JPH0241329B2 - - Google Patents
Info
- Publication number
- JPH0241329B2 JPH0241329B2 JP57161576A JP16157682A JPH0241329B2 JP H0241329 B2 JPH0241329 B2 JP H0241329B2 JP 57161576 A JP57161576 A JP 57161576A JP 16157682 A JP16157682 A JP 16157682A JP H0241329 B2 JPH0241329 B2 JP H0241329B2
- Authority
- JP
- Japan
- Prior art keywords
- slit
- fundus
- diaphragm
- observation
- aperture
- 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 - Lifetime
Links
- 238000005286 illumination Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 7
- 210000000695 crystalline len Anatomy 0.000 description 28
- 230000004907 flux Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 210000001525 retina Anatomy 0.000 description 4
- 210000004087 cornea Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010979 ruby Substances 0.000 description 2
- 229910001750 ruby Inorganic materials 0.000 description 2
- 238000003325 tomography Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
Description
【発明の詳細な説明】
この発明は、被検眼の眼底のスリツト像観察・
撮影を行なう眼底カメラに関するものである。[Detailed Description of the Invention] This invention provides slit image observation of the fundus of the eye to be examined.
This relates to a fundus camera that takes pictures.
従来、単に眼底の観察・撮影を行なうための眼
底カメラは存在するが、眼底のスリツト像観察・
撮影を行なうことができる眼底カメラは存在しな
い。しかしながら、眼底のスリツト像の観察・撮
影は網膜近傍の断層を精密に検査するために是非
とも必要である。眼底のスリツト像の観察のみに
限れば、従来からスリツトランプに被検眼に装着
したコンタクトレンズ又はルビーレンズを使用す
ることによつて可能ではあるが、斯る方法による
ときにはコンタクトレンズやルビーレンズの表面
で眼底を照明するための照明光が反射するため、
この反射光によつて眼底の観察が極めて困難とな
り観察にはかなりの熟練を要する。しかも、斯る
従来のスリツト像観察方法では観察野が狭いので
患部を発見するために多くの時間を要すると共
に、被検眼にコンタクトレンズ等を装着しなけれ
ばならないから被検者に大きな負担をかけること
になる。したがつて。被検眼の角膜等での反射光
を除去し得ると共に、広い観察野を有し、更に被
検者にコンタクトレンズ等を装着させる必要のな
い、眼底のスリツト像観察・撮影装置の開発が望
まれている。 Conventionally, fundus cameras exist for simply observing and photographing the fundus;
There is no fundus camera that can take pictures. However, observing and photographing a slit image of the fundus is absolutely necessary in order to precisely examine the tomography near the retina. If only the observation of the slit image of the fundus is conventionally possible, it is possible by using a contact lens or ruby lens attached to the eye to be examined using a slit lamp, but when using this method, the surface of the contact lens or ruby lens Because the illumination light used to illuminate the fundus of the eye is reflected,
This reflected light makes observation of the fundus of the eye extremely difficult and requires considerable skill. Moreover, in the conventional slit image observation method, the observation field is narrow, so it takes a lot of time to find the affected area, and it also places a heavy burden on the patient because contact lenses, etc. must be attached to the patient's eye. It turns out. Therefore. It is desired to develop a fundus slit image observation/photography device that can eliminate light reflected by the cornea of the eye being examined, has a wide observation field, and does not require the patient to wear contact lenses, etc. ing.
この発明の目的は、何らの熟練を必要とせず、
また、被検者にコンタクトレンズ装着等の負担を
かけることもなく眼底のスリツト像観察・撮影を
可能にし、かつ、広い観察野で網膜近傍の断層を
精密に検査することができる眼底カメラを提供す
ることにある。 The purpose of this invention is to eliminate the need for any skill;
In addition, we provide a fundus camera that enables observation and photography of slit images of the fundus without placing a burden on the subject, such as wearing contact lenses, and allows for precise examination of cross-sections near the retina in a wide observation field. It's about doing.
この発明の眼底カメラは、被検眼の眼底をリン
グ状開口絞りを介して照明する照明系と、このよ
うにして照明された眼底を観察・撮影する観察・
撮影系とを有し、更に照明系中の眼底との共役位
置にスリツト幅を可変としたスリツト絞りを配設
して、前記スリツト絞りにより照明された眼底の
スリツト像を観察・撮影可能にしている。すなわ
ち、照明系は観察用光源の発した光を被検眼前眼
部と共役な位置に配置したリング状開口絞りを介
して眼底を照明する。そして、このようにして照
明された眼底は被検眼前眼部に形成されたリング
状開口絞り像の中心部を通る光束によつて観察・
撮影系の合焦レンズに至り、次いで結像レンズに
よつてフイルム等に結像する。このとき、眼底の
像は眼底照明用の光束の中心を通る光束によつて
観察・撮影系に至るから、眼底観察・撮影用光束
と照明光束とは干渉しない。そして、眼底のスリ
ツト像観察・撮影をするためのスリツト絞りは照
明系中の眼底との共役位置に配されているから、
観察・撮影系によつて眼底のスリツト像の観察及
び撮影が可能となるのである。 The fundus camera of the present invention includes an illumination system that illuminates the fundus of the eye to be examined through a ring-shaped aperture diaphragm, and an observation system that observes and photographs the thus illuminated fundus.
A slit diaphragm having a variable slit width is disposed at a position conjugate with the fundus in the illumination system, so that a slit image of the fundus illuminated by the slit diaphragm can be observed and photographed. There is. That is, the illumination system illuminates the fundus with light emitted from the observation light source through a ring-shaped aperture diaphragm arranged at a position conjugate with the anterior segment of the subject's eye. The thus illuminated fundus is then observed and observed by the light beam passing through the center of the ring-shaped aperture image formed in the anterior segment of the subject's eye.
The light reaches the focusing lens of the photographing system, and then is imaged onto a film or the like by the imaging lens. At this time, since the image of the fundus reaches the observation/photographing system by a light beam passing through the center of the light beam for fundus illumination, the light beam for fundus observation/photography does not interfere with the illumination light beam. The slit aperture for observing and photographing the slit image of the fundus is placed in the illumination system at a conjugate position with the fundus.
The observation/photography system makes it possible to observe and photograph the slit image of the fundus.
以下、この発明の眼底カメラの実施例を図に基
づいて説明する。 Embodiments of the fundus camera of the present invention will be described below with reference to the drawings.
先づ、照明系は第１図示のように凹面鏡１、観
察用光源２、コンデンサ３、撮影用光源４、コン
デンサ５、反射鏡６、リング状開口絞り７、リレ
ーレンズ８、スリツト絞り９、開口絞り１０、リ
レーレンズ１１、そして、中央に開口１２ａを有
する反射鏡１２によつて構成されている。ここ
で、観察用光源２はコンデンサ３によつて撮影用
光束４に共役に配置され、またリング状開口絞り
７は第４図示のようにリング状開口７ａを有す
る。このリング状開口絞り７は被検眼前眼部と共
役な位置に配置されている。リング状開口絞り７
の代わりに扇形状開口７′ａを有する扇形状開口
絞り７′を用いることも可能であり（第５図ない
し第６図参照）、両者を相互に交換して使用でき
るようにすることが望ましい。この開口の形状は
扇形でなくともよく、リング状開口絞りの開口に
略含まれる形状であればよい。もつとも、扇形状
開口絞り７′を用いる場合には後述するスリツト
絞り９の回転に連動して扇形状開口絞り７′も回
転するように構成し、これによつて扇形状開口
７′ａの方向をスリツト絞り９のスリツトの方向
と一致させなければならない。次に、スリツト絞
り９は第２図示のようにスリツト幅Ｈを可変と
し、更に光軸R1を中心にして回転可能である。
そして、このスリツト絞り９はリレーレンズ８，
１１の間でかつ被検眼Ｅの眼底E1との共役位置
に配される。スリツト絞り９は２枚の遮弊板９
ａ，９ｂを相対的に変位させることによりスリツ
ト幅Ｈの大きさを可変としているが、互いに異な
るスリツト幅を有する複数のスリツト絞りをもつ
て構成することもできる。スリツト絞り９には開
口絞り１０が並設され、開口絞り１０は第３図示
のように開口面積１０ａの大きさが可変となつて
いる。この開口絞り１０によりスリツト絞り９の
長手方向の長さを変えることができる。なお、眼
底を広く観察・撮影する場合にはこの開口絞り１
０を開くものである。 First, the illumination system, as shown in the first diagram, includes a concave mirror 1, an observation light source 2, a condenser 3, a photographic light source 4, a condenser 5, a reflecting mirror 6, a ring-shaped aperture diaphragm 7, a relay lens 8, a slit diaphragm 9, and an aperture. It is composed of an aperture 10, a relay lens 11, and a reflecting mirror 12 having an aperture 12a in the center. Here, the observation light source 2 is placed conjugate to the photographing light beam 4 by the condenser 3, and the ring-shaped aperture diaphragm 7 has a ring-shaped aperture 7a as shown in the fourth figure. This ring-shaped aperture stop 7 is arranged at a position conjugate with the anterior segment of the subject's eye. Ring-shaped aperture 7
It is also possible to use a fan-shaped aperture diaphragm 7' having a fan-shaped aperture 7'a instead of (see Figures 5 and 6), and it is desirable to be able to use both interchangeably. . The shape of this aperture does not need to be fan-shaped, and may be any shape that is substantially included in the aperture of the ring-shaped aperture stop. However, when the sector-shaped aperture 7' is used, the sector-shaped aperture 7' is also configured to rotate in conjunction with the rotation of the slit diaphragm 9, which will be described later, so that the direction of the sector-shaped aperture 7'a is must match the direction of the slit of the slit aperture 9. Next, the slit diaphragm 9 has a variable slit width H as shown in the second diagram, and is further rotatable about the optical axis R1 .
