公开(公告)号：US20210301060A1

公开(公告)日：2021-09-30

申请号：US17217732

申请日：2021-03-30

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yuko ARAI ,  Takumi NAGASAWA ,  Masahito IGARI

IPC: C08G18/10 ,  C08G18/80 ,  G02B1/04 ,  C08G18/38 ,  C08K5/50 ,  C08K5/521 ,  C08K5/524

Abstract: The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, the method including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the first polythiol and the second polythiol are mixed in advance to prepare a polythiol mixture, and then the polythiol mixture is mixed with the polyisocyanate.

公开(公告)号：US20210271108A1

公开(公告)日：2021-09-02

申请号：US17256438

申请日：2019-06-28

Applicant: HOYA LENS THAILAND LTD.

Inventor： Kazuma KOZU

IPC: G02C7/02 ,  G02C7/06

Abstract: A progressive addition lens design method includes adjusting a lens surface shape to bring a difference between a first state when an object at a first location in a wearer's front and on the wearer's medial plane is visually recognized and a second state when an object at a second location positioned on the first location side in the horizontal direction at a constant height in the vertical direction is visually recognized in a plane parallel to a frontal plane and includes the first location at the time the lens is worn closer to a difference between a third state when an object at the first location is visually recognized and a fourth state when an object at the second location is visually recognized at the time a reference single focal lens corresponding to the progressive addition lens is worn or at the time equivalent to a naked eye.

公开(公告)号：US11072097B2

公开(公告)日：2021-07-27

申请号：US16019208

申请日：2018-06-26

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yoshio Sano ,  Hiroshi Shimizu

IPC: B29C33/38 ,  B29D11/00 ,  B29K105/00

Abstract: A lens-mold producing method includes a position and posture determining step of specifying positions and postures, in space coordinates, of a first mold having a molding surface for forming one optical surface of a lens and a second mold having a molding surface for forming the other optical surface, a mold holding step of rotating and/or inclining, based on the positions and postures in the space coordinates, at least one of the first and second mold, maintaining a rotation angle and/or an inclination angle of a reference plane of the first mold with respect to a reference plane of the second mold, and holding the first and second mold, and an assembling step of arranging the molding surfaces of the first and second mold so as to face each other, fixing outer peripheries of the first mold and the second mold, and assembling a lens mold.

公开(公告)号：US20210206902A1

公开(公告)日：2021-07-08

申请号：US17210705

申请日：2021-03-24

Applicant: HOYA LENS THAILAND LTD.

Inventor： Tomofumi OHNISHI ,  Yoshio SANO

IPC: C08G18/08 ,  C08G18/38 ,  G02B1/04

Abstract: A method for producing an optical component resin including a first pressure-reduction step in which a mixture containing a polyisocyanate component and a polythiol component is disposed under a reduced pressure, a second pressure-reduction step in which a release agent is added after the first pressure-reduction step, and the mixture is further disposed under a reduced pressure, and a polymerization step in which the mixture is polymerized.

公开(公告)号：US10752726B2

公开(公告)日：2020-08-25

申请号：US15992839

申请日：2018-05-30

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yukio Kageyama ,  Masahisa Kousaka ,  Tomofumi Ohnishi

IPC: C08L75/04 ,  C08G18/38 ,  G02B1/04 ,  C08G18/24 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  G02B1/08 ,  G02C7/02

Abstract: To provide a resin composition having a good slightly bluish color tone, a spectacle lens including a base material made of the resin composition, and a method for producing the resin composition.Provided is a resin composition obtained by polymerizing a polymerizable composition including a polyisocyanate compound and a polythiol compound. The polymerizable composition includes a dye L having an absorption maximum wavelength of 550 nm or more and 600 nm or less in a toluene solution of 20 ppm by mass, and a dye S having an absorption maximum wavelength of 500 nm or more and less than 550 nm in a toluene solution of 20 ppm by mass. A mass ratio [(mass of dye L)/(mass of dye S)] of the dye L to the dye S is 5 or more and 500 or less.

