Patents by Inventor Tadashi Kaga
Tadashi Kaga has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170351116Abstract: A technology concerns a spectacle lens to suppress unnecessary convergence. In the spectacle lens, when an inner horizontal direction of the spectacle lens is a direction toward the nose of a user who wears the spectacle lens, and an outer horizontal direction of the spectacle lens is a direction toward an ear of the user, a shape of a base in prism is formed in a portion in which power continuously changes and through which a main line of sight, influenced by convergence of the user of the spectacle lens, passes such that at least a part of a base out prism, which may be generated in the portion, is cancelled.Type: ApplicationFiled: December 28, 2015Publication date: December 7, 2017Applicant: HOYA LENS THAILAND LTD.Inventors: Tadashi KAGA, Ayumu ITO, Kazuma KOZU
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Patent number: 9746694Abstract: There is provided a progressive addition lens for spectacles including a distance portion and a near portion having different powers, wherein an equivalent spherical power of the distance portion is plus; and a first lens and a second lens having different addition powers from each other, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the first lens, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the second lens are the same.Type: GrantFiled: February 13, 2013Date of Patent: August 29, 2017Assignee: EHS LENS PHILIPPINES, INC.Inventors: Toshihide Shinohara, Tadashi Kaga, Ayumu Ito, Takateru Mori
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Publication number: 20170115510Abstract: Progressive addition lens includes a near portion having a power for viewing a near field, a distance portion having a power for viewing a distance field further than the near field, and an intermediate portion connecting the distance portion and the near portion. The progressive addition lens includes an aspherical object-side surface and an aspherical eyeball-side surface and is formed in rotational symmetry with respect to a center of design of the progressive addition lens. The object-side surface includes a first stable region formed in rotational symmetry with respect to the center of design and including the center of design, and an aspherical region arranged outside of the first stable region to contact the first stable region and formed in rotational symmetry with respect to the center of design. A Peak to Valley value of a mean surface refractive power in the first stable region is 0.12 D or less.Type: ApplicationFiled: June 3, 2015Publication date: April 27, 2017Applicant: HOYA LENS THAILAND LTD.Inventors: Tadashi KAGA, Toshihide SHINOHARA, Ayumu ITO, Hiroshi ASAMI
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Publication number: 20170082870Abstract: A progressive addition lens includes a portion having a power for viewing a near field, a portion having a power for viewing a distance field further than the near field, and an portion connecting the distance portion and the near portion. The progressive addition lens includes an aspherical object-side surface and an aspherical eyeball-side surface and is formed in rotational symmetry with respect to a center of design of the progressive addition lens. The object-side surface includes a first stable region formed in rotational symmetry with respect to the center of design and including the center of design, and an aspherical region arranged outside of the first stable region to contact the first stable region and formed in rotational symmetry with respect to the center of design. A PV value (Peak to Valley) of a mean surface refractive power in the first stable region is 0.12 D or less.Type: ApplicationFiled: June 3, 2015Publication date: March 23, 2017Applicant: HOYA LENS THAILAND LTD.Inventors: Tadashi KAGA, Toshihide SHINOHARA, Ayumu ITO, Hiroshi ASAMI
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Patent number: 9581831Abstract: An optical lens including, an object-side surface including an atoric surface element and an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.Type: GrantFiled: September 13, 2012Date of Patent: February 28, 2017Assignee: EHS LENS PHILIPPINES, INC.Inventors: Toshihide Shinohara, Tadashi Kaga, Takateru Mori
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Publication number: 20150077703Abstract: There is provided a progressive addition lens for spectacles including a distance portion and a near portion having different powers, wherein an equivalent spherical power of the distance portion is plus; and a first lens and a second lens having different addition powers from each other, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the first lens, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the second lens are the same.Type: ApplicationFiled: February 13, 2013Publication date: March 19, 2015Inventors: Toshihide Shinohara, Tadashi Kaga, Ayumu Ito, Takateru Mori
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Publication number: 20150055083Abstract: There is provided a progressive addition lens, including: a distance portion and a near portion; an object side surface including a first toric surface element; and an eyeball side surface including a second toric surface element that cancels the first toric surface element, wherein the first toric surface element is the element in which a vertical surface power OVPf1 at a distance reference point which is previously defined in the distance portion on the object side surface, is larger than a horizontal surface power OHPf1 at the distance reference point, and OVPf1 is not less than a vertical surface power OVPn1 at a near reference point which is previously defined in the near potion on the object side surface.Type: ApplicationFiled: April 5, 2013Publication date: February 26, 2015Inventors: Takateru Mori, Toshihide Shinohara, Tadashi Kaga
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Patent number: 8960900Abstract: A progressive-power lens has one surface which satisfies the following expressions CY(DP)=CT(DP) CY(P)>CT(P) where CT(DP) denotes a vertical direction curvature at the distance reference point, CY(DP) denotes a horizontal direction curvature, CY(P) denotes a horizontal direction curvature at a point on the principal meridian which is located further on the near portion than the progressive start point, and CT(P) denotes a vertical direction curvature at the point.Type: GrantFiled: March 7, 2012Date of Patent: February 24, 2015Assignee: Hoya Lens Manufacturing Philippines Inc.Inventors: Kazutoshi Kato, Yohei Suzuki, Ayumu Ito, Toshihide Shinohara, Tadashi Kaga
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Patent number: 8833938Abstract: A progressive-power spectacle lens design method, the progressive-power spectacle lens including a distance portion, a near portion, and a progressive portion provided between the distance portion and the near portion, the method comprising: decreasing a distance along a principal meridian from a fitting point to a progression start point and increasing a length of a progressive corridor defined by the progression start point and a progression end point when addition power is large, whereas increasing the distance along the principal meridian from the fitting point to the progression start point and decreasing the length of the progressive corridor when the addition power is small, wherein the distance from the fitting point to the progression end point is fixed irrespective of the addition power.Type: GrantFiled: September 12, 2011Date of Patent: September 16, 2014Assignee: Hoya Lens Manufacturing Philippines Inc.Inventors: Osamu Wada, Tadashi Kaga
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Publication number: 20140146283Abstract: A progressive power lens including a far vision part and a near vision part (wherein an average power of a far vision measurement reference point is minus) including: an object side surface including a first element, and an eyeball side surface including a second element cancelling the first element. The first element includes an element of a tonic surface or an element of an atoric surface by which horizontal surface power is larger than vertical surface power at a fitting point positioned at a lower end of the far vision part. The far vision part includes an element by which the vertical surface power in a first coordinate of a principal sight line intersecting the fitting point is smaller than the vertical surface power in a second coordinate of the principal sight line whose distance from the fitting point surpasses the distance between the first coordinate and the fitting point.Type: ApplicationFiled: November 29, 2013Publication date: May 29, 2014Inventors: Toshihide SHINOHARA, Tadashi KAGA
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Patent number: 8684523Abstract: A spectacle lens includes a first region which is located in at least part of a portion of a lens where a pivotal angle of an eyeball of a wearer ranges from 20 to 60 degrees and in which correcting astigmatism has priority over correcting average power based on prescribed power, and a second region which is formed inside the first region and in which correcting the average power has priority over correcting the astigmatism.Type: GrantFiled: April 20, 2012Date of Patent: April 1, 2014Assignee: Hoya Lens Manufacturing Philippines Inc.Inventors: Osamu Wada, Tadashi Kaga, Hiroshi Asami
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Patent number: 8678585Abstract: An eye-side refractive surface 11 of a distance portion is concave and at least part of an eye-side refractive surface 3 of a near portion is a convex region 31 where one or both of principal meridians of the surface are convex. This provides a back surface progressive-power lens capable of solving disadvantages in terms of lens thickness, external appearance and the like in a back surface progressive-power lens in which the eye-side refractive surface is formed of a progressive-power surface.Type: GrantFiled: March 13, 2012Date of Patent: March 25, 2014Assignee: Hoya Lens Manufacturing Philippines Inc.Inventors: Tadashi Kaga, Toshihide Shinohara
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Publication number: 20130083288Abstract: optical lens including, an object-side surface including an atoric surface element and an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.Type: ApplicationFiled: September 13, 2012Publication date: April 4, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Toshihide SHINOHARA, Tadashi KAGA, Takateru MORI
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Publication number: 20120274893Abstract: A spectacle lens includes a first region which is located in at least part of a portion of a lens where a pivotal angle of an eyeball of a wearer ranges from 20 to 60 degrees and in which correcting astigmatism has priority over correcting average power based on prescribed power, and a second region which is formed inside the first region and in which correcting the average power has priority over correcting the astigmatism.Type: ApplicationFiled: April 20, 2012Publication date: November 1, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Osamu WADA, Tadashi KAGA, Hiroshi ASAMI
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Publication number: 20120229756Abstract: A progressive-power lens has one surface which satisifies the following expressions CY(DP)=CT(DP) CY(P)>CT(P) where CT(DP) denotes a vertical direction curvature at the distance reference point, CY(DP) denotes a horizontal direction curvature, CY(P) denotes a horizontal direction curvature at a point on the principal meridian which is located further on the near portion than the progressive start point, and CT(P) denotes a vertical direction curvature at the point.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kazutoshi KATO, Yohei SUZUKI, Ayumu ITO, Toshihide SHINOHARA, Tadashi KAGA
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Publication number: 20120229755Abstract: A progressive-power lens has one surface which satisfies the following expressions CY(DP)=CT(DP) CY(P)<CT(P) where CT(DP) denotes a vertical direction curvature at the distance reference point, CY(DP) denotes a horizontal direction curvature, CY(P) denotes a horizontal direction curvature at a point on the principal meridian which is located further on the near portion than the progressive start point, and CT(P) denotes a vertical direction curvature at the point.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kazutoshi KATO, Yohei SUZUKI, Ayumu ITO, Toshihide SHINOHARA, Tadashi KAGA
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Publication number: 20120200822Abstract: An eye-side refractive surface 11 of a distance portion is concave and at least part of an eye-side refractive surface 3 of a near portion is a convex region 31 where one or both of principal meridians of the surface are convex. This provides a back surface progressive-power lens capable of solving disadvantages in terms of lens thickness, external appearance and the like in a back surface progressive-power lens in which the eye-side refractive surface is formed of a progressive-power surface.Type: ApplicationFiled: March 13, 2012Publication date: August 9, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Tadashi KAGA, Toshihide SHINOHARA
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Patent number: 8147062Abstract: An eye-side refractive surface 11 of a distance portion is concave and at least part of an eye-side refractive surface 3 of a near portion is a convex region 31 where one or both of principal meridians of the surface are convex. This provides a back surface progressive-power lens capable of solving disadvantages in terms of lens thickness, external appearance and the like in a back surface progressive-power lens in which the eye-side refractive surface is formed of a progressive-power surface.Type: GrantFiled: August 9, 2006Date of Patent: April 3, 2012Assignee: Seiko Epson CorporationInventors: Tadashi Kaga, Toshihide Shinohara
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Publication number: 20120062837Abstract: A progressive-power spectacle lens design method, the progressive-power spectacle lens including a distance portion, a near portion, and a progressive portion provided between the distance portion and the near portion, the method comprising: decreasing a distance along a principal meridian from a fitting point to a progression start point and increasing a length of a progressive corridor defined by the progression start point and a progression end point when addition power is large, whereas increasing the distance along the principal meridian from the fitting point to the progression start point and decreasing the length of the progressive corridor when the addition power is small, wherein the distance from the fitting point to the progression end point is fixed irrespective of the addition power.Type: ApplicationFiled: September 12, 2011Publication date: March 15, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Osamu WADA, Tadashi KAGA
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Patent number: 8090628Abstract: A lens order system, includes: a server unit, including: a data recognizer that recognizes lens design detail data relating to design details of a lens; an image storage that stores object image data relating to an image of an object; an image recognizer that recognizes the object image data based on the lens design detail data; and an order reception section that recognizes order data relating to an order for a designed lens and generates order reception data, and a terminal unit connected with the server unit in a data transmittable manner, the terminal unit including: a data acquiring section that acquires the lens design detail data; a lens design section that designs the lens based on the lens design detail data; an image processor that superposes lens image data relating to an image of the designed lens designed by the lens design section on the object image data sent from the server unit and generates processed image data in which a superposing portion of the object image data and the lens image data iType: GrantFiled: August 2, 2007Date of Patent: January 3, 2012Assignee: Seiko Epson CorporationInventors: Toshihide Shinohara, Tadashi Kaga, Ayumu Ito