JPH0531074A - Eye refraction measuring device - Google Patents
Eye refraction measuring deviceInfo
- Publication number
- JPH0531074A JPH0531074A JP3208497A JP20849791A JPH0531074A JP H0531074 A JPH0531074 A JP H0531074A JP 3208497 A JP3208497 A JP 3208497A JP 20849791 A JP20849791 A JP 20849791A JP H0531074 A JPH0531074 A JP H0531074A
- Authority
- JP
- Japan
- Prior art keywords
- refraction
- split
- light
- difference
- objective
- 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.)
- Pending
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、眼科や眼鏡店で使用す
る眼屈折測定装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eye refraction measuring device used in ophthalmology and spectacle stores.
【０００２】[0002]
【従来の技術】従来、他覚的な眼屈折測定には近赤外光
を使ったオートレフラクトメータが使用されるのが一般
的である。2. Description of the Related Art Conventionally, an autorefractometer using near infrared light is generally used for objective eye refraction measurement.
【０００３】[0003]
【発明が解決しようとする課題】しかし、網膜における
近赤外光の反射面は可視光の反射面よりも奥にあるため
に、測定値が自覚的測定によるものと合致せず、またそ
のずれにも個人差があるという問題がある。そのため、
他覚的測定による屈折値は、より正確な自覚的測定の出
発点或いは参考値として使用されていることが多い。However, since the reflection surface of near-infrared light on the retina is deeper than the reflection surface of visible light, the measured values do not match those measured by subjective measurement, and their deviations are caused. However, there is a problem that there are individual differences. for that reason,
The refraction value obtained by objective measurement is often used as a starting point or reference value for more accurate subjective measurement.
【０００４】一方、自覚的測定には被検者の的確な応答
が必要であり、幼児等の被検者によっては測定が困難で
ある。On the other hand, the subjective measurement requires an accurate response of the subject, which is difficult for some subjects such as infants.
【０００５】本発明の目的は、自覚的屈折値と他覚的屈
折値の差を測定し、その差を利用して半他覚的に正確な
眼屈折測定を行う眼屈折測定装置を提供することにあ
る。An object of the present invention is to provide an eye refraction measuring apparatus for measuring a difference between a subjective refraction value and an objective refraction value and utilizing the difference to perform semi-objective accurate eye refraction measurement. Especially.
【０００６】[0006]
【課題を解決するための手段】上述の目的を達成するた
めの本発明に係る眼屈折測定装置は、可視光により瞳の
２個所から指標を投影する指標投影系と、該指標の視度
を被検者が調節する調節手段と、近赤外光で光位置セン
サにより他覚的に眼屈折測定を行う他覚屈折測定手段
と、前記調節手段の状態と前記他覚屈折測定手段による
測定値とから自覚的屈折値と他覚的屈折値の差を求める
演算手段と有することを特徴とするものである。An eye refraction measuring apparatus according to the present invention for achieving the above-mentioned object, an index projection system for projecting an index from two positions of a pupil by visible light, and a diopter of the index. Adjusting means adjusted by the subject, objective refraction measuring means for objectively measuring eye refraction by the optical position sensor with near infrared light, state of the adjusting means and measurement value by the objective refraction measuring means It is characterized by having a calculating means for obtaining the difference between the subjective refraction value and the objective refraction value from the above.
【０００７】[0007]
【作用】上述の構成を有する眼屈折測定装置は、可視光
により被検眼瞳の２個所から被検眼に投影された指標像
を、被検者が調節手段を操作することにより一致させ、
その時の調節手段の状態から自覚的屈折値を得る。In the eye refraction measuring device having the above-mentioned structure, the index image projected by the visible light from the two positions of the pupil of the eye to be inspected is made coincident by the subject operating the adjusting means,
The subjective refraction value is obtained from the state of the adjusting means at that time.
【０００８】[0008]
【実施例】本発明を図示の実施例に基づいて詳細に説明
する。図１は第１の実施例であり、被検眼Ｅの眼軸を通
る光路O1上には、対物レンズ１、穴あきミラー２、図２
に示すように瞳Ｐに共役な中心開口３ａを持つ絞り３、
レンズ４、近赤外光に感度を有するＣＣＤから成る撮像
素子５を有するテレビカメラ６が順次に配置されてい
る。また、穴あきミラー２の反射方向の光路O2上には、
図３に示すように瞳Ｐに共役な開口７ａ、７ｂを有する
２穴絞り７、レンズ８、図４に示すように可視域λ1 の
低いレベルの透過バンドと近赤外域λ2 の高いレベルの
透過バンドを有するフィルタ９、図５に示すようにスリ
ット１０ａ、スプリットプリズム１０ｂ、１０ｃを有す
るスプリット板１０、光源１１が順次に配置されてい
る。また、テレビカメラ６の出力は演算装置１２に接続
されている。更に、矢印方向に動くレンズ４、８は、被
検者が動かすことができるようになっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 shows a first embodiment, in which an objective lens 1, a perforated mirror 2, and an optical path O1 passing through the eye axis of an eye E to be inspected are provided.
, A diaphragm 3 having a central aperture 3a conjugate to the pupil P,
A television camera 6 having a lens 4 and an image pickup device 5 composed of a CCD sensitive to near infrared light is sequentially arranged. Also, on the optical path O2 in the reflection direction of the perforated mirror 2,
As shown in FIG. 3, a 2-hole diaphragm 7 having apertures 7a and 7b conjugated to the pupil P, a lens 8, and a low-level transmission band in the visible region λ 1 and a high level in the near-infrared region λ 2 as shown in FIG. 5, a filter 9 having a transmission band, a slit 10a, a split plate 10 having split prisms 10b and 10c, and a light source 11 are sequentially arranged as shown in FIG. The output of the television camera 6 is connected to the arithmetic unit 12. Further, the lenses 4 and 8 that move in the directions of the arrows can be moved by the subject.
【０００９】光源１１からの光はスプリット板１０、フ
ィルタ９、レンズ８、２穴２穴絞り７、穴あきミラー
２、対物レンズ１を通って、被検眼Ｅの瞳の２個所から
被検眼Ｅ内に入り、眼底Erにスプリット光束を投影す
る。眼底Erからの反射光は対物レンズ１、穴あきミラー
２の穴、絞り３、レンズ４を通って、ＣＣＤ撮像素子５
にスプリット光束を結像する。レンズ４、８が動いてス
プリット板１０が可視光眼底に共役になると、被検眼Ｅ
にはスプリットが合致して１本に見える。The light from the light source 11 passes through the split plate 10, the filter 9, the lens 8, the two-hole two-hole diaphragm 7, the perforated mirror 2, and the objective lens 1 from two positions of the pupil of the eye E to be examined E. It enters inside and projects the split light flux onto the fundus Er. The reflected light from the fundus Er passes through the objective lens 1, the hole of the perforated mirror 2, the diaphragm 3 and the lens 4, and the CCD image pickup device 5
The split light flux is imaged on. When the lenses 4 and 8 move and the split plate 10 becomes conjugate with the fundus of visible light, the eye E
The splits match and looks like one.
【００１０】しかし、被検眼Ｅにより可視光によるスプ
リットが合致しても、テレビカメラ６に映される近赤外
光による像は、色収差や眼底反射位置の相違のために、
図６に示すようにスプリットがずれている。そこで、こ
れらの像を通る走査線S1、S1の信号を演算装置１２に取
り込み、近赤外光の眼底反射位置を計算する。従って、
レンズ４、８を被検者が動かして自覚的にスプリットを
合致することによって、可視光の自覚屈折値を求めるこ
とができ、その時点での近赤外線によるスプリット像か
ら、他覚的屈折値を求めることができる。However, even if the split by the visible light is matched by the eye E to be inspected, the image by the near infrared light projected on the television camera 6 is due to the chromatic aberration and the difference in the fundus reflection position.
The split is displaced as shown in FIG. Therefore, the signals of the scanning lines S1 and S1 passing through these images are taken into the arithmetic unit 12 and the fundus reflection position of near infrared light is calculated. Therefore,
The subjective refraction value of the visible light can be obtained by the subject moving the lenses 4 and 8 to subjectively match the split, and the objective refraction value can be obtained from the split image by the near infrared rays at that time. You can ask.
【００１１】なお、スプリット視標の代りに補色から成
る２本のスリットを瞳の２個所から投影してもよい。そ
の場合には、合致すると白色の１本の線となる。Instead of the split target, two slits of complementary colors may be projected from two positions of the pupil. In that case, if they match, a single white line is formed.
【００１２】図７は第２の実施例の構成図であり、被検
眼Ｅの前方の光路O3上には自覚屈折検査レンズ２１、ダ
イクロイックミラー２２が順次に配置され、その遠方に
は視標２３が設置されている。また、自覚屈折検査レン
ズ２１は例えばホロプタのように多数の度の違うレンズ
を有しており、ターレット２４、２５、２６を適当に回
転させて自在にディオプタを変えることができるように
なっている。ダイクロイックミラー２２の反射方向の光
路O4上には、可視光を反射し赤外光を透過するダイクロ
イックミラー２７、ＬＥＤ光源を使用し公知の近赤外他
覚的屈折測定手段２８が順次に配置されており、ダイク
ロイックミラーの反射方向の光路O5上にはレンズ２９、
スプリット投影系３０が配置されている。このスプリッ
ト投影系３０は第１の実施例と同様のものであり、レン
ズ２９側から２穴絞り７、レンズ８、スプリット板１
０、光源１１によって構成されていて、スプリット板１
０と光源１１は矢印のように動くようになっている。FIG. 7 is a block diagram of the second embodiment, in which the subjective refraction test lens 21 and the dichroic mirror 22 are sequentially arranged on the optical path O3 in front of the eye E to be inspected, and the optotype 23 is located in the distance. Is installed. Further, the subjective refraction inspection lens 21 has a large number of lenses with different degrees, such as a holopter, and the turrets 24, 25 and 26 can be appropriately rotated to freely change the diopter. .. On the optical path O4 in the reflection direction of the dichroic mirror 22, a dichroic mirror 27 that reflects visible light and transmits infrared light, and a known near infrared objective refraction measuring means 28 that uses an LED light source are sequentially arranged. Lens 29, on the optical path O5 in the reflection direction of the dichroic mirror,
A split projection system 30 is arranged. The split projection system 30 is similar to that of the first embodiment, and the two-hole diaphragm 7, the lens 8 and the split plate 1 are arranged from the lens 29 side.
0, a light source 11, and a split plate 1
0 and the light source 11 move as shown by arrows.
【００１３】図８はこの実施例のブロック回路構成図で
ある。中央の計算機能を持つコントローラ３１は、自覚
屈折検査レンズ２１のターレット２４、２６の入力手
段、スプリット板１０の位置入力手段３２、他覚屈折値
の入力手段３３、他覚測定釦３４等とそれぞれ接続され
ている。FIG. 8 is a block circuit diagram of this embodiment. The controller 31 having a central calculation function includes input means for the turrets 24 and 26 of the subjective refraction test lens 21, position input means 32 for the split plate 10, objective refraction value input means 33, and objective measurement button 34, respectively. It is connected.
【００１４】スプリット投影系３０はダイクロイックミ
ラー２２、自覚屈折検査レンズ２１を介して被検眼Ｅに
スプリット光束を投影し、被検者は自覚屈折検査レンズ
２１、ダイクロイックミラー２２を通して視標２３を見
ている状態で、スプリット板１０、光源１１を動かして
スプリットを合致させる。この時点で、近赤外他覚的屈
折測定手段２８によって他覚的に屈折値を測定し、可視
光による自覚値と近赤外の他覚値との関係を求める。The split projection system 30 projects the split light flux onto the eye E through the dichroic mirror 22 and the subjective refraction test lens 21, and the subject looks at the visual target 23 through the subjective refraction test lens 21 and the dichroic mirror 22. The split plate 10 and the light source 11 are moved in this state to match the splits. At this point, the near-infrared objective refraction measuring unit 28 objectively measures the refraction value to obtain the relationship between the subjective value of visible light and the objective value of the near-infrared.
【００１５】なお、他覚的屈折測定手段２８としては、
近赤外スポット光を瞳孔中心から眼底に投影し、瞳孔周
辺の複数個所から光束を取り出して撮像素子上に受光
し、それらの光束の位置関係から屈折値を演算装置で算
出する方法が採られているが、測定方式がこれに限られ
るものではないことはいうまでもない。As the objective refraction measuring means 28,
A method is adopted in which near-infrared spot light is projected from the center of the pupil to the fundus, light fluxes are extracted from multiple locations around the pupil, received on an image sensor, and the refraction value is calculated by a computing device from the positional relationship of these light fluxes. However, it goes without saying that the measurement method is not limited to this.
【００１６】なお、自他覚の測定値の差が判っていれ
ば、自覚屈折検査レンズ２１の選択は他覚的屈折測定手
段２８の測定値を使って行うことができ、被検者の応答
をそれほど用いなくとも正確な屈折測定ができる。If the difference between the measured values of the subjective objective is known, the subjective refraction test lens 21 can be selected by using the measured value of the objective refraction measuring means 28, and the response of the subject. Accurate refraction measurement is possible without using much.
【００１７】[0017]
【発明の効果】以上説明したように本発明に係る眼屈折
測定装置は、可視光による自覚的屈折値と近赤外光によ
る他覚的屈折値の差を求めることができ、この差を用い
ることによって、被検者の応答を最小限にして正確な眼
屈折測定が可能となる。As described above, the eye refraction measuring apparatus according to the present invention can obtain the difference between the subjective refraction value of visible light and the objective refraction value of near infrared light and use this difference. This enables accurate eye refraction measurement while minimizing the response of the subject.
【図１】第１の実施例の構成図である。FIG. 1 is a configuration diagram of a first embodiment.
【図２】中心開口絞りの正面図である。FIG. 2 is a front view of a central aperture stop.
【図３】２穴絞りの正面図である。FIG. 3 is a front view of a two-hole diaphragm.
【図４】フィルタの透過特性である。FIG. 4 is a transmission characteristic of a filter.
【図５】スプリット板の正面図である。FIG. 5 is a front view of a split plate.
【図６】スプリット像の説明図である。FIG. 6 is an explanatory diagram of a split image.
【図７】第２の実施例の構成図である。FIG. 7 is a configuration diagram of a second embodiment.
【図８】第２の実施例のブロック回路構成図である。FIG. 8 is a block circuit configuration diagram of a second embodiment.
２ 穴あきミラー ５ 撮像素子 ６ テレビカメラ ７ ２穴絞り １０ スプリット板 １１ 光源 １２ 演算装置 ２１ 自覚屈折検査レンズ ２２ ダイクロイックミラー ２３ 視標 ２８ 他覚的屈折測定手段 ３０ スプリット投影系 ３１ コントローラ 2 Mirror with a hole 5 Image sensor 6 Television camera 7 2 Aperture 10 Split plate 11 Light source 12 Arithmetic device 21 Subjective refraction test lens 22 Dichroic mirror 23 Target 28 Objective refraction measuring means 30 Split projection system 31 Controller
Claims (1)
する指標投影系と、該指標の視度を被検者が調節する調
節手段と、近赤外光で光位置センサにより他覚的に眼屈
折測定を行う他覚屈折測定手段と、前記調節手段の状態
と前記他覚屈折測定手段による測定値とから自覚的屈折
値と他覚的屈折値の差を求める演算手段と有することを
特徴とする眼屈折測定装置。Claim: What is claimed is: 1. An index projection system for projecting an index from two positions of a pupil by visible light, an adjusting means for adjusting a diopter of the index by a subject, and a near infrared light. The difference between the subjective refraction value and the objective refraction value is obtained from the objective refraction measuring means for objectively measuring the eye refraction by the position sensor, and the state of the adjusting means and the measurement value by the objective refraction measuring means. An eye refraction measuring device comprising: an arithmetic unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208497A JPH0531074A (en) | 1991-07-25 | 1991-07-25 | Eye refraction measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208497A JPH0531074A (en) | 1991-07-25 | 1991-07-25 | Eye refraction measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0531074A true JPH0531074A (en) | 1993-02-09 |
Family
ID=16557141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3208497A Pending JPH0531074A (en) | 1991-07-25 | 1991-07-25 | Eye refraction measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0531074A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1444945A1 (en) * | 2001-11-13 | 2004-08-11 | Kabushiki Kaisha TOPCON | Optometric device |
| JP2007097873A (en) * | 2005-10-05 | 2007-04-19 | Topcon Corp | Ocular optical characteristic measuring apparatus |
| CN106444028A (en) * | 2016-09-27 | 2017-02-22 | 成都虚拟世界科技有限公司 | Near-to-eye display system and virtual reality equipment |
-
1991
- 1991-07-25 JP JP3208497A patent/JPH0531074A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1444945A1 (en) * | 2001-11-13 | 2004-08-11 | Kabushiki Kaisha TOPCON | Optometric device |
| EP1444945A4 (en) * | 2001-11-13 | 2009-04-01 | Topcon Corp | Optometric device |
| JP2007097873A (en) * | 2005-10-05 | 2007-04-19 | Topcon Corp | Ocular optical characteristic measuring apparatus |
| CN106444028A (en) * | 2016-09-27 | 2017-02-22 | 成都虚拟世界科技有限公司 | Near-to-eye display system and virtual reality equipment |
| CN106444028B (en) * | 2016-09-27 | 2019-11-19 | 成都虚拟世界科技有限公司 | A kind of near-eye display system and virtual reality device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6153052B2 (en) | ||
| JPH0646995A (en) | Eye refractometer | |
| JPH067298A (en) | Ocular refractometer | |
| JPH0531074A (en) | Eye refraction measuring device | |
| JPH0417048B2 (en) | ||
| JP3206936B2 (en) | Eye refractometer | |
| JPH0984760A (en) | Positioning detection device for ophthalmic equipment | |
| JP2945092B2 (en) | Eye refractometer | |
| JPS5829447A (en) | Apparatus for monitoring gaze of eye to be inspected in ophthalmic machine | |
| JPH0556922A (en) | Ophthalmometer | |
| JP2707337B2 (en) | Corneal shape measuring device | |
| JPH049135A (en) | Eye refraction meter | |
| JPS6153055B2 (en) | ||
| JP2951991B2 (en) | Eye refractometer | |
| JPS6159134B2 (en) | ||
| JPH08172555A (en) | Image pickup device | |
| JPH0473040A (en) | Ophthalmologic measuring apparatus | |
| JPH0373128A (en) | Eye refractometer | |
| JPH02305544A (en) | Three-dimensional measuring eyeground camera | |
| JPH09168513A (en) | Ocular refraction measuring instrument | |
| JPS6219851B2 (en) | ||
| JPS6129727B2 (en) | ||
| JPH04269640A (en) | Automatic lens meter | |
| JPH06335453A (en) | Ocular refractometer | |
| JPS6012035A (en) | Eye refractive index measuring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070118 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20070130 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A521 | Written amendment |
Effective date: 20070330 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A02 | Decision of refusal |
Effective date: 20070612 Free format text: JAPANESE INTERMEDIATE CODE: A02 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070727 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20070815 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20071023 |
|
| A61 | First payment of annual fees (during grant procedure) |
Effective date: 20071105 Free format text: JAPANESE INTERMEDIATE CODE: A61 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101122 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111122 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 4 Free format text: PAYMENT UNTIL: 20111122 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 5 Free format text: PAYMENT UNTIL: 20121122 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121122 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 6 Free format text: PAYMENT UNTIL: 20131122 |