公开(公告)号：US11231608B2

公开(公告)日：2022-01-25

申请号：US16341992

申请日：2016-11-18

Applicant: NIKON CORPORATION ,  Essilor International

Inventor： Eva Oton ,  Fuyuhiko Inoue ,  Toshiki Nakano ,  Estelle Netter ,  Yukiko Katayama

IPC: G02F1/1334 ,  G02F1/137 ,  C09K19/02 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/139

Abstract: An optical component including a first layer, a second layer and a bulk sandwiched between the first and second layers, where the bulk is formed by a composition containing a liquid crystal material which is in a blue phase. At least one of the first and second layers has, toward the bulk, an alignment layer. The blue phase of the liquid crystal material exhibits a uniform organization in three directions (Ox, Oy, Oz) in at least 80% of the volume of the bulk, the liquid crystal material being stabilized in the blue phase at least over the temperatures ranging from 10° C. to 35° C.

公开(公告)号：US10761383B2

公开(公告)日：2020-09-01

申请号：US16385757

申请日：2019-04-16

Applicant: ESSILOR INTERNATIONAL ,  NIKON CORPORATION

Inventor： Estelle Netter

IPC: G02F1/1347 ,  G02F1/133 ,  G02F1/13363 ,  G02F1/137

Abstract: A phase modulator includes; a first liquid crystal element and a second liquid crystal element, wherein: in the state in which no voltage is applied to the first liquid crystal element nor to the second liquid crystal element, both of the first liquid crystal material and the second liquid crystal material show optical isotropy; and in the state in which a predetermined range of voltage is applied both to the first liquid crystal element and to the second liquid crystal element, the first liquid crystal material shows optically uniaxial anisotropy with a first ordinary refractive index and a first extraordinary refractive index which is larger than the first ordinary refractive index, and the second liquid crystal material shows optically uniaxial anisotropy with a second ordinary refractive index and a second extraordinary refractive index which is smaller than the second ordinary refractive index.

公开(公告)号：US11625899B2

公开(公告)日：2023-04-11

申请号：US17297578

申请日：2019-11-18

Applicant: Essilor International

Inventor： Julien Andoche ,  Estelle Netter

IPC: G06T19/00 ,  G06T7/70 ,  G06V40/16

Abstract: A server includes processing circuitry configured to receive one or more images, the one or more images including one or more representations of people. Additionally, the processing circuitry is configured to apply a neural network to the one or more images, wherein the neural network classifies at least one aesthetic component of each image of the one or more images, an aesthetic component score being generated for each image in the one or more images. Further, the processing circuitry is configured to generate a user eyewear equipment profile for a user, the user being matched to a persona from a personae database, each persona in the personae database being linked to one or more persona eyewear equipment profiles, the one or more persona eyewear equipment profiles being based on the aesthetic component score, and select eyewear equipment for the user based on the generated user eyewear equipment profile.

公开(公告)号：US11287714B2

公开(公告)日：2022-03-29

申请号：US16500278

申请日：2017-04-03

Applicant: NIKON CORPORATION ,  Essilor International

Inventor： Eva Oton ,  Estelle Netter

IPC: G02F1/137 ,  G02C7/10 ,  G02F1/1337 ,  G02F1/1343

Abstract: A wavelength tunable optical filter and a method for switching and adjusting the wavelength tunable optical filter. The optical filter includes a liquid crystal cell comprising a cholesteric liquid crystal mixture inserted between two electrodes configured to apply a voltage, the cholesteric liquid crystal mixture comprising a chiral dopant and a dual frequency liquid crystal host material, the liquid crystal cell having a reference Bragg reflection wavelength in the spectral range between 300 nm and 900 nm, and the liquid crystal cell having a first Bragg reflection wavelength, when the applied voltage is modulated at a frequency comprised in an intermediate frequency range which is above a cross-over frequency and below a high frequency limit, the first Bragg reflection wavelength being different from the reference Bragg reflection wavelength and the cholesteric liquid crystal mixture being non-scattering both in the reference Bragg reflection mode and in the first Bragg reflection mode.