公开(公告)号：US10745539B2

公开(公告)日：2020-08-18

申请号：US16222577

申请日：2018-12-17

Applicant: HOYA LENS THAILAND LTD.

Inventor： Masahisa Kousaka ,  Natsumi Tasaki

IPC: C08L101/00 ,  G02B1/04 ,  G02B5/22 ,  C08K5/3475

Abstract: To provide a transparent plastic substrate having a high cut rate of blue light, a plastic lens and a transparent plastic member. A transparent plastic substrate containing a benzotriazole compound represented by the formula (1), a plastic lens containing the transparent plastic substrate, and a transparent plastic member containing a benzotriazole compound represented by the formula (1).

公开(公告)号：US20200181075A1

公开(公告)日：2020-06-11

申请号：US16641273

申请日：2019-03-29

Applicant: HOYA LENS THAILAND LTD. ,  KAGEYAMA Yukio

Inventor： Yukio KAGEYAMA

IPC: C07C319/22 ,  C08G18/38

Abstract: A method for producing a polythiol compound, the method including reacting a halide represented by Formula (1) with an alkali metal compound selected from the group made of an alkali metal sulfide and an alkali metal hydroxide to obtain a polyol compound selected from the group made of a polyol compound represented by Formula (2) and a polyol compound represented by Formula (3), in which a content of iron in the alkali metal compound is 100 ppm or less on a mass basis. in Formula (1), X represents a halogen atom.

公开(公告)号：US10545354B2

公开(公告)日：2020-01-28

申请号：US15576266

申请日：2016-05-26

Applicant: HOYA LENS THAILAND LTD.

Inventor： Hiroshi Asami ,  Ayumu Ito

IPC: G02C7/02 ,  G02C7/06 ,  G06F17/50

Abstract: A vision simulation, on assumption that spectacles are worn, is performed for a first model designed by setting a target additional power of a desirable value at a position corresponding to a fitting point on a principal meridian. A correction amount is computed for correcting the difference between a simulation value obtained for the additional power at the position corresponding to the fitting point on the principal meridian through the vision simulation and the target additional power. A second model is designed by replacing the additional power with a value obtained by the addition of the calculated correction amount to the target additional power.

公开(公告)号：US10525645B2

公开(公告)日：2020-01-07

申请号：US15557928

申请日：2016-03-31

Applicant: HOYA LENS THAILAND LTD.

Inventor： Kiyohiro Saito ,  Takashi Suzuki ,  Kiyonori Sato ,  Kenji Tanagawa

IPC: B29D11/00 ,  B29C45/56 ,  G02B3/00 ,  G02B5/30 ,  G02C7/02 ,  G02C7/12 ,  B29C45/14 ,  G02B1/08 ,  B29K33/00 ,  B29K69/00 ,  B29L11/00

Abstract: In manufacturing a functional plastic lens by loading a functional sheet S having a difference in the accuracy of bending in directions, into a mold 50 and by performing insert molding to integrally mold a lens body with the functional sheet S, a direction in which the accuracy of the bending to the functional sheet S is high is made to be a reference axis A, and the functional sheet S is loaded into the mold 50 to inhibit a filling direction of resin and the reference axis A from being orthogonal to each other. With this arrangement, the functional plastic lens having high quality is provided.

公开(公告)号：US20190302483A1

公开(公告)日：2019-10-03

申请号：US16307455

申请日：2017-06-06

Applicant: HOYA LENS THAILAND LTD.

Inventor： Takashi HATANAKA ,  Tomohiro ODAIRA

IPC: G02C7/14 ,  G02C7/02

Abstract: A spectacle lens including a prism prescription that has an eyeball-side optical surface. When one side is the same side as a prism base direction (nose side) and the other side is an opposite side of the prism base direction with a direction orthogonal to the prism base direction passing through a prism measurement reference point as a boundary, a minimum value of a curvature of the eyeball-side optical surface is on the same side as the prism base direction (nose side). Since a mean curvature becomes smaller in the prism base direction than a mean curvature of the prism measurement reference point and becomes larger in the opposite direction than the mean curvature of the prism measurement reference point across the prism measurement reference point, deviation in line of sight between right and left eyes is resolved.