JPH07194545A - Subjective optometer - Google Patents
Subjective optometerInfo
- Publication number
- JPH07194545A JPH07194545A JP6282706A JP28270694A JPH07194545A JP H07194545 A JPH07194545 A JP H07194545A JP 6282706 A JP6282706 A JP 6282706A JP 28270694 A JP28270694 A JP 28270694A JP H07194545 A JPH07194545 A JP H07194545A
- Authority
- JP
- Japan
- Prior art keywords
- eye
- subjective
- examination
- examined
- variable
- 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.)
- Granted
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、眼科医院等において眼
の屈折度等を測定するための自覚検眼装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subjective eye examination apparatus for measuring the refractive index of the eye in an ophthalmology clinic.
【０００２】[0002]
【従来の技術】従来からこの種の装置において、自覚検
査用のレンズと被検眼とを正確に位置合せできる自覚検
眼装置が求められている。従来においては、検者が正面
に立ってそこからレンズと被検眼とを見て位置合わせし
ていたが、その間では被検者に視標が見えないので、自
覚検査中は位置合わせの状態を観察できないという問題
点がある。2. Description of the Related Art Conventionally, in this type of apparatus, there is a demand for a subjective eye examination apparatus capable of accurately aligning a lens for subjective examination with an eye to be examined. In the past, the examiner stood in front and aligned with the lens and the eye to be examined, but during that time, the subject could not see the optotype, so during the subjective examination, the alignment state should be maintained. There is a problem that it cannot be observed.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、自覚
検査の有無に拘わらず被検眼と自覚検査用のレンズとの
正確な位置合わせ状態の観察が行え、検査精度の高い自
覚検眼装置を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a subjective eye examination apparatus having a high examination accuracy, which enables observation of an accurate alignment state between an eye to be inspected and a lens for the subjective examination regardless of the presence or absence of the subjective examination. To provide.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る自覚検眼装置は、被検眼に対して視標を
提示しかつ該視標視度が可変である自覚検査用光学系
と、該自覚検査用光学系の前記視標への光路から分岐し
た光路に配置した前眼部観察用の撮像手段と、該撮像手
段からの出力により前記自覚検査用光学系を介した被検
眼の前眼部像を前記自覚検査用光学系の位置を示す映像
と共に映出するモニタ手段とを有することを特徴とす
る。SUMMARY OF THE INVENTION To achieve the above object, a subjective eye examination apparatus according to the present invention presents an optotype to an eye to be inspected and an optical system for a subjective examination which has a variable diopter. And an imaging means for observing the anterior segment of the eye arranged in an optical path branched from the optical path of the subjective examination optical system to the visual target, and an eye to be examined via the subjective examination optical system by an output from the imaging means. And an anterior ocular segment image together with an image showing the position of the subjective examination optical system.
【０００５】[0005]
【作用】上述の構成を有する自覚検眼装置は、被検眼の
前眼部像と自覚検査用光学系の位置の映像を共にモニタ
手段に映出し、これらを合わせるようにアライメントを
行う。The subjective optometry apparatus having the above-described structure projects both the anterior segment image of the eye to be examined and the image of the position of the subjective examination optical system on the monitor means, and performs alignment so as to match them.
【０００６】[0006]
【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は本発明に係る自覚検眼装置の一実施例を示
し、被検眼Ｅに対向して可変焦点光学部材１が配置さ
れ、その後方の光軸O1上に光分割部材２、自覚検出用の
視標３が配置され、可変焦点光学部材１、光分割部材２
は筐体４に支持されている。光分割部材２の反射方向に
は、測定部５及び観察用近赤外テレビカメラ６を内蔵す
る他覚屈折計７が配置され、この他覚屈折計７は筐体４
上に移動機構８を介して載置されている。可変焦点光学
部材１は例えばシリコン等の透明な弾性物質で造られ、
その周縁を金属リング１ａで押えると曲率半径が変っ
て、焦点距離を変化できるようにされ、光分割部材２は
例えば近赤外光を反射し、可視光を透過するダイクロイ
ックミラーが用いられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 shows an embodiment of a subjective eye examination apparatus according to the present invention, in which a variable focus optical member 1 is arranged facing an eye E to be examined, and a light splitting member 2 for detecting subjective awareness is arranged on an optical axis O1 behind the variable focus optical member 1. The optotype 3 is arranged, and the variable focus optical member 1 and the light splitting member 2 are arranged.
Are supported by the housing 4. In the reflection direction of the light splitting member 2, an objective refractometer 7 having a measuring unit 5 and a near-infrared television camera 6 for observation is arranged.
It is placed on the upper side via the moving mechanism 8. The variable focus optical member 1 is made of a transparent elastic material such as silicon,
The radius of curvature is changed by pressing the periphery with the metal ring 1a so that the focal length can be changed. For the light splitting member 2, for example, a dichroic mirror that reflects near infrared light and transmits visible light is used. .
【０００７】他覚屈折計７は移動機構８により筐体４上
を動かすことにより、アライメントを行うことができ、
かつ距離を不変に保つことができる。被検眼Ｅは可変焦
点光学部材１及び光分割部材２を通して前方の視標３を
見るようになっている。この場合に、光分割部材２及び
可変焦点光学部材１は、筐体４と一体になっていること
が必要であるが、視標３は必ずしも装置内に設置する必
要はない。更に、被検眼Ｅと可変焦点光学部材１との間
の適当な個所、例えば図示のように可変焦点光学部材１
の金属リング１ａに、テレビカメラ６用の例えば発光タ
イオード等から成る近赤外照明光源９が設けられてい
る。図２はテレビカメラ６による画面Ｓを示し、１ｂは
可変焦点光学部材１の縁部、Epは被検眼Ｅの瞳孔であ
る。The objective refractometer 7 can be aligned by moving the casing 4 by the moving mechanism 8.
And the distance can be kept unchanged. The eye E to be inspected is configured to see the optotype 3 in front through the variable focus optical member 1 and the light splitting member 2. In this case, the light splitting member 2 and the variable focus optical member 1 need to be integrated with the housing 4, but the visual target 3 does not necessarily have to be installed in the device. Further, an appropriate place between the eye E and the variable focus optical member 1, for example, the variable focus optical member 1 as shown in the figure.
The metal ring 1a is provided with a near-infrared illumination light source 9 for the TV camera 6, which is composed of, for example, a light emitting diode. FIG. 2 shows a screen S by the television camera 6, 1b is an edge portion of the variable focus optical member 1, and Ep is a pupil of the eye E to be inspected.
【０００８】自覚検査の場合には、可変焦点光学部材１
の縁部１ｂに対して瞳孔Epがほぼ中心にくるようにアラ
イメントすればよい。このとき、図１の紙面に垂直の横
方向は可変焦点光学部材１を筐体４に対して動かし、上
下方向は筐体４自体を動かせばよい。なお、このアライ
メント精度は他覚測定と異なって光束が大きいために、
少々雑であっても実用上支障はない。In the case of a subjective test, the variable focus optical member 1
The pupil Ep may be aligned so as to be substantially centered with respect to the edge 1b. At this time, the varifocal optical member 1 may be moved with respect to the housing 4 in the lateral direction perpendicular to the plane of FIG. 1, and the housing 4 itself may be moved in the vertical direction. This alignment accuracy is different from objective measurement because the luminous flux is large,
There is no practical problem even if it is a little rough.
【０００９】双眼で自覚検査を行う装置では、可変焦点
光学部材１は左右にそれぞれ１個ずつ配備され、瞳孔距
離に合わせるために可変焦点光学部材１を横方向に動か
す構造となっている。自覚屈折測定は可変焦点光学部材
１の焦点距離を変えて行われ、被検眼Ｅと可変焦点光学
部材１との距離の調節は、従来のように横方向から隙間
を見てもよいが、テレビカメラ６による画面Ｓを見なが
ら額当ての位置を調節すればよい。In a device for performing a subjective examination with a binocular, one varifocal optical member 1 is provided on each of the left and right sides, and the varifocal optical member 1 is laterally moved to match the pupil distance. The subjective refraction measurement is performed by changing the focal length of the varifocal optical member 1. The distance between the eye E to be inspected and the varifocal optical member 1 may be adjusted by looking at the gap from the lateral direction as in the conventional case. The position of the forehead rest may be adjusted while looking at the screen S by the camera 6.
【００１０】他覚検査の位置合わせは、テレビカメラ６
の画面Ｓを見ながら、他覚屈折計７を移動機構８により
筐体４上で動かし、テレビカメラ６の中の光軸中心にあ
るマークＭが瞳孔Epの中心に至るように合わせる。他覚
測定は小さな光束径で被検眼Ｅに投影されるために、ア
ライメント精度を高くする必要がある。このため、移動
機構８としてはガイドレール上を動くような摺動機構を
採用すれば、アライメントを相当に精度良く行うことが
できる。光軸O1方向の位置合わせは、自覚検査の場合と
同様に額当てを調整して顔を装置に対して動かし、画面
Ｓで瞳孔Epがぼけない位置に合わせるようにすればよ
い。測定部５からの近赤外光は光分割部材２、可変焦点
光学部材１を経て被検眼Ｅの眼底Erに投影され、その反
射光は他覚屈折計７において光電的に処理され他覚的屈
折値が得られる。The alignment of the objective test is performed by the television camera 6
While looking at the screen S, the objective refractometer 7 is moved on the housing 4 by the moving mechanism 8 so that the mark M at the center of the optical axis in the television camera 6 reaches the center of the pupil Ep. Since the objective measurement is projected onto the eye E with a small light beam diameter, it is necessary to improve the alignment accuracy. Therefore, if a sliding mechanism that moves on the guide rail is adopted as the moving mechanism 8, the alignment can be performed with considerable accuracy. The alignment in the direction of the optical axis O1 may be performed by adjusting the forehead support and moving the face with respect to the device, as in the case of the subjective examination, so that the pupil Ep is aligned on the screen S at a position where the pupil Ep is not blurred. The near-infrared light from the measurement unit 5 is projected on the fundus Er of the eye E through the light splitting member 2 and the variable focus optical member 1, and the reflected light is photoelectrically processed by the objective refractometer 7 and objectively. The refraction value is obtained.
【００１１】図１の場合に、他覚測定の場合の測定部５
から光分割部材２に至る光軸O2は可変焦点光学部材１に
よる反射光を除去するために、光軸O1に対して若干傾け
てあるが、これらを合致させ、その代りに可変焦点光学
部材１を傾けるようにしても可変焦点光学部材１の反射
光を除去することができる。In the case of FIG. 1, the measuring unit 5 for objective measurement.
The optical axis O2 from the light splitting member 2 to the light splitting member 2 is slightly tilted with respect to the optical axis O1 in order to remove the reflected light from the varifocal optical member 1. The reflected light of the varifocal optical member 1 can be removed even by tilting.
【００１２】近赤外照明光源９を被検眼Ｅと可変焦点光
学部材１との間に設けると、可変焦点光学部材１の反射
がないので好都合であり、また近赤外光なので被検眼Ｅ
にとって眩しくはない。If the near-infrared illumination light source 9 is provided between the eye E to be examined and the variable-focus optical member 1, it is convenient because there is no reflection of the variable-focus optical member 1, and since it is near-infrared light, the eye E to be examined E is also included.
Not dazzling to me.
【００１３】従来の場合は、検者は光軸O1の方向から覗
いて被検眼Ｅの中心を確認しているため、測定中は確認
できないということになるが、本実施例の場合は測定中
においても、例えば被検者が眼を細めていないかなどを
テレビカメラ６の画面Ｓにおいて監視をすることができ
る。In the conventional case, the examiner looks into the direction of the optical axis O1 and confirms the center of the eye E, so that it cannot be confirmed during the measurement. Also in this case, for example, it is possible to monitor on the screen S of the television camera 6 whether or not the subject is squinting.
【００１４】なお、可変焦点光学部材１は一例を示した
ものであり、その他に通常のように焦点距離の異なるレ
ンズを入れ換えるような構造のものを用いてもよい。The varifocal optical member 1 is shown as an example, and a varifocal optical member 1 having a structure in which lenses having different focal lengths are replaced may be used.
【００１５】[0015]
【発明の効果】以上説明したように本発明に係る自覚検
眼装置は、自覚検査用光学系を介した被検眼の前眼部像
を、自覚検査用光学系の位置を示す映像と共に映出する
モニタ手段によって、操作者はモニタ手段を見ながら正
確に被検眼と自覚検査用のレンズとの位置合わせ状態を
自覚検査の有無に拘わらず観察できるようになる。As described above, the subjective eye examination apparatus according to the present invention projects the anterior ocular segment image of the eye to be examined through the subjective examination optical system together with the image showing the position of the subjective examination optical system. The monitor means enables the operator to accurately observe the alignment state of the eye to be inspected and the lens for the subjective examination with or without the subjective examination while looking at the monitor means.
【図１】光学的構成図である。FIG. 1 is an optical configuration diagram.
【図２】テレビカメラの画面の正面図である。FIG. 2 is a front view of the screen of the television camera.
１ 可変焦点光学部材 １ａ 金属リング １ｂ 縁部 ２ 光分割部材 ３ 視標 ４ 筐体 ５ 測定部 ６ テレビカメラ ７ 他覚屈折計 ８ 移動機構 ９ 照明光源 DESCRIPTION OF SYMBOLS 1 Variable focus optical member 1a Metal ring 1b Edge 2 Light splitting member 3 Visual target 4 Housing 5 Measuring part 6 Television camera 7 Objective refractometer 8 Moving mechanism 9 Illumination light source
Claims (2)
視度が可変である自覚検査用光学系と、該自覚検査用光
学系の前記視標への光路から分岐した光路に配置した前
眼部観察用の撮像手段と、該撮像手段からの出力により
前記自覚検査用光学系を介した被検眼の前眼部像を前記
自覚検査用光学系の位置を示す映像と共に映出するモニ
タ手段とを有することを特徴とする自覚検眼装置。1. An optical system for subjective examination, which presents a visual target to an eye to be inspected and whose diopter is variable, and an optical path branched from an optical path to the visual target of the optical system for subjective examination. Imaging means for observing the anterior segment of the eye, and an image of the anterior segment of the eye to be inspected by the output from the imaging means through the subjective examination optical system together with an image showing the position of the subjective examination optical system. An optometry apparatus for consciousness of eyes.
は自覚検査用光学系の縁部とした請求項１に記載の自覚
検眼装置。2. The subjective eye examination apparatus according to claim 1, wherein the image showing the position of the subjective examination optical system is at the edge of the subjective examination optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6282706A JP3027513B2 (en) | 1994-10-21 | 1994-10-21 | Eye refraction measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6282706A JP3027513B2 (en) | 1994-10-21 | 1994-10-21 | Eye refraction measuring device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61191905A Division JPS6349130A (en) | 1986-08-16 | 1986-08-16 | Subjective and objective refractometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07194545A true JPH07194545A (en) | 1995-08-01 |
| JP3027513B2 JP3027513B2 (en) | 2000-04-04 |
Family
ID=17655996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6282706A Expired - Lifetime JP3027513B2 (en) | 1994-10-21 | 1994-10-21 | Eye refraction measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3027513B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107788946A (en) * | 2016-09-05 | 2018-03-13 | 尼德克株式会社 | Subjective formula optometry equipment and subjective formula optometry program |
| EP3298950A3 (en) * | 2016-09-05 | 2018-06-13 | Nidek Co., Ltd | Subjective optometry apparatus and subjective optometry program |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164541A (en) * | 1985-01-18 | 1986-07-25 | 株式会社トプコン | Eye refractive force measuring apparatus |
-
1994
- 1994-10-21 JP JP6282706A patent/JP3027513B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164541A (en) * | 1985-01-18 | 1986-07-25 | 株式会社トプコン | Eye refractive force measuring apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107788946A (en) * | 2016-09-05 | 2018-03-13 | 尼德克株式会社 | Subjective formula optometry equipment and subjective formula optometry program |
| KR20180027333A (en) * | 2016-09-05 | 2018-03-14 | 가부시키가이샤 니데크 | Subjective optometric apparatus and subjective optometric program |
| EP3298950A3 (en) * | 2016-09-05 | 2018-06-13 | Nidek Co., Ltd | Subjective optometry apparatus and subjective optometry program |
| US10264967B2 (en) | 2016-09-05 | 2019-04-23 | Nidek Co., Ltd. | Subjective optometry apparatus and subjective optometry program |
| CN107788946B (en) * | 2016-09-05 | 2022-02-11 | 尼德克株式会社 | Subjective optometry device and subjective optometry program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3027513B2 (en) | 2000-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |