JPS6352892B2 - - Google Patents
Info
- Publication number
- JPS6352892B2 JPS6352892B2 JP59028595A JP2859584A JPS6352892B2 JP S6352892 B2 JPS6352892 B2 JP S6352892B2 JP 59028595 A JP59028595 A JP 59028595A JP 2859584 A JP2859584 A JP 2859584A JP S6352892 B2 JPS6352892 B2 JP S6352892B2
- Authority
- JP
- Japan
- Prior art keywords
- optotype
- pattern
- eye
- left eye
- optotypes
- 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
Links
- 238000007689 inspection Methods 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は、眼科病院や運転免許試験場等で使用
される被検眼の立体視機能をテストするための立
体視検査装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stereoscopic vision testing device for testing the stereoscopic vision function of a subject's eye, which is used in eye hospitals, driver's license exam centers, and the like.
従来、被検眼の立体視機能をテストする装置と
しては三杆計が知られているが、この三杆計は被
検眼から約2.5m離れた所に２本の固定棒を並べ
て配置し、その２本の固定棒が並ぶ面に移動棒を
合致させるという方式のものであるため、かなり
大きなスペースを要するという欠点を有してい
る。 Conventionally, the three-rod meter is known as a device for testing the stereoscopic vision function of the eye being examined. Since the movable rod is aligned with the surface where two fixed rods are lined up, it has the disadvantage of requiring a considerable amount of space.
その他にも、定性・半定量的テスト法として、
偏光メガネとチトマスステレオ視標を使う方法が
知られているが、この場合は定量的測定が不可能
である。 In addition, as a qualitative/semi-quantitative test method,
A method using polarized glasses and Titomas stereo optotypes is known, but quantitative measurements are not possible in this case.
本発明の目的は、このような従来方法の欠点を
改善し、スペースを余り必要とせず、しかも定量
的測定を容易になし得る立体視検査装置を提供す
ることにあり、その要旨は、左眼と右眼を結ぶ方
向に間隔をあけて配置した第１、第２のパターン
を有し左眼にレンズを通して呈示する左眼用視標
と、該左眼用視標と同一形状の第１、第２のパタ
ーンを有し右眼に前記レンズを通して呈示すると
共に前記左眼用視標と並べて配置した右眼用視標
と、これらの左眼用、右眼用視標の少なくとも一
方の視標の前記第１のパターンと第２のパターン
の左眼と右眼を結ぶ方向の間隔を電気的表示手段
を用いて変化させることにより、前記第１、第２
のパターンの見かけ上の距離を変化させる手段と
を備えたことを特徴とするものである。 The purpose of the present invention is to improve the drawbacks of such conventional methods, and to provide a stereoscopic vision inspection device that does not require much space and can easily perform quantitative measurements. a left-eye optotype that is presented to the left eye through a lens and has first and second patterns spaced apart in a direction connecting the right eye; a first optotype that has the same shape as the left-eye optotype; a right eye optotype having a second pattern and presented to the right eye through the lens and arranged side by side with the left eye optotype; and at least one of the left eye and right eye optotypes. By changing the distance between the first pattern and the second pattern in the direction connecting the left eye and the right eye using an electrical display means,
and means for changing the apparent distance of the pattern.
以下に本発明を図示の実施例に基づいて詳細に
説明する。 The present invention will be explained in detail below based on illustrated embodiments.
第１図は本発明に係る立体視検査装置の原理的
構成図を示すものであり、被検者Ｓの左眼Ｅ１と
右眼Ｅ２はそれぞれレンズ１ａ，１ｂを通して視
標２ａ，２ｂを見るようにしてある。 FIG. 1 shows a basic configuration diagram of the stereoscopic vision testing apparatus according to the present invention, in which the left eye E1 and right eye E2 of the subject S are configured to view optotypes 2a and 2b through lenses 1a and 1b, respectively. It is set as.
これらの左右の視標２ａ，２ｂはそれぞれ例え
ば第２図に示すように、少なくとも第１と第２の
２つのパターンＰ，Ｑを有し、Ｑは固定パター
ン、Ｐは移動パターンとなつている。ただし、左
右の視標２ａ，２ｂは同一のものを使用すること
もできる。これらの視標２ａ，２ｂを液晶で製作
するときは、移動パターンＰは隣接して平行に配
列された多数本の棒状の要素Ｐ１，Ｐ２，Ｐ３…
…で構成し、それらを順次に１本ずつ点灯するよ
うになつており、第２図では要素Ｐ５が点灯して
いる状態を示している。 These left and right optotypes 2a and 2b each have at least two patterns P and Q, a first and a second, as shown in FIG. 2, respectively, where Q is a fixed pattern and P is a moving pattern. . However, it is also possible to use the same optotypes 2a and 2b on the left and right sides. When these optotypes 2a and 2b are made of liquid crystal, the moving pattern P is composed of a large number of bar-shaped elements P1, P2, P3, etc. arranged adjacently and in parallel.
