公开(公告)号：CA3001646A1

公开(公告)日：2017-04-20

申请号：CA3001646

申请日：2016-10-11

Applicant: ESSILOR INT

Inventor： ROUSSEAU BENJAMIN ,  HESLOUIS MELANIE ,  FRICKER SEBASTIEN ,  LAKHCHAF NACER ,  ESCALIER GUILHEM ,  BONNIN THIERRY ,  POULAIN ISABELLE ,  JOLIVET VALERIE ,  WIERZBICKI JULIETTE

IPC: G02C7/02 ,  G02C7/06

Abstract: An ophthalmic progressive addition lens for a presbyopic wearer which has a prescribed far vision mean refractive power a non nil prescribed addition, ADDP, said lens having a far vision reference point, a mean refractive power, ???(a, ß), a module of resulting astigmatism, ASR(a, ß), a meridian line, ML(a, ß), said (a, ß) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (a, ß) joining the center of rotation of the eye, CRE, and the lens, where a is a lowering angle in degree and ß is an azimuth angle in degree, and wherein a lens criterion, CRIT, fulfils following requirement: 0.38 = CRIT = 4.50, where: CRIT = NumeratorCRIT / DenominatorCRIT; NumeratorCRIT = (A1 /A2) + (PPO(aFV, ßFV)/ (100.ADDP)); A1 = a100% - a85%; A2 = a100% - a60%; DenominatorCRIT = [(PeaksMean/ADDp)+(PPO(aFVßFV)/(8.ADDp))]3.

公开(公告)号：CA3001645A1

公开(公告)日：2017-04-20

申请号：CA3001645

申请日：2016-10-11

Applicant: ESSILOR INT

Inventor： ROUSSEAU BENJAMIN ,  HESLOUIS MELANIE ,  FRICKER SEBASTIEN ,  LAKHCHAF NACER ,  ESCALIER GUILHEM ,  BONNIN THIERRY ,  POULAIN ISABELLE ,  JOLIVET VALERIE ,  WIERZBICKI JULIETTE

IPC: G02C7/02 ,  G02C7/06

Abstract: An ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer which has a prescribed far vision mean refractive power a non nil prescribed addition, ADDp, said lens having a far vision reference point, a mean refractive power, PPO(a, ß), a module of resulting astigmatism, ASR(a, ß), a meridian line, ML(a, ß), said (a, ß) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (a, ß) joining the center of rotation of the eye, CRE, and the lens, where a is a lowering angle in degree and ß is an azimuth angle in degree, and wherein a lens criterion, A1/A2, fulfils following requirement: A1/A2 = 0.50, where: A1 = a100% - a85%; A2 = a100% - a60%.

公开(公告)号：CA3001648A1

公开(公告)日：2017-04-20

申请号：CA3001648

申请日：2016-10-11

Applicant: ESSILOR INT

Inventor： ROUSSEAU BENJAMIN ,  ESCALIER GUILHEM ,  POULAIN ISABELLE ,  WIERZBICKI JULIETTE ,  CALIXTE LAURENT ,  LAKHCHAF NACER ,  MARIE SARAH ,  BONNIN THIERRY ,  JOLIVET VALERIE

IPC: G02C7/02 ,  A61B3/113 ,  G02C7/06 ,  G02C13/00

Abstract: Method for determining an optical system of a personalized progressive lens for a given wearer comprising the following consecutive steps: a) providing a mean direction of gaze determined for the wearer in a reference frame tied to the head of the said wearer; b) determination of a target value for at least one optical design parameter as a function of the mean direction of gaze determined in step a); c) calculation of the optical system of the progressive lens by an optical optimization procedure on the basis of target values where the target value of the (or of each) optical design parameter as a function of the mean direction of gaze determined in step b) is a target value.