JPH0595904A - Optical apparatus - Google Patents
Optical apparatusInfo
- Publication number
- JPH0595904A JPH0595904A JP3262098A JP26209891A JPH0595904A JP H0595904 A JPH0595904 A JP H0595904A JP 3262098 A JP3262098 A JP 3262098A JP 26209891 A JP26209891 A JP 26209891A JP H0595904 A JPH0595904 A JP H0595904A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- refractive index
- focus
- refractivity
- focus lens
- 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
- Automatic Focus Adjustment (AREA)
- Eye Examination Apparatus (AREA)
Abstract
(57)【要約】
【目的】 屈折度情報を広い範囲で操作性良く検出する
光学装置に関する。
【構成】 屈折度補正レンズ４，５の光路内への挿入に
応じてフォーカスレンズ３の位置を変位させ、屈折度補
正レンズの光路内への挿入に伴う系全体の屈折度変化を
小さくする。
(57) [Abstract] [Purpose] The present invention relates to an optical device that detects refractive index information in a wide range with good operability. [Structure] The position of the focus lens 3 is displaced in accordance with the insertion of the refractive index correction lenses 4 and 5 into the optical path to reduce the change in the refractive index of the entire system due to the insertion of the refractive index correction lens into the optical path.
Description
【０００１】[0001]
【産業上の利用分野】本発明は眼底カメラを含むカメ
ラ、眼屈折計等において屈折度情報を広い範囲に渡って
検出できる光学装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device capable of detecting refractive index information over a wide range in a camera including a fundus camera, an eye refractometer and the like.
【０００２】[0002]
【従来の技術】従来、例えば眼底カメラのピント調整機
構は撮影光学系中にピント調整の為の可動レンズを配置
しこのレンズを光軸方向に移動することによりピントを
調整し、この可動レンズの可動範囲では補正しきれない
場合には光路に屈折度補正用のレンズ（視度補正レン
ズ）を挿入しさらに広い屈折度範囲に対応するように構
成されていた。2. Description of the Related Art Conventionally, for example, in a focus adjusting mechanism of a fundus camera, a movable lens for focus adjustment is arranged in a photographing optical system, and the focus is adjusted by moving the lens in the optical axis direction. In the case where correction is not possible within the movable range, a lens for correcting refraction (a diopter correction lens) is inserted in the optical path so as to correspond to a wider refraction range.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
例では屈折度補正用のレンズを光路内に挿入すると、眼
底カメラ側の系全体の屈折度が大きく変化してしまいピ
ントの合っている度合いを見失ってしまうため操作しづ
らいという欠点があった。However, in the above-mentioned conventional example, when a lens for correcting the refractive index is inserted into the optical path, the refractive index of the entire system on the fundus camera side is largely changed, and the degree of focus is lost. However, it has a drawback that it is difficult to operate.
【０００４】[0004]
【課題を解決するための手段】本発明の目的は上記従来
例の欠点を解消した光学装置を提供することにあり、そ
の要旨は連続的に屈折度を変化させる第１の屈折度調整
手段と、非連続的に屈折度を変化させる第２の屈折度調
整手段と、該第２の屈折度調整手段の状態変化を検知す
る検知手段と、該検知手段で検知した前記第２の屈折度
調整手段の状態変化に応じて系全体の屈折度変化が前記
第２の屈折度調整手段自身の屈折度変化より小さくなる
ように前記第１の屈折度調整手段を変化させる制御手段
を有することを特徴とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical device which solves the above-mentioned drawbacks of the prior art, and its gist is to provide a first refractive index adjusting means for continuously changing the refractive index. Second refractivity adjusting means for changing the refractivity non-continuously, detecting means for detecting a state change of the second refractivity adjusting means, and the second refractivity adjusting means detected by the detecting means. A control means for changing the first refraction index adjusting means so that a change in the refractivity of the entire system becomes smaller than a change in the refractivity of the second refraction adjusting means itself in response to a change in the state of the means. And
【０００５】[0005]
【作用】屈折度補正レンズ４，５を光路内に挿入するの
に応じてフォーカスレンズ３を光軸方向に変位させ、屈
折度補正レンズ４，５の挿入の前後で系全体の屈折力変
化を屈折度補正レンズの屈折度より小さくする、好まし
くは連続的に変化させる。The focus lens 3 is displaced in the optical axis direction in response to the insertion of the refractive index correction lenses 4 and 5 to change the refractive power of the entire system before and after the insertion of the refractive index correction lenses 4 and 5. The refractive index is made smaller than the refractive index of the lens, and is preferably continuously changed.