..., which are turned on one by one in sequence, and FIG. 2 shows a state in which element P5 is turned on.
第１図において、操作部４を被検者Ｓ又は検者
が操作することにより、制御部３を介して視標２
ａ，２ｂの点灯をコントロールできるようにして
ある。被検眼Ｅ１，Ｅ２から視標２ａ，２ｂまで
の距離は、実際は数10cm程度であるが、レンズ１
ａ，１ｂを通して見る場合の見かけの距離は数ｍ
程度の遠方視になり、両眼Ｅ１，Ｅ２の視線は略
平行に設定される。 In FIG. 1, when the subject S or the examiner operates the operation unit 4, the visual target 2 is controlled via the control unit 3.
The lighting of lights a and 2b can be controlled. The distance from the eyes E1, E2 to the optotypes 2a, 2b is actually about several tens of centimeters, but
The apparent distance when looking through a and 1b is several meters
This results in a certain distance vision, and the lines of sight of both eyes E1 and E2 are set to be approximately parallel.
見かけの距離は左眼Ｅ１と右眼Ｅ２の視差で感
ずるから、いま左右の視標２ａ，２ｂが同一のパ
ターンを使用するとし、左右の視標２ａ，２ｂの
要素が同じ要素であれば、輻輳角が同じであるか
ら移動パターンＰは固定パターンＱと同一面にあ
るように見える。ここで例えば、視標２ａは要素
Ｐ４、視標２ｂは要素Ｐ５を点灯した場合に、移
動パターンＰは輻輳角が開くから遠くに見える筈
である。逆に、視標２ａは要素Ｐ５、視標２ｂは
要素Ｐ４を点灯したとすれば、移動パターンＰは
近くに見えることになる。また、視標２ａが要素
Ｐ１、視標２ｂが要素Ｐ１０であるときは、移動
パターンＰは最も遠くに見えるし、逆に視標２ａ
が要素Ｐ１０、視標２ｂが要素Ｐ１であるときは
最も近くに見えることになる。このように液晶要
素を変えていくと見かけの距離が変化する。 The apparent distance is felt by the parallax between the left eye E1 and the right eye E2, so if the left and right optotypes 2a and 2b use the same pattern, and the elements of the left and right optotypes 2a and 2b are the same, then Since the convergence angles are the same, the moving pattern P appears to be on the same plane as the fixed pattern Q. Here, for example, when the element P4 of the optotype 2a and the element P5 of the optotype 2b are lit, the moving pattern P should appear far away because the convergence angle is wide. Conversely, if element P5 is lit for the optotype 2a and element P4 is lit for the optotype 2b, the movement pattern P will appear closer. Furthermore, when the optotype 2a is element P1 and the optotype 2b is element P10, the movement pattern P appears furthest away, and conversely, when the optotype 2a
When the element P10 is the element P10 and the visual target 2b is the element P1, it will appear to be the closest. By changing the liquid crystal elements in this way, the apparent distance changes.
従つて、テスト時に被験者が操作部４の操作ボ
タンを押して移動パターンＰの見かけ上の距離を
変え、固定パターンＱと同じ距離に移動させる。
被検者の眼Ｅ１，Ｅ２が正常ならば同じ要素が点
灯したときに両パターンＰ，Ｑは同じ距離に見え
る。 Therefore, during the test, the subject presses the operation button on the operation unit 4 to change the apparent distance of the movement pattern P and move it to the same distance as the fixed pattern Q.
If the subject's eyes E1 and E2 are normal, both patterns P and Q will appear to be at the same distance when the same element is lit.
なお、固定パターンＱと移動パターンＰを左右
眼にそれぞれ１つずつ用いる実施例を述べたが、
これら４つのパターンを全て移動パターンＰで構
成したり、移動パターンＰを３つ、固定パターン
Ｑを１つとすること、或いは移動パターンＰを１
つ、固定パターンＱを３つとすることも可能であ
る。 Although an example has been described in which one fixed pattern Q and one moving pattern P are used for each of the left and right eyes,
All of these four patterns may be composed of moving patterns P, three moving patterns P and one fixed pattern Q, or one moving pattern P.
However, it is also possible to have three fixed patterns Q.
視標２ａ，２ｂは液晶以外のものを使用できる
が、CRTを使用すればパターンを自由に選定で
きるという利点がある。しかし、この場合はパタ
ーンジエネレータが必要になる。また、左眼、右
眼のそれぞれの固定パターンＱは従来の三杆計と
同様に、移動パターンＰの両側に２個ずつ計４個
配置してもよい。 Although it is possible to use materials other than liquid crystal for the optotypes 2a and 2b, the use of CRT has the advantage that patterns can be freely selected. However, in this case a pattern generator is required. Further, the fixed patterns Q for the left eye and the right eye may be arranged in a total of four, two on each side of the moving pattern P, similarly to the conventional three-rod meter.
なお、近見時の立体視機能テストの場合には、
左右の視線に輻輳をつける必要があるが、光路中
にプリズムやミラー等を適当に配置すれば、輻輳
を充分につけることができる。 In addition, in the case of a stereoscopic vision function test for near vision,
It is necessary to create convergence between the left and right lines of sight, but by appropriately arranging prisms, mirrors, etc. in the optical path, sufficient convergence can be achieved.
以上説明したように本発明に係る立体視検査装
置は、従来の三杆計のような大きなスペースが不
要になり、しかも立体視機能の定量的な測定が可
能であるという効果がある。 As described above, the stereoscopic vision inspection device according to the present invention does not require a large space unlike the conventional three-rod meter, and has the advantage that it is possible to quantitatively measure the stereoscopic vision function.
図面は本発明に係る立体視検査装置の実施例を
示すものであり、第１図は原理的な構成図、第２
図は視標の正面図である。
符号１ａ，１ｂはレンズ、２ａ，２ｂは視標、
３は制御部、４は操作部、Ｅ１，Ｅ２は被検眼、
Ｐは移動パターン、Ｑは固定パターンである。
The drawings show an embodiment of the stereoscopic inspection apparatus according to the present invention, and FIG. 1 is a basic configuration diagram, and FIG.
The figure is a front view of the optotype. Symbols 1a and 1b are lenses, 2a and 2b are optotypes,
3 is a control unit, 4 is an operation unit, E1 and E2 are eyes to be examined,
P is a moving pattern and Q is a fixed pattern.
Claims (1)
た第１、第２のパターンを有し左眼にレンズを通
して呈示する左眼用視標と、該左眼用視標と同一
形状の第１、第２のパターンを有し右眼に前記レ
ンズを通して呈示すると共に前記左眼用視標と並
べて配置した右眼用視標と、これらの左眼用、右
眼用視標の少なくとも一方の視標の前記第１のパ
ターンと第２のパターンの左眼と右眼を結ぶ方向
の間隔を電気的表示手段を用いて変化させること
により、前記第１、第２のパターンの見かけ上の
距離を変化させる手段とを備えたことを特徴とす
る立体視検査装置。 ２ 前記視標を多要素から成る液晶で構成した特
許請求の範囲第１項に記載の立体視検査装置。 ３ 前記視標をCRTで構成した特許請求の範囲
第１項に記載の立体視検査装置。[Scope of Claims] 1. An optotype for the left eye, which has first and second patterns arranged at intervals in a direction connecting the left eye and the right eye, and is presented to the left eye through a lens; A right eye optotype having first and second patterns having the same shape as the optotype and presented to the right eye through the lens and arranged side by side with the left eye optotype, and these left eye and right eye optotypes. By changing the interval in the direction connecting the left eye and the right eye of the first pattern and the second pattern of at least one of the optotypes for use, using an electric display means, the first and second A stereoscopic vision inspection device characterized by comprising: means for changing the apparent distance of the pattern. 2. The stereoscopic vision inspection device according to claim 1, wherein the optotype is composed of a multi-element liquid crystal. 3. The stereoscopic vision inspection device according to claim 1, wherein the optotype is composed of a CRT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59028595A JPS60185533A (en) | 1984-02-20 | 1984-02-20 | Stereoscopic inspection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59028595A JPS60185533A (en) | 1984-02-20 | 1984-02-20 | Stereoscopic inspection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60185533A JPS60185533A (en) | 1985-09-21 |
| JPS6352892B2 true JPS6352892B2 (en) | 1988-10-20 |
Family
ID=12252941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59028595A Granted JPS60185533A (en) | 1984-02-20 | 1984-02-20 | Stereoscopic inspection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185533A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313282Y2 (en) * | 1986-08-27 | 1991-03-27 | ||
| JP3689489B2 (en) * | 1996-06-20 | 2005-08-31 | 株式会社トプコン | Sight table presentation device |
| JP5602515B2 (en) * | 2010-06-29 | 2014-10-08 | 株式会社ニデック | Target presentation device |
-
1984
- 1984-02-20 JP JP59028595A patent/JPS60185533A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60185533A (en) | 1985-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |