JPS587224A - Eye point measuring apparatus during work - Google Patents
Eye point measuring apparatus during workInfo
- Publication number
- JPS587224A JPS587224A JP56105849A JP10584981A JPS587224A JP S587224 A JPS587224 A JP S587224A JP 56105849 A JP56105849 A JP 56105849A JP 10584981 A JP10584981 A JP 10584981A JP S587224 A JPS587224 A JP S587224A
- Authority
- JP
- Japan
- Prior art keywords
- measuring device
- plate
- eye point
- optotype
- point measuring
- 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
- Length Measuring Devices By Optical Means (AREA)
- Eye Examination Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、眼鏡をかけて読書その他テーブル作業等を行
う場合の眼鏡レンズに対する眼の視線通過点を測定する
アイポイント測定装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an eye point measuring device for measuring the line of sight passing point of the eye relative to the eyeglass lens when reading or doing table work while wearing eyeglasses.
近年、国民の”高令化に伴い老眼用レンズ特に多焦点レ
ンズが普及して来た。老眼用単焦点レンズは勿論、多焦
点レンズや遠用近用の境目b;累進的に変化する累進レ
ンズのうち特に近用部分が狭いレンズの場合には、この
近用部の光学中心を左右両眼の視線が夫々通過するよう
に正確に枠入れ調整が行われなければならない。それ故
、眼鏡レンズ上の近用視線通過点(アイポイント)をレ
ンズの枠入れ前或は枠入れ後に簡単にしかも精度よく測
定する必要がある。In recent years, as the population has become older, presbyopic lenses, especially multifocal lenses, have become popular. If the lens has a particularly narrow near vision area, the frame must be adjusted accurately so that the line of sight of both eyes passes through the optical center of this near vision area. It is necessary to easily and accurately measure the near viewing point (eye point) on the lens before or after the lens is inserted into the frame.
このため、従来性われていたスチールによる瞳孔距離の
測定にかえて、東心に小円の視標をもつ円形の鏡とそれ
を囲むリング状照明装置を机上に設けて、眼鏡を掛けた
被検者にこの視標を斜め横から直視して貰い、その反対
側から検者がこの鏡の中心部を通して被検者の瞳部に映
する照明装置のリング像を片眼づつ観察し、予めレンズ
に印された近用部の光学中心の印と前記リング黒明像と
前記視標の3者が一致しているかどうかを検する装置が
公知である。For this reason, instead of measuring the pupil distance using a steel plate, which was conventionally used, we installed a circular mirror with a small circular target in the east center and a ring-shaped lighting device surrounding it on the desk. Have the examiner look directly at this target diagonally from the side, and from the opposite side observe the ring image of the illumination device projected onto the examinee's pupil through the center of this mirror, one eye at a time. A device is known that checks whether or not a mark of the optical center of the near vision area marked on a lens, the ring black light image, and the optotype match.
しかし乍、この公知の装置においては被検者の眼を照明
する照明光が照明装置の拡散板を斜めに通過するので、
照明効率が悪く、しかも照明光は被検者と同様に検者の
眼奪も照すことになるので、この照明光が検者の眼に入
り、検眼の邪魔になり正確な測定を困難にする欠点があ
った。However, in this known device, the illumination light that illuminates the subject's eyes passes obliquely through the diffuser plate of the illumination device.
The illumination efficiency is poor, and the illumination light illuminates the examiner's eye as well as the patient's eye, so this illumination light enters the examiner's eye, interfering with the eye examination and making accurate measurements difficult. There was a drawback.
本発明の第1の目的は、上述の従来技術の欠点を解決し
、照明に無駄がなくしかも検者側の不用な照明光を除去
して正確な測定が容易にできるようにすることにある。A first object of the present invention is to solve the above-mentioned drawbacks of the prior art, to eliminate waste in illumination, and to eliminate unnecessary illumination light from the examiner's side, thereby facilitating accurate measurements. .
この種の測定装置は被検者と検者とが鏡を介して対峙す
ることになるので、検者が鏡の中に見る被検者の瞳孔は
、検者の眼と鏡との距離の略2倍の距離にあることにな
り、従って瞳孔が小さく見え正確な測定をさまたげるこ
とになる。In this type of measuring device, the examinee and examiner face each other through a mirror, so the examiner's pupil of the examiner as seen in the mirror is determined by the distance between the examiner's eyes and the mirror. The distance is approximately twice as far, and the pupil appears small, which hinders accurate measurement.