【０００６】[0006]
【実施例】図１は本発明の第１実施例を示す図面であ
り、同図において１は穴明きミラー、２は対物レンズ、
３は連続的に屈折度を変化させるフォーカスレンズ、
４，５は各々非連続的に屈折度を変化させる負，正の屈
折度補正レンズ、６は撮影レンズ、７は跳ね上げミラ
ー、８はミラー、９はピント板、１０はファインダー用
の接眼レンズ、１１は屈折度補正レンズの挿入又は離脱
状態を検知する手段、１２はフォーカスレンズ３を所定
位置へ移動する駆動制御手段、１３はフォーカスレンズ
を合焦駆動するスイッチ、１４はフィルム室、Ｅは被検
眼、Ｅpは被検眼瞳、Ｅfは被検眼眼底である。1 is a drawing showing a first embodiment of the present invention, in which 1 is a perforated mirror, 2 is an objective lens,
3 is a focus lens that continuously changes the refractive index,
Reference numerals 4 and 5 are negative and positive refractivity correction lenses that change the refractivity discontinuously, 6 is a taking lens, 7 is a flip-up mirror, 8 is a mirror, 9 is a focusing plate, and 10 is an eyepiece for a viewfinder. , 11 is a means for detecting the insertion or removal state of the refraction correction lens, 12 is a drive control means for moving the focus lens 3 to a predetermined position, 13 is a switch for focusing the focus lens, 14 is a film chamber, E is E The eye E, E p is the pupil of the eye, and E f is the fundus of the eye.
【０００７】さて不図示の照明手段を発した光束は照明
系光軸０１に沿って進み穴明きミラー１の周辺のミラー
部により反射され、対物レンズ２を通り被検眼瞳Ｅpよ
り被検眼眼底Ｅfを照明する。このように照明された眼
底からの光は瞳Ｅpより対物レンズ２、穴明きミラー１
の穴の中、フォーカスレンズ３、撮影レンズ６を通り、
跳ね上げミラー７及びミラー８により反射され、ピント
ガラス９の前または後に結像する。撮影者はファインダ
ー用の接眼レンズ１０を通してこの像を観察し、この像
の結像位置がピントガラス９の位置と一致するようにフ
ォーカスレンズ３の駆動スイッチ１３を操作しフォーカ
スレンズ３を位置調整する。A light beam emitted from an illumination means (not shown) travels along the optical axis 01 of the illumination system and is reflected by a mirror portion around the perforated mirror 1, passes through the objective lens 2 and the eye E p to be inspected. Illuminate the fundus E f . The light from the fundus thus illuminated illuminates the objective lens 2 and the perforated mirror 1 from the pupil E p.
Through the focus lens 3 and shooting lens 6 in the hole
It is reflected by the flip-up mirror 7 and the mirror 8 and forms an image in front of or behind the focus glass 9. The photographer observes this image through the eyepiece lens 10 for the viewfinder, and operates the drive switch 13 of the focus lens 3 to adjust the position of the focus lens 3 so that the image formation position matches the position of the focus glass 9. .
【０００８】しかし、例えば被検眼が強度近視眼である
場合、または無水晶体眼等の強度の遠視である場合に
は、フォーカスレンズ３の移動範囲ではピントを合わせ
られないこともある。そのような場合には負の屈折度補
正レンズ４または正の屈折度補正レンズ５を光路内に挿
入し、上述した如くフォーカスレンズ３を調整してピン
ト合わせを行う。However, for example, when the eye to be inspected is intense myopia or hyperopia of aphakic eye or the like, it may not be possible to focus in the moving range of the focus lens 3. In such a case, the negative refractive index correction lens 4 or the positive refractive index correction lens 5 is inserted into the optical path, and the focus lens 3 is adjusted as described above for focusing.
【０００９】図２にフォーカスレンズ３の位置と、系全
体の屈折度Ｄ（ディオプタ）の関係について示す。横軸
はフォーカスレンズ３の位置をあらわし、位置Ｐ-から
位置Ｐ+までがその移動範囲である。また位置Ｐｏはフ
ォーカスレンズの基準位置でありフォーカスレンズ３が
位置Ｐｏにあるときには系全体の屈折度は０ディオプタ
であり、被検眼が正視である場合に、その眼底にピント
があう。又、図２の１００ｂとして示すようにフォーカ
スレンズの位置がＰ-にあるときには系全体の屈折度は
−１５ディオプタ、Ｐ+にあるときは＋１５ディオプタ
である。また負の屈折度補正レンズ４を入れた場合のフ
ォーカスレンズ３の位置と系全体の屈折度の関係を図２
の１００ｃに示す。即ちフォーカスレンズ３がＰ-の位
置にある場合系全体の屈折度は−４０ディオプタであ
り、Ｐ+の場合には−１０ディオプタである。また、正
の屈折度補正レンズ５を入れた場合には、図２の１００
ａに示すようにフォーカスレンズ３がＰ-の位置にある
場合には、系全体の屈折度は＋１０ディオプタであり、
Ｐ+の位置にある場合には＋４０ディオプタである。FIG. 2 shows the relationship between the position of the focus lens 3 and the refractive index D (diopter) of the entire system. The horizontal axis represents the position of the focus lens 3, and its moving range is from position P − to position P + . Further, the position Po is the reference position of the focus lens, and when the focus lens 3 is at the position Po, the refractive index of the entire system is 0 diopter, and when the eye to be inspected is emmetropic, the fundus of the eye is in focus. Further, as shown as 100b in FIG. 2, when the position of the focus lens is at P − , the refractivity of the entire system is −15 diopters, and when it is at P + , it is +15 diopters. FIG. 2 shows the relationship between the position of the focus lens 3 and the refractive index of the entire system when the negative refractive index correction lens 4 is inserted.
100c. That focus lens 3 is P - refraction of the whole case based on the position of a -40 diopter, a -10 diopter in the case of P +. Further, when the positive refraction correction lens 5 is inserted, 100
When the focus lens 3 is at the P − position as shown in a, the refractivity of the entire system is +10 diopters,
It is +40 diopters in the P + position.
【００１０】本実施例においては、フォーカスレンズ３
がＰ-の位置即ち−１５ディオプタの位置でピントが合
わせられない場合、負の屈折度補正レンズ４を挿入する
が、検知手段１１により負の屈折度補正レンズ４を挿入
されたことが検知されると、レンズ駆動制御手段１２は
フォーカスレンズ３をＰａの位置即ち系全体の屈折度が
−１５ディオプタになる位置に移動させる。またフォー
カスレンズ３がＰ+の位置即ち＋１５ディオプタの位置
でピントが合わせられない場合、正の屈折度補正レンズ
５を挿入するが、検知手段１１により正の屈折度補正レ
ンズ５を挿入されたことが検知されると、レンズ駆動制
御手段１２はフォーカスレンズ３をＰｂの位置つまり系
全体の屈折度が＋１５ディオプタになる位置に移動させ
る。In this embodiment, the focus lens 3
If the focus cannot be adjusted at the position of P − , that is, at the position of −15 diopters, the negative refractive index correction lens 4 is inserted, but the detection unit 11 detects that the negative refractive index correction lens 4 is inserted. Then, the lens drive control means 12 moves the focus lens 3 to the position of Pa, that is, the position where the refractivity of the entire system becomes -15 diopters. Further, when the focus lens 3 cannot be focused at the position of P + , that is, the position of +15 diopter, the positive refractive index correction lens 5 is inserted, but the positive refractive index correction lens 5 is inserted by the detection means 11. When is detected, the lens drive control means 12 moves the focus lens 3 to the position of Pb, that is, the position where the refractivity of the entire system becomes +15 diopters.
【００１１】又、屈折度補正レンズの挿入前のフォーカ
スレンズの位置を検知する手段と、その検知した位置に
対応して屈折度補正レンズ挿入後に移動すべきフォーカ
スレンズの位置を算出する手段を備えることにより、図
２に示すようにフォーカスレンズ３が屈折度補正レンズ
挿入に応じてＰｃ位置からＰｄ位置へ、Ｐｆ位置からＰ
ｅ位置へ移動されるようにしても良い。Further, there are provided means for detecting the position of the focus lens before the insertion of the refraction correction lens, and means for calculating the position of the focus lens to be moved after the insertion of the refraction correction lens corresponding to the detected position. As a result, as shown in FIG. 2, the focus lens 3 moves from the Pc position to the Pd position and from the Pf position to the P position according to the insertion of the refractive index correction lens.
It may be moved to the e position.
【００１２】又屈折度補正レンズの挿入に伴い、上述し
た実施例ではフォーカスレンズを適正位置へ移動するこ
とを述べたが、単に屈折度補正レンズの挿入に伴い、屈
折度補正レンズの正負に応じてフォーカスレンズを合焦
方向へ予め定まった量若しくは予め定まった位置へ変位
させるようにしても良い。In the above-described embodiment, the focus lens is moved to the proper position with the insertion of the refractivity correction lens. However, simply according to the insertion of the refractivity correction lens, the positive / negative of the refractivity correction lens may be changed. Alternatively, the focus lens may be displaced in the focusing direction by a predetermined amount or a predetermined position.
【００１３】さて、図１に戻って例えば、被検眼の視度
が−２０ディオプタの場合検者はスイッチ１３のマイナ
スの部分を操作し、フォーカスレンズ３を位置Ｐ-まで
移動する。そして眼底像のコントラストは明瞭になって
きているものの、さらにマイナス側にピント位置がある
と判断した場合には、負の屈折度補正レンズ４を光路内
に挿入する。すると前述の通りフォーカスレンズ３は自
動的に位置Ｐａに移動する。従って検者はさらにスイッ
チ１３のマイナスの部分を操作し、最良のピント位置を
得ることができる。[0013] Now, for example, back to FIG. 1, the examiner when the diopter of the subject's eye is -20 diopter operates the negative portion of the switch 13, the focus lens 3 position P - moves to. Although the contrast of the fundus image is becoming clear, the negative refraction correction lens 4 is inserted into the optical path when it is determined that the focus position is further on the negative side. Then, as described above, the focus lens 3 automatically moves to the position Pa. Therefore, the examiner can further operate the minus portion of the switch 13 to obtain the best focus position.
【００１４】このようにしてピント合わせを終了した
ら、検者は不図示の撮影スイッチを操作する。それによ
り、跳ね上げミラー７は光路外に退避し、眼底像はフィ
ルム１４に記録され撮影は終了する。After the focusing is completed in this way, the examiner operates a photographing switch (not shown). As a result, the flip-up mirror 7 is retracted out of the optical path, the fundus image is recorded on the film 14, and the photographing is completed.
【００１５】なお前記実施例においては、正負の屈折度
補正レンズの光路内への挿入にともない、フォーカスレ
ンズ３を正負に対応してそれぞれ異なる位置Ｐａ，Ｐｂ
に変位したが、異なる位置Ｐａ，Ｐｂではなく図２の１
００ｄ，１００ｅに示すように正負に拘らず共通の位置
Ｐｏへ変位させても良い。つまり正負の補正レンズの
内、一方の屈折度補正レンズを光路内に挿入した後でな
ければ他方の屈折度補正レンズを光路内に挿入できない
場合には、ＰａとＰｂが異なる位置ならばフォーカスレ
ンズ３もＰｂへ移動するために必ずＰａに立ち寄らねば
ならず、動きが複雑になり制御が煩雑になるからであ
る。In the above embodiment, the focus lens 3 is moved to different positions Pa and Pb depending on whether the positive or negative refractive index correction lens is inserted in the optical path.
, But not at different positions Pa and Pb, but at 1 in FIG.
It may be displaced to the common position Po regardless of whether it is positive or negative as indicated by 00d and 100e. In other words, if one of the positive and negative correction lenses is inserted into the optical path only after the other refractive index correction lens is inserted into the optical path, if the Pa and Pb are different, the focus lens This is also because 3 must move to Pa in order to move to Pb, which complicates the movement and complicates the control.
【００１６】なお屈折度補正レンズの光路内挿入を、フ
ォーカスレンズ３の移動に連動して自動的に行なっても
よい。即ちフォーカスレンズ３が移動範囲の端に達した
ことを検知する手段を設け、端に達した正負のディオプ
タ方向に従い、正または負の屈折度補正レンズを自動的
に挿入する手段を設けることにより、検者はフォーカス
スイッチを操作するだけで、連続的に広い屈折度範囲を
網羅することができる。The insertion of the refractive index correction lens in the optical path may be automatically performed in conjunction with the movement of the focus lens 3. That is, by providing means for detecting that the focus lens 3 has reached the end of the moving range, and by automatically providing a means for automatically inserting a positive or negative refractive index correction lens in accordance with the positive or negative diopter direction reaching the end, The examiner can continuously cover a wide range of refractive index simply by operating the focus switch.
【００１７】次に図３に自動ピント調整手段を有する眼
底カメラに応用した第２の実施例を示す。Next, FIG. 3 shows a second embodiment applied to a fundus camera having an automatic focus adjusting means.
【００１８】１５は眼底像を撮像するフィルム面相当位
置に配置された撮像手段であり、１６は撮像手段から出
力された撮像信号のコントラストよりピントのずれを検
知しその検知した信号に対応する信号を出力する制御手
段、１７は撮像手段１５の撮像した眼底像を映し出すモ
ニタである。Reference numeral 15 is an image pickup means arranged at a position corresponding to a film surface for picking up a fundus image, and 16 is a signal corresponding to the detected signal by detecting a focus shift from the contrast of the image pickup signal outputted from the image pickup means. Is a monitor for displaying the fundus image captured by the image capturing unit 15.
【００１９】本実施例では制御手段１６の出力した信号
に従いフォーカスレンズ駆動手段１２はフォーカスレン
ズ３を駆動し、撮像手段１５上の眼底像のコントラスト
が最大になるようにピント調整を行う。In this embodiment, the focus lens driving means 12 drives the focus lens 3 in accordance with the signal output from the control means 16 and adjusts the focus so that the contrast of the fundus image on the image pickup means 15 is maximized.
【００２０】ここでフォーカスレンズ３の移動範囲内で
ピント調整しきれない場合には、負の屈折度補正レンズ
４または正の屈折度補正レンズ５を光路内に挿入する。
すると検知手段１１はその旨検知し、その情報を受けて
レンズ駆動手段１２がフォーカスレンズ３を所定位置ま
で図２に示した如く変位させる。そして制御手段１６か
らの信号を受けてレンズ駆動手段１２はさらにフォーカ
スレンズ３を位置調整しピント調整動作を終了する。If the focus cannot be adjusted within the moving range of the focus lens 3, the negative refractive index correction lens 4 or the positive refractive index correction lens 5 is inserted in the optical path.
Then, the detection means 11 detects that fact, and upon receipt of the information, the lens drive means 12 displaces the focus lens 3 to a predetermined position as shown in FIG. Then, in response to the signal from the control means 16, the lens drive means 12 further adjusts the position of the focus lens 3 and ends the focus adjustment operation.
【００２１】本実施例においては屈折度補正レンズ４，
５を検者が手動にて光路内に挿入したが、屈折度補正レ
ンズを自動的に光路内に挿入する手段を設け、視度補正
レンズ挿入前の光学系の屈折力と、挿入される視度補正
レンズの屈折力を基に系全体の屈折力変化が大きくなら
ないように（好ましくは系全体の屈折力変化が連続す
る）自動ピント調整を行ってもよい。In this embodiment, the refractive index correction lens 4,
5 was manually inserted into the optical path by the examiner, but a means for automatically inserting the refraction correction lens into the optical path was provided, and the refractive power of the optical system before insertion of the diopter correction lens and Automatic focus adjustment may be performed on the basis of the refractive power of the degree correction lens so that the refractive power change of the entire system does not become large (preferably the refractive power change of the entire system is continuous).
【００２２】また、本実施例においては、眼底像のコン
トラストよりピント検出を行ったが、被検眼眼底にピン
ト調整用のスプリット指標を投影し、その指標のスプリ
ット量を検知して自動ピント調整を行う装置にも応用で
きることは言うまでもない。なお以上、屈折度補正レン
ズの光路内への挿入に応じてフォーカスレンズの調整を
行なうことを述べたが、屈折度補正レンズの光路外への
離脱に応じてフォーカスレンズが全く逆に調整可能であ
ることは言うまでもない。Further, in this embodiment, focus detection is performed from the contrast of the fundus image, but a split index for focus adjustment is projected on the fundus of the eye to be examined, and the split amount of the index is detected to perform automatic focus adjustment. It goes without saying that it can also be applied to a device for performing. Although it has been described that the focus lens is adjusted according to the insertion of the refractive index correction lens into the optical path, the focus lens can be adjusted in the opposite way according to the removal of the refractive index correction lens from the optical path. Needless to say.
【００２３】又、屈折度の連続的な調整はフォーカスレ
ンズの位置の調整に限られず、位置を変えずにレンズ面
曲率を変えても良い。The continuous adjustment of the refractive index is not limited to the adjustment of the position of the focus lens, and the lens surface curvature may be changed without changing the position.
【００２４】なお本発明は自動又は手動ピント調整を行
なう眼底カメラばかりか一般のカメラに適用できる。又
眼科装置の中でも眼底カメラに限らず、被検眼眼底に投
影される指標像のピント状態より被検眼の眼屈折力を自
動的又は手動的に測定する眼屈折計にも適用できる。The present invention can be applied not only to a fundus camera for performing automatic or manual focus adjustment but also to a general camera. Further, the ophthalmologic apparatus is not limited to the fundus camera, and can be applied to an eye refractometer that automatically or manually measures the eye refractive power of the eye to be inspected from the focus state of the index image projected on the eye fundus of the eye to be inspected.
【００２５】[0025]
【発明の効果】以上、本発明によれば広い範囲で屈折度
情報が操作性良く検出できる。As described above, according to the present invention, the refractive index information can be detected in a wide range with good operability.
【図１】本発明の第１実施例の図である。FIG. 1 is a diagram of a first embodiment of the present invention.
【図２】フォーカスレンズの位置と全系屈折度の関係を
示す図である。FIG. 2 is a diagram showing the relationship between the position of a focus lens and the refractive index of the entire system.
【図３】本発明の第２実施例の図である。FIG. 3 is a diagram of a second embodiment of the present invention.
３ フォーカスレンズ ４ 負の屈折度補正レンズ ５ 正の屈折度補正レンズ １０ 接眼レンズ １１ 屈折度補正レンズ検知手段 １２ レンズ駆動手段 １３ フォーカスレンズ駆動スイッチ １４ フィルム面 １５ 撮像手段 １６ 制御手段 １７ モニタ 3 Focus Lens 4 Negative Refractive Index Correcting Lens 5 Positive Refractive Index Correcting Lens 10 Eyepiece 11 Refractive Index Correcting Lens Detecting Device 12 Lens Driving Device 13 Focus Lens Driving Switch 14 Film Surface 15 Imaging Device 16 Controlling Device 17 Monitor
Claims (2)
度調整手段と、 非連続的に屈折度を変化させる第２の屈折度調整手段
と、 該第２の屈折度調整手段の状態変化を検知する検知手段
と、 該検知手段で検知した前記第２の屈折度調整手段の状態
変化に応じて系全体の屈折度変化が前記第２の屈折度調
整手段自身の屈折度変化より小さくなるように前記第１
の屈折度調整手段を変化させる制御手段を有することを
特徴とする光学装置。1. A first refractivity adjusting means for continuously changing the refractivity, a second refractivity adjusting means for discontinuously changing the refractivity, and a state of the second refractivity adjusting means. The detecting means for detecting the change, and the change in the refractive index of the entire system is smaller than the change in the refractive index of the second refraction adjusting means itself in response to the change in the state of the second refraction adjusting means detected by the detecting means. To be the first
An optical device having control means for changing the refraction adjusting means of the above.
段の状態変化の前後で系全体の屈折度が略連続的に変化
するように前記第１の屈折度調整手段を変化させる請求
項１記載の光学装置。2. The control means changes the first refraction index adjusting means so that the refractivity of the entire system changes substantially continuously before and after the state change of the second refraction index adjusting means. 1. The optical device according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3262098A JPH0595904A (en) | 1991-10-09 | 1991-10-09 | Optical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3262098A JPH0595904A (en) | 1991-10-09 | 1991-10-09 | Optical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0595904A true JPH0595904A (en) | 1993-04-20 |
Family
ID=17371012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3262098A Pending JPH0595904A (en) | 1991-10-09 | 1991-10-09 | Optical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0595904A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007037897A (en) * | 2005-08-05 | 2007-02-15 | Topcon Corp | Fundus camera |
| JP2008259544A (en) * | 2007-04-10 | 2008-10-30 | Topcon Corp | Slit lamp |
| JP2010193987A (en) * | 2009-02-24 | 2010-09-09 | Nidek Co Ltd | Fundus camera |
| JP2011245137A (en) * | 2010-05-28 | 2011-12-08 | Canon Inc | Ophthalmologic apparatus, control method for the same, and program |
| JP2012050592A (en) * | 2010-08-31 | 2012-03-15 | Canon Inc | Fundus imaging apparatus |
| JP2014209983A (en) * | 2013-04-17 | 2014-11-13 | キヤノン株式会社 | Ophthalmologic image-capturing apparatus, control method for the same, and program |
-
1991
- 1991-10-09 JP JP3262098A patent/JPH0595904A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007037897A (en) * | 2005-08-05 | 2007-02-15 | Topcon Corp | Fundus camera |
| JP2008259544A (en) * | 2007-04-10 | 2008-10-30 | Topcon Corp | Slit lamp |
| JP2010193987A (en) * | 2009-02-24 | 2010-09-09 | Nidek Co Ltd | Fundus camera |
| JP2011245137A (en) * | 2010-05-28 | 2011-12-08 | Canon Inc | Ophthalmologic apparatus, control method for the same, and program |
| US9215976B2 (en) | 2010-05-28 | 2015-12-22 | Canon Kabushiki Kaisha | Ophthalmologic apparatus, program, and storage medium of program |
| JP2012050592A (en) * | 2010-08-31 | 2012-03-15 | Canon Inc | Fundus imaging apparatus |
| JP2014209983A (en) * | 2013-04-17 | 2014-11-13 | キヤノン株式会社 | Ophthalmologic image-capturing apparatus, control method for the same, and program |
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| A02 | Decision of refusal |
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