JP6049939B2 - 眼用レンズ及び眼用レンズの設計方法 - Google Patents
眼用レンズ及び眼用レンズの設計方法 Download PDFInfo
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
- G02C7/028—Special mathematical design techniques
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
- A61F2/1637—Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
- A61F2/1637—Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses
- A61F2/1645—Toric lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/22—Correction of higher order and chromatic aberrations, wave front measurement and calculation
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Cardiology (AREA)
- Mathematical Physics (AREA)
- Prostheses (AREA)
- Eyeglasses (AREA)
- Lenses (AREA)
Description
実施例1について以下説明する。眼内レンズについて、近軸光学によると屈折力P(D)は以下の式(13)で表される。
次に実施例2について説明する。本発明の式(12)において、第2項以降のパラメータをすべて0とすると、第1項から回転対称のレンズを表す式が得られる。つまり、本発明の式(12)は、曲率c、コーニック定数kの回転対称面をベース形状とするトーリック面を規定する。そこで、a2qx=−a2qy、a2qx2py=0(p、qは自然数)とすると、トーリック眼内レンズの強主経線及び弱主経線の平均である等価球面度数は、曲率c、コーニック定数kを持つ回転対称面によって生じる屈折力として規定できる。すなわち、式(12)の第1項からトーリック面の等価球面度数を規定する近軸曲率が容易に求まるため、等価球面屈折力も容易に算出することができる。このように、式(12)において、基準面形状の曲率半径R(c=1/R)と、絶対値が同一で正負の符号だけを逆にした一対の係数(a2qx=−a2qy)の、2つのパラメータを設定するだけで、等価球面度数と円柱屈折力を指定してトーリック眼内レンズを設計することができる。
次に実施例3について説明する。最初に、ザイデルの5収差の1つである球面収差について、図1を参照しながら説明する。球面収差が生じると、回転対称型のレンズにおける中心部(近軸部)と周辺部とにおけるパワーに差が出る。球面収差とは、レンズの中心部を透過する光と周辺部を透過する光が同一の焦点に集まらない現象である。
次に実施例4について説明する。実施例4では、以下の仕様でトーリック眼内レンズを設計する。
<設計仕様>
入射光線径 :φ6mm
X方向屈折力(水中) :+21.5D(近軸)、+22.0D(周辺)
Y方向屈折力(水中) :+18.5D(近軸)、+18.0D(周辺)
球面収差Z{4,0}RMS:0.1λ以下
レンズ タイプ :両凸レンズ(R1面:球面、R2面:トーリック面)
ただし、|R1|<|R2|
レンズ材質 :PMMA
レンズ中心厚 :0.8mm
水の屈折率 :1.333(λ=546nm)
光源波長 :546nm
次に実施例5について説明する。本実施例では、式(12)が以下の式(38)で表されることに注目する。
次に実施例6について説明する。この実施例では式(12)に(X+Y)2n−1に基づく定義式(nは自然数)を加えたトーリック面を用いる。トーリック眼内レンズの設計においては、乱視軸とトーリック軸の軸合わせが重要である。そこで、乱視軸とトーリック軸のずれを評価する必要もある。また、トーリック眼内レンズのエッジ厚は一定ではなく変化する。しかし、一般的な光学ソフトではX方向又はY方向のエッジ厚しか計算できない。そのため、ソフト内でレンズの光学系を回転させる作業を行ったり、トーリック面のサグ量を計算してレンズの中心厚との差からエッジ厚を計算したりする必要がある。
次に実施例7について説明する。一般に、光学部品の製造においては部品の検品を行う工程が設けられている。一般的な回転対称系の光学面は、以下の式(45)で与えられる。
また、
角膜屈折力 :弱主経線40.4D、強主経線42.4D
角膜球面収差 :+0.28μm(@φ6mm)
絞り径 :φ5.2mm(@IOL前面)
IOL :円柱屈折力3.0D、等価球面度数20D
Claims (6)
- 眼用レンズのレンズ面上の任意の経線方向における断面形状が
・・・(1)
を含む式で表現され、cは前記眼用レンズにおける近軸曲率であり、rは前記眼用レンズのレンズ中心からの距離であり、kは前記眼用レンズにおけるレンズ光軸に回転対称な面のコーニック定数であり、前記c、r、kは前記レンズ面上の前記経線方向について共通であり、A(θ)及びB(θ)は、式(2)及び(3)で与えられる
・・・(2)
・・・(3)
ことを特徴とする眼用レンズ。 - 前記眼用レンズはトーリックレンズであることを特徴とする請求項1に記載の眼用レンズ。
- 前記式(1)におけるA(θ)は180°周期関数であり、B(θ)は180°周期関数と90°周期関数の和であることを特徴とする請求項1又は請求項2に記載の眼用レンズ。
- 眼用レンズのレンズ面上の任意の経線方向における断面形状を
・・・(4)
を含む式により規定し、
cは前記眼用レンズにおける近軸曲率であり、rは前記眼用レンズのレンズ中心からの距
離であり、kは前記眼用レンズにおけるレンズ光軸に回転対称な面のコーニック定数であり、前記c、r、kは前記レンズ面上の前記経線方向について共通であり、A(θ)及びB(θ)は、式(5)及び(6)で与えられる
・・・(5)
・・・(6)
であることを特徴とする眼用レンズの設計方法。 - 前記眼用レンズはトーリックレンズであることを特徴とする請求項4に記載の眼用レンズの設計方法。
- 前記式(4)におけるA(θ)は180°周期関数であり、B(θ)は180°周期関数と90°周期関数の和であることを特徴とする請求項4又は請求項5に記載の眼用レンズの設計方法。
Applications Claiming Priority (3)
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JP2014048026 | 2014-03-11 | ||
JP2014048026 | 2014-03-11 | ||
PCT/JP2015/052409 WO2015136997A1 (ja) | 2014-03-11 | 2015-01-28 | 眼用レンズ及び眼用レンズの設計方法 |
Publications (2)
Publication Number | Publication Date |
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JP6049939B2 true JP6049939B2 (ja) | 2016-12-27 |
JPWO2015136997A1 JPWO2015136997A1 (ja) | 2017-04-06 |
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US (3) | US20170045756A1 (ja) |
EP (1) | EP3118671B1 (ja) |
JP (1) | JP6049939B2 (ja) |
KR (1) | KR102302427B1 (ja) |
CN (1) | CN106575047B (ja) |
ES (1) | ES2910013T3 (ja) |
PL (1) | PL3118671T3 (ja) |
SG (1) | SG11201607593VA (ja) |
WO (1) | WO2015136997A1 (ja) |
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WO2015127410A2 (en) * | 2014-02-24 | 2015-08-27 | Ge Oil & Gas Esp, Inc. | Downhole wet gas compressor processor |
US10856969B2 (en) | 2016-04-08 | 2020-12-08 | Kowa Company, Ltd. | Toric intraocular lens and intraocular lens insertion apparatus |
US11366336B2 (en) | 2016-12-07 | 2022-06-21 | Kowa Company, Ltd. | Toric ophthalmic lens |
KR20210085583A (ko) * | 2019-12-31 | 2021-07-08 | 주식회사 인터로조 | 시각적 성능 개선을 위한 구면수차 제어 설계가 적용된 콘택트 렌즈 |
CN113040976B (zh) * | 2021-03-04 | 2022-06-28 | 天津世纪康泰生物医学工程有限公司 | 一种超薄零球差可植入近视眼透镜片 |
CN114740634B (zh) * | 2022-05-07 | 2023-11-17 | 江苏圣谱光学技术有限公司 | 一种基于环曲面的自由曲面镜片及其设计方法 |
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- 2015-01-28 ES ES15761883T patent/ES2910013T3/es active Active
- 2015-01-28 WO PCT/JP2015/052409 patent/WO2015136997A1/ja active Application Filing
- 2015-01-28 CN CN201580024754.3A patent/CN106575047B/zh active Active
- 2015-01-28 JP JP2016507389A patent/JP6049939B2/ja active Active
- 2015-01-28 SG SG11201607593VA patent/SG11201607593VA/en unknown
- 2015-01-28 US US15/125,097 patent/US20170045756A1/en not_active Abandoned
- 2015-01-28 EP EP15761883.6A patent/EP3118671B1/en active Active
- 2015-01-28 PL PL15761883.6T patent/PL3118671T3/pl unknown
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2020
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US20210063768A1 (en) | 2021-03-04 |
EP3118671B1 (en) | 2022-03-23 |
US20170045756A1 (en) | 2017-02-16 |
KR102302427B1 (ko) | 2021-09-15 |
US20220244568A1 (en) | 2022-08-04 |
CN106575047B (zh) | 2020-05-26 |
EP3118671A4 (en) | 2017-11-15 |
KR20160132908A (ko) | 2016-11-21 |
WO2015136997A1 (ja) | 2015-09-17 |
CN106575047A (zh) | 2017-04-19 |
EP3118671A1 (en) | 2017-01-18 |
SG11201607593VA (en) | 2016-10-28 |
JPWO2015136997A1 (ja) | 2017-04-06 |
PL3118671T3 (pl) | 2022-07-18 |
ES2910013T3 (es) | 2022-05-11 |
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