このため瞳像な拡大視することが望ましいが、従来装置
においては鏡を凹面鏡にしても像が歪むので使用に耐え
ない。For this reason, it is desirable to enlarge the pupil image, but in conventional devices, even if the mirror is a concave mirror, the image is distorted, making it unusable.
本発明の第2の目的は上記従来の欠点を除き、被検者の
瞳像な拡大観察でき、しかもアイポイント測定が正確容
易な測定装置を得ることにある。A second object of the present invention is to eliminate the above-mentioned drawbacks of the conventional apparatus, and to provide a measuring device which enables magnified observation of a pupil image of a subject and which can accurately and easily measure eye points.
以下、本発明を図の実施例によって詳しく説明する。Hereinafter, the present invention will be explained in detail with reference to the embodiments shown in the drawings.
第1図及び2図は本発明の実施例を示すもので、第1図
は断面図、第2図はその平面図である。1 and 2 show an embodiment of the present invention, with FIG. 1 being a sectional view and FIG. 2 being a plan view thereof.
円形の透明板1の中央に小円視標2が設けられ、この視
標2を中心として、輪帯状拡散板5、反射板4及び蛍光
灯5から成る輪帯状照明装置が、ケース6の上板7に設
けられた円形の開口を蔽う直配透明板1の裏側に設けら
れている。ケース6の下板8の内側底部に平面鏡9が固
設されている。また上板7と下板8は蝶番10によって
開閉可能になっており、鏡9に対して透明板1が任意の
傾斜角をもって保持されるように(第4図参照)リンク
機構をもつ上板支持金具11がケース6の外側に設けら
れている。符号12は上板が開かないようにするための
掛金である。A small circular optotype 2 is provided in the center of the circular transparent plate 1, and an annular illumination device consisting of an annular diffuser plate 5, a reflector 4, and a fluorescent lamp 5 is mounted on the case 6, with this optotype 2 as the center. It is provided on the back side of the direct transparent plate 1 that covers the circular opening provided in the plate 7. A plane mirror 9 is fixed to the inner bottom of the lower plate 8 of the case 6. The upper plate 7 and the lower plate 8 can be opened and closed by hinges 10, and the upper plate has a link mechanism so that the transparent plate 1 can be held at an arbitrary angle of inclination with respect to the mirror 9 (see Fig. 4). A support fitting 11 is provided on the outside of the case 6. Reference numeral 12 is a latch for preventing the top plate from opening.
第5図は、第1図の透明板1の中央に収斂作用をなすレ
ンズ1aを設け、このレンズの頂点に視標2を設けた別
の実施例を示すものである。FIG. 5 shows another embodiment in which a lens 1a having a convergence effect is provided in the center of the transparent plate 1 of FIG. 1, and an optotype 2 is provided at the apex of this lens.
この場合レンズ1aは検者用ルーペとして使用されるも
ので、その焦点距離は、30511及至50国のものが
設けられる。また透明板が硬質プラスチックスで構成さ
hる場合にはレンズ及び餌記輪帯状拡散板を共に一体に
形成してもよい。In this case, the lens 1a is used as a magnifying glass for the examiner, and its focal lengths range from 30,511 to 50 countries. Further, when the transparent plate is made of hard plastic, the lens and the annular diffuser plate may be formed integrally.
第4図は本実施例装置の使用状態を示す説明図である。FIG. 4 is an explanatory diagram showing the usage state of the device of this embodiment.
