized addition refractive power distribution in the progressive region is differentiated is caused to be close to a reference maximum differential value where a normalized addition refractive power distribution in the progressive region of the reference spectacle lens is differentiated.