JPH0667395B2 - Automatic focus type artificial eye lens device - Google Patents
Automatic focus type artificial eye lens deviceInfo
- Publication number
- JPH0667395B2 JPH0667395B2 JP61201814A JP20181486A JPH0667395B2 JP H0667395 B2 JPH0667395 B2 JP H0667395B2 JP 61201814 A JP61201814 A JP 61201814A JP 20181486 A JP20181486 A JP 20181486A JP H0667395 B2 JPH0667395 B2 JP H0667395B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- voltage
- focal length
- coil
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000000695 crystalline len Anatomy 0.000 claims description 52
- 210000001508 eye Anatomy 0.000 claims description 12
- 210000005252 bulbus oculi Anatomy 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 210000001747 pupil Anatomy 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000002177 Cataract Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Prostheses (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、白内障等水晶体の病気で、水晶体を摘出した
後、その水晶体の代りとして使用する人工眼球レンズ装
置に関するものである。Description: TECHNICAL FIELD The present invention relates to an artificial eye lens device which is used in place of the crystalline lens after the crystalline lens is extracted due to a disease of the crystalline lens such as cataract.
（従来技術及びその問題点） 従来、上記のような病気で水晶体を摘出した患者に対し
ては、水晶体の代りになるものとして、＋10〜＋18ジオ
プトリーの凸レンズを手術により水晶体のあった位置に
挿入するか、若しくは眼鏡という形で装着して、視力を
確保していた。(Prior art and its problems) Conventionally, for a patient who has had the lens removed due to the above-mentioned illness, a +10 to +18 diopter convex lens is inserted into the position where the lens was surgically placed as an alternative to the lens. I was wearing them or wearing them in the form of glasses to secure my eyesight.
しかしながら、この方式のレンズは固定焦点であるか
ら、遠方のものを見る場合と、近くのものを見る場合と
ではピントの状態が異なる。即ち、遠方にピントが合う
ように調整したレンズを使用すると、近くのものはボケ
て見え、逆に、近くのものにピントを合わせると、遠方
がボケることになる。従って、例えば目の中に入れるレ
ンズの場合、通常1m位のところにピントを合せておき、
近くのものを見る時は、さらに眼鏡をかけて見、遠方を
見る時には別の眼鏡をかけ替えるという方法が採られ、
日常生活に非常に不便を来すものであった。However, since the lens of this system has a fixed focus, the state of focus differs when viewing a distant object and when viewing a near object. That is, when a lens adjusted to focus on a distant object is used, a near object looks out of focus, and conversely, when focusing on a near object, a distant object becomes out of focus. Therefore, for example, in the case of a lens that can be put into the eye, usually focus on about 1 m,
When you look at something close to you, you wear glasses, and when you look at a distance, you change your glasses.
It was very inconvenient for daily life.
（発明の目的） 本発明は、上記問題点を解決するためになされたもの
で、遠近にかかわらず、常にピントが合うようにした自
動焦点調整式人工眼球レンズ装置を提供するものであ
る。(Object of the Invention) The present invention has been made to solve the above problems, and provides an automatic focusing artificial eye lens device that is always in focus regardless of distance.
（発明の構成） 上記目的を達成するために、本発明の自動焦点調整式人
工眼球レンズ装置は、水晶体を摘出した片方又は両方の
眼球の前記水晶体があった位置に配置され、印加電圧に
よって焦点距離が可変のレンズと、ある物体に注目した
ときの両方の眼球の瞳孔の中心間距離ｌを検出する手段
と、前記距離ｌを用いて眼球から注目物体までの距離ａ
を演算する手段と、その演算結果に基づいて焦点距離可
変レンズが注目物体に焦点を結ぶように電圧を印加する
手段とを備え、電圧印加手段は、焦点距離可変レンズと
一体的に設けられ、電圧印加電極につながる第１のコイ
ルと、焦点距離可変レンズの近傍に配置される眼鏡等の
保持部材に保持された第２のコイルと、この第２のコイ
ルに電圧を印加する電源とから構成される。(Structure of the invention) In order to achieve the above-mentioned object, the automatic focusing artificial eye lens device of the present invention is arranged at the position where the crystalline lens of one or both eyeballs from which the crystalline lens was extracted was located, and focus was applied by an applied voltage. A lens having a variable distance, a means for detecting the distance 1 between the centers of the pupils of both eyes when focusing on a certain object, and a distance a from the eyeball to the target object using the distance l.
And a means for applying a voltage based on the calculation result so that the variable focal length lens focuses on the object of interest, and the voltage applying means is provided integrally with the variable focal length lens, Consists of a first coil connected to the voltage application electrode, a second coil held by a holding member such as glasses arranged near the variable focal length lens, and a power supply for applying a voltage to the second coil. To be done.
そして、電源により電圧が印加されると、第２のコイル
で磁束が発生し、その磁束により第１のコイルに誘導電
圧が誘起されて、その誘導電圧が焦点距離可変レンズの
電極に印加されるようにしたものである。Then, when a voltage is applied by the power supply, a magnetic flux is generated in the second coil, the magnetic flux induces an induced voltage in the first coil, and the induced voltage is applied to the electrode of the focal length variable lens. It was done like this.
（実施例） 以下、図面を参照して実施例を詳細に説明する。まず、
一般的に、眼球から注目している物体までの距離をａ、
レンズから網膜までの距離をｂとすると、レンズの公式 で表わされる焦点距離ｆを有するレンズを使えばよいこ
とが判る。ここで距離ｂは既知の値であるからａを測定
することにより、そのときレンズに要求される焦点距離
ｆを求めることができる。(Example) Hereinafter, an example will be described in detail with reference to the drawings. First,
Generally, the distance from the eyeball to the object of interest is a,
Let b be the distance from the lens to the retina. It can be seen that it suffices to use a lens having a focal length f represented by Since the distance b is a known value, the focal length f required for the lens at that time can be obtained by measuring a.
第１図は、本発明の基本的な構成を示したもので、１は
水晶体を摘出した眼球、２は焦点距離可変レンズ、３は
瞳孔位置検出センサ、４は演算回路、５は電圧印加装置
である。FIG. 1 shows a basic configuration of the present invention. 1 is an eyeball from which a crystalline lens is removed, 2 is a variable focal length lens, 3 is a pupil position detecting sensor, 4 is an arithmetic circuit, and 5 is a voltage applying device. Is.
焦点距離可変レンズとしては、液晶レンズが一般によく
知られている。これは透明電極を付けた一対のガラス板
で液晶を挟み、電極に加える電圧を変えることで、レン
ズの焦点距離が変化する。第２図〜第４図は、それぞれ
液晶レンズを示したもので、第２図のものは、凹面にそ
れぞれ透明電極12を設けた２枚のガラス11を、周縁部に
スペーサ13を介して重ね合わせ、その中に液晶14を封入
してある。透明電極12にはそれぞれリード線15を介して
電圧を印加する。印加電圧と焦点距離との関係は、第６
図に示したような特性となる。第３図のものは、一方の
ガラスにフレネルレンズ16を使用したものである。また
第４図のものは、一方のガラスに凸レンズ17を使用して
いる。A liquid crystal lens is generally well known as a variable focal length lens. This is because the liquid crystal is sandwiched between a pair of glass plates with transparent electrodes and the voltage applied to the electrodes is changed to change the focal length of the lens. FIGS. 2 to 4 show liquid crystal lenses, respectively. In FIG. 2, two glasses 11 each having a transparent electrode 12 on its concave surface are overlapped with a spacer 13 at the peripheral portion. In addition, the liquid crystal 14 is enclosed in it. A voltage is applied to each transparent electrode 12 via a lead wire 15. The relationship between applied voltage and focal length is
The characteristics are as shown in the figure. In FIG. 3, the Fresnel lens 16 is used for one of the glasses. The one shown in FIG. 4 uses a convex lens 17 on one glass.
第５図は、本発明の一実施例を示したもので、手術によ
り目の中に焦点距離可変レンズ20を挿入したものであ
る。そして、21は焦点距離可変レンズ20に一体的に設け
られたスペーサ13の一部に巻き込んだ第１のコイルで、
電圧印加用の透明電極12につながっている。22は、例え
ば眼鏡23に設けられた第２のコイルであり、24はこの第
２のコイル22に電圧を印加する電源である。FIG. 5 shows an embodiment of the present invention in which a variable focal length lens 20 is inserted into the eye by surgery. 21 is a first coil wound around a part of the spacer 13 provided integrally with the variable focal length lens 20,
It is connected to a transparent electrode 12 for voltage application. Reference numeral 22 is a second coil provided on the eyeglasses 23, for example, and 24 is a power source for applying a voltage to the second coil 22.
このような構成において、電源24により第２のコイル22
に電圧を印加すると、第２のコイル22には磁束が発生
し、この磁束が第１のコイル21に誘導電圧を誘起させ
る。その結果、誘導電圧が透明電極12に印加され、焦点
距離が変わるようになっている。In such a configuration, the second coil 22 is powered by the power supply 24.
When a voltage is applied to the second coil 22, a magnetic flux is generated in the second coil 22, and this magnetic flux induces an induced voltage in the first coil 21. As a result, the induced voltage is applied to the transparent electrode 12, and the focal length is changed.
眼球から注目物体までの距離ａを測定する手段として
は、CCDラインセンサ等の光学的センサで、瞳孔の位置
を検出する。即ち、第７図に示したように、２つの眼球
の瞳孔の中心間距離をｌ、眼球の半径をｒ、眼球の中心
間距離をｄとすると、距離ａは、 で表わされる。As a means for measuring the distance a from the eyeball to the object of interest, an optical sensor such as a CCD line sensor detects the position of the pupil. That is, as shown in FIG. 7, when the distance between the centers of the pupils of two eyes is 1, the radius of the eyes is r, and the distance between the centers of the eyes is d, the distance a is It is represented by.
以上のように、瞳孔位置検出センサ３により瞳孔中心間
距離ｌを検出し、この距離ｌから、演算回路４により眼
球から注目物体までの距離ａを演算し、この距離ａから
レンズの最適焦点距離ｆを求め、レンズがその最適焦点
距離ｆになるように、電圧印加装置５により焦点距離可
変レンズ2,20に電圧を印加して、注目物体の像を網膜上
に結像させることができる。As described above, the pupil position detecting sensor 3 detects the distance 1 between the centers of the pupils, and the arithmetic circuit 4 calculates the distance a from the eyeball to the object of interest from the distance l, and the optimum focal length of the lens is calculated from the distance a. f can be obtained, and a voltage can be applied to the variable focal length lenses 2 and 20 by the voltage application device 5 so that the lens has the optimum focal length f, and the image of the object of interest can be formed on the retina.
（発明の効果） 以上説明したように、本発明によれば、ある物体に注目
すれば、そのときの瞳孔の位置から自動的にレンズの焦
点距離が変化し、注目物体にピントが合い、その物を明
瞭に見ることができる。そして、焦点距離可変レンズを
体内に埋め込むにも関わらず、そのレンズに直接電源電
圧を印加するのでなく、眼鏡等に設けた第２のコイルに
電源電圧を印加することで、焦点距離可変レンズに一体
的に設けた第１のコイルに誘導電圧を誘起させ、この誘
導電圧を電極に印加するので、正確な焦点距離が得られ
ると共に、安全性も高いという効果がある。(Effects of the Invention) As described above, according to the present invention, when focusing on an object, the focal length of the lens automatically changes from the position of the pupil at that time, and the object of interest is brought into focus. You can see things clearly. Then, even though the variable focal length lens is embedded in the body, the power source voltage is not applied directly to the lens but is applied to the second coil provided in the eyeglasses or the like, thereby changing the focal length variable lens. Since an induced voltage is induced in the first coil integrally provided and this induced voltage is applied to the electrodes, there is an effect that an accurate focal length can be obtained and safety is high.
第１図は、本発明の一実施例の構成を示すブロック図、
第２図〜第４図は、それぞれ焦点可変レンズの構成図、
第５図は、手術により目の中に焦点可変レンズを入れる
方式の構成図、第６図は、焦点可変レンズの電圧と焦点
距離との関係を示す図、第７図は、瞳孔中心間距離ｌか
ら眼球・注目物体間距離ａを求める図である。 １……眼球、2,20……焦点距離可変レンズ、３……瞳孔
位置検出センサ、４……演算回路、５……電圧印加装
置、12……透明電極、13……スペーサ、14……液晶、2
1,22……コイル、23……眼鏡、24……電源。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention,
2 to 4 are configuration diagrams of the variable focus lens,
FIG. 5 is a configuration diagram of a system in which a variable focus lens is inserted into the eye by surgery, FIG. 6 is a diagram showing a relationship between a voltage of the variable focus lens and a focal length, and FIG. 7 is a distance between pupil centers. It is a figure which calculates | requires the distance a between an eyeball and a target object from l. 1 ... Eyeball, 2,20 ... Focal length variable lens, 3 ... Pupil position detection sensor, 4 ... Calculation circuit, 5 ... Voltage application device, 12 ... Transparent electrode, 13 ... Spacer, 14 ... LCD, 2
1,22 …… coil, 23 …… glasses, 24 …… power supply.
Claims (1)
記水晶体があった位置に配置され、印加電圧によって焦
点距離が可変のレンズと、ある物体に注目したときの両
方の眼球の瞳孔の中心間距離ｌを検出する手段と、前記
距離ｌを用いて眼球から前記注目物体までの距離ａを演
算する手段と、その演算結果に基づいて前記焦点距離可
変レンズが前記注目物体に焦点を結ぶように電圧を印加
する手段とを備え、 前記電圧印加手段は、前記焦点距離可変レンズと一体的
に設けられ、電圧印加電極につながる第１のコイルと、
前記焦点距離可変レンズの近傍に配置される眼鏡等の保
持部材に保持された第２のコイルと、該第２のコイルに
電圧を印加する電源とからなり、前記第２のコイルで発
生する磁束により前記第１のコイルに誘起された誘導電
圧を前記焦点距離可変レンズの電極に印加するようにし
たことを特徴とする自動焦点調整式人工眼球レンズ装
置。1. A lens, which is disposed at a position where the crystalline lens was present in one or both eyeballs from which the crystalline lens is removed, and whose focal length is variable by an applied voltage, and the center of the pupils of both eyes when focusing on a certain object. Means for detecting the inter-space distance l, means for calculating the distance a from the eyeball to the object of interest using the distance l, and the variable focal length lens focusing on the object of interest based on the calculation result. And a means for applying a voltage to the voltage applying means, the voltage applying means is provided integrally with the variable focal length lens, and a first coil connected to the voltage applying electrode,
A magnetic flux generated by the second coil, which is composed of a second coil held by a holding member such as glasses arranged near the variable focal length lens and a power supply for applying a voltage to the second coil. The automatic focusing artificial eye lens device is characterized in that the induced voltage induced by the first coil is applied to the electrode of the variable focal length lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61201814A JPH0667395B2 (en) | 1986-08-29 | 1986-08-29 | Automatic focus type artificial eye lens device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61201814A JPH0667395B2 (en) | 1986-08-29 | 1986-08-29 | Automatic focus type artificial eye lens device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6357044A JPS6357044A (en) | 1988-03-11 |
| JPH0667395B2 true JPH0667395B2 (en) | 1994-08-31 |
Family
ID=16447347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61201814A Expired - Lifetime JPH0667395B2 (en) | 1986-08-29 | 1986-08-29 | Automatic focus type artificial eye lens device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667395B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8778022B2 (en) | 2004-11-02 | 2014-07-15 | E-Vision Smart Optics Inc. | Electro-active intraocular lenses |
| US9801709B2 (en) | 2004-11-02 | 2017-10-31 | E-Vision Smart Optics, Inc. | Electro-active intraocular lenses |
| ES2961305T3 (en) * | 2004-11-02 | 2024-03-11 | E Vision Smart Optics Inc | Electroactive lenses |
| CN104160325B (en) | 2012-01-06 | 2017-05-10 | E-视觉智能光学公司 | Eyewear docking station and electronic module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036130A (en) * | 1973-08-01 | 1975-04-05 | ||
| JPS60198511A (en) * | 1984-03-21 | 1985-10-08 | Susumu Sato | Auto-focus lens |
-
1986
- 1986-08-29 JP JP61201814A patent/JPH0667395B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6357044A (en) | 1988-03-11 |
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