図の如く、被検者21と検者22がテーブル上に置かれ
たケース6を挟んで対峙し、被検者は読書その他通常の
テーブル作業の姿勢で、透明板1が正対するように上板
7を傾斜させる。このとき上板7は、支持金具11の摩
擦力により任意の傾斜角で支持される。このような状態
のもとに、被検者が眼鏡25を通して視標2を両眼で直
視すると、検者22側からは被検者の瞳位置に輪帯状拡
散板3の縮小された像が見られる。従来の装置では、輪
帯状拡散板が被検者の眼に正対(視軸に垂直)していな
いので、被検者の瞳位置に映る輪帯状拡散板の像は楕円
形に検者側から観察されるが、本実施例の装置において
は、円形の明瞭な像を反射鏡9を介して観察できる。そ
こで検者は、被検者の片眼づつについて、その瞳位置の
輪帯状拡散板像と視標2とが重なって見えるようにし、
その時予め眼鏡レンズに印点されている近用レンズの光
学中心の点も前記拡散板像のリング中心に在るかどうか
を検査し、離れている場合その離心寸法を測定する。こ
のような検査を両眼について行い、夫々のレンズの近用
光学中心と近用時の視線通過点との位置関係を正確に検
査することb”−できる。この場合、瞳位置の角膜頂点
の曲率半径が小さいので、角膜で反射される前記の拡散
板像も極めて小さい。それ故、躬述の検査を正確に行う
ためには被検眼上の拡散板像や眼鏡レンズの光学中心を
拡大して観察できるようにすることが望ましい。第4図
は、レンズを透明板中央に設け、これを通して被検者の
瞳の拡大像を観察している状況を示している。このレン
ズの焦点近傍に被検者の瞳位置を置くのが望ましい故、
作業距離に応じて焦点距離の異るレンズを差し変えるよ
うに構成してもよい。As shown in the figure, a subject 21 and an examiner 22 face each other with a case 6 placed on a table in between, and the subject is in the posture of reading or other normal table work, with the transparent plate 1 facing directly. The plate 7 is tilted. At this time, the upper plate 7 is supported at an arbitrary inclination angle by the frictional force of the support fitting 11. Under such conditions, when the examinee looks directly at the optotype 2 with both eyes through the glasses 25, a reduced image of the annular diffuser plate 3 is seen at the examinee's pupil position from the examiner 22 side. Can be seen. In conventional devices, the annular diffuser plate is not directly facing the examinee's eyes (perpendicular to the visual axis), so the image of the annular diffuser plate reflected at the examinee's pupil position is elliptical toward the examiner. However, in the apparatus of this embodiment, a clear circular image can be observed through the reflecting mirror 9. Therefore, for each eye of the subject, the examiner makes the annular diffuser image at the pupil position overlap with optotype 2,
At this time, it is checked whether the optical center point of the near lens, which has been marked in advance on the eyeglass lens, is also located at the center of the ring of the diffuser plate image, and if it is far away, its eccentricity is measured. It is possible to perform such an examination on both eyes to accurately examine the positional relationship between the optical center of each lens for near vision and the line of sight passage point during near vision.In this case, the corneal apex at the pupil position can be accurately examined. Since the radius of curvature is small, the diffuser image reflected by the cornea is also extremely small.Therefore, in order to perform the above-mentioned test accurately, the diffuser image on the subject's eye and the optical center of the spectacle lens must be magnified. It is desirable to be able to observe the subject's pupil through a lens provided at the center of the transparent plate. Since it is desirable to place the subject's pupil position,
It may be configured to replace lenses with different focal lengths depending on the working distance.
以上の如く本発明によれば、輪帯状照明装置の輪帯状拡
散板が被検者の瞳に正対するので、読書等の実際の近東
状態と同一状態で検査できるとともに、照明効率がよく
、しかも被検眼の瞳位置に映する明るい円形の輪帯な観
察できるので、眼鏡の近用レンズ光学中心と視線を一致
させるためのレンズ調整作業が容易且正確に行うことが
できる。なお照明装置は反射板を有し、照明光を被検者
側に効率よく反射するが検者2側への光を遮蔽するので
、検者は照明光に邪魔されずに測定をすることができる
。さらに、本発明の装置は、使用しない場合には上板と
下板とを平行位置に回動してコンパクトにしまいこむこ
とが出来るため携帯に便利であり、鏡の表面にホコリが
付着するのを防ぐこともできる。As described above, according to the present invention, since the annular diffuser of the annular illumination device directly faces the examinee's eyes, the examination can be performed in the same state as the actual Near Eastern state such as reading, and the illumination efficiency is high. Since the bright circular zone reflected at the pupil position of the subject's eye can be observed, lens adjustment work to align the optical center of the near lens of the glasses with the line of sight can be easily and accurately performed. The illumination device has a reflector that efficiently reflects the illumination light toward the subject, but blocks the light toward the examiner 2, so the examiner can take measurements without being hindered by the illumination light. can. Furthermore, when the device of the present invention is not in use, the upper and lower plates can be rotated to parallel positions and stored compactly, making it convenient to carry and preventing dust from adhering to the surface of the mirror. It can also be prevented.
第1図は本発明の実施例を示す断面図、第2図はその平
面図、第3図は本発明の別の実施例の部分断面図である
。第4図は本発明の実施例装置の使用状態を示す説明図
である。
〔主要部分の符号の説明〕
1・・・・・・透明部材、1m・・・・・レンズ、2・
・・・・・視標5〜5・・・・・・輪帯状照明装置、6
・・・・・・ケース、7・・・・・・上板、8・・・・
・・下板、?・・・・・・平面鏡出願人 日本光学工業
株式会社
代理人 渡 辺 隆 男FIG. 1 is a sectional view showing an embodiment of the invention, FIG. 2 is a plan view thereof, and FIG. 3 is a partial sectional view of another embodiment of the invention. FIG. 4 is an explanatory diagram showing the usage state of the apparatus according to the embodiment of the present invention. [Explanation of symbols of main parts] 1...Transparent member, 1m...Lens, 2...
...Visual targets 5-5...Annular illumination device, 6
...Case, 7...Top plate, 8...
...lower board? ...Plane mirror applicant Takashi Watanabe, agent of Nippon Kogaku Kogyo Co., Ltd.
Claims (1)
下板の一端に前記平面鏡に対して傾斜支持可能に軸支さ
れた上板とを設け、中央部に視標を有する透明部材をも
って前記開口を蔽うと共に、該視標を中心とする輪帯状
照明装置を上板に設けて、前記下板と反対の方へ照明光
を供給する如く構成したことを特徴とする近業時のアイ
ポイント測定装置。 (2、特許請求の範囲第1項記載の測定装置において、
前記透明部材(1)は中央部を収斂作用をなすレンズ(
1a)に形成され、その頂点に前記視標(2)が設けら
れていることを特徴とする近業時のアイポイント測定装
置。 (5)特許請求の範囲第1項記載の測定装置において、
前記上板C力と下板(8)をもって角形ケースに形成し
、前記輪帯状照明装置(5〜5)と平面鏡(9)が該ケ
ースに内蔵される如く構成されていることを特徴とする
近東時のアイポイント測定装置。 (4)特許請求の範囲一1項記載の測定装置において、
前記輪帯状照明装置は、少くとも輪帯状に形成された拡
散板(5)、反射板(4)及び蛍光灯(5)を有し、前
記平面鏡(9)が直接照射されないように構成されてい
ることを特徴とする近!時のアイポイント測定装置。[Scope of Claims] (1) A lower plate that supports a plane mirror, and an upper plate that has an opening and is pivotally supported at one end of the lower plate so as to be able to support the plane mirror in an inclined manner; The opening is covered with a transparent member having an optotype, and an annular illumination device centered on the optotype is provided on the upper plate to supply illumination light in a direction opposite to the lower plate. An eye point measuring device for close work. (2. In the measuring device according to claim 1,
The transparent member (1) has a converging lens (
1a), and the optotype (2) is provided at the apex thereof. (5) In the measuring device according to claim 1,
The upper plate C force and the lower plate (8) are formed into a rectangular case, and the annular illumination device (5-5) and the plane mirror (9) are built into the case. Eye point measuring device from the Near East. (4) In the measuring device according to claim 1,
The annular illumination device includes at least a diffuser plate (5), a reflection plate (4), and a fluorescent lamp (5) formed in an annular shape, and is configured so that the plane mirror (9) is not directly irradiated. Nearby characterized by being there! Time eye point measuring device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56105849A JPS587224A (en) | 1981-07-07 | 1981-07-07 | Eye point measuring apparatus during work |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56105849A JPS587224A (en) | 1981-07-07 | 1981-07-07 | Eye point measuring apparatus during work |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS587224A true JPS587224A (en) | 1983-01-17 |
Family
ID=14418447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56105849A Pending JPS587224A (en) | 1981-07-07 | 1981-07-07 | Eye point measuring apparatus during work |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS587224A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57194437A (en) * | 1981-05-27 | 1982-11-30 | Toshiba Corp | Color picture tube |
JPS60257042A (en) * | 1984-05-25 | 1985-12-18 | アールシーエー ライセンシング コーポレーシヨン | Color picture tube |
US4636683A (en) * | 1983-03-10 | 1987-01-13 | Tokyo Shibaura Denki Kabushiki Kaisha | Color cathode-ray tube having shadow mask with variable sized apertures |
-
1981
- 1981-07-07 JP JP56105849A patent/JPS587224A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57194437A (en) * | 1981-05-27 | 1982-11-30 | Toshiba Corp | Color picture tube |
US4636683A (en) * | 1983-03-10 | 1987-01-13 | Tokyo Shibaura Denki Kabushiki Kaisha | Color cathode-ray tube having shadow mask with variable sized apertures |
JPS60257042A (en) * | 1984-05-25 | 1985-12-18 | アールシーエー ライセンシング コーポレーシヨン | Color picture tube |
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