This slit diaphragm 9 is connected to the relay lens 8,
11 and at a conjugate position with the fundus E 1 of the eye E to be examined. The slit aperture 9 has two shielding plates 9
Although the size of the slit width H is made variable by relatively displacing a and 9b, it is also possible to have a plurality of slit apertures having different slit widths. An aperture stop 10 is arranged in parallel with the slit stop 9, and the aperture stop 10 has a variable opening area 10a as shown in the third figure. This aperture diaphragm 10 allows the length of the slit diaphragm 9 in the longitudinal direction to be changed. In addition, when observing and photographing the fundus widely, use this aperture stop 1.
It opens 0.
次に、観察・撮影系は光軸R2に沿つて配され
た対物レンズ１３、撮影絞り１４、合焦レンズ１
５、結像レンズ１６、跳ね上げ可能なミラー１
７、フイールドレンズ１８、プリズム１９、接眼
レンズ２０によつて構成されている。２１はフイ
ルムを示す。ここで、合焦レンズ１５は光軸R2
に沿つてＡ−A′方向に移動自在であり、合焦レ
ンズ１５がＡ−A′方向に移動して合焦するに際
してスリツト絞り９と開口絞り１０とが合焦レン
ズ１５に連動するようになつている。これによつ
て、被検眼Ｅの眼底E1に観察・撮影系のピント
が合つているときにはスリツト絞り９も眼底E1
に結像することになる。 Next, the observation/photography system includes an objective lens 13, a photographic aperture 14, and a focusing lens 1 arranged along the optical axis R2 .
5. Imaging lens 16, flip-up mirror 1
7. Consists of a field lens 18, a prism 19, and an eyepiece 20. 21 indicates a film. Here, the focusing lens 15 has an optical axis R 2
The slit diaphragm 9 and the aperture diaphragm 10 are moved in conjunction with the focusing lens 15 when the focusing lens 15 moves in the A-A' direction to focus. It's summery. As a result, when the observation/photographing system is focused on the fundus E 1 of the eye E to be examined, the slit diaphragm 9 also focuses on the fundus E 1 .
The image will be formed.
以下、作用を説明する。 The action will be explained below.
通常の眼底撮影はスリツト絞り９と開口絞り１
０を大きく開くことによつて行なわれる。すなわ
ち、観察用光源２の発した光はコンデンサ３によ
つて撮影用光源４の位置に一旦結像し、コンデン
サ５、反射鏡６を経てリング状開口絞り７に達す
る。そして、リング状開口絞り７のリング状開口
７ａによつて環状の照明光束となつた光はリレー
レンズ８，１１を通過して反射鏡１２に至り、こ
こで被検眼Ｅ方向へ反射させられる。こうして被
検眼Ｅ方向へ向つた照明光束は対物レンズ１３、
被検眼Ｅの角膜E2、水晶体E3を経て眼底E1を照
射することになる。 For normal fundus photography, the slit aperture is 9 and the aperture diaphragm is 1.
This is done by widening 0. That is, the light emitted by the observation light source 2 is once formed into an image at the position of the photographing light source 4 by the condenser 3, and reaches the ring-shaped aperture stop 7 via the condenser 5 and the reflecting mirror 6. The light, which is turned into a ring-shaped illumination light beam by the ring-shaped aperture 7a of the ring-shaped aperture diaphragm 7, passes through the relay lenses 8 and 11 and reaches the reflecting mirror 12, where it is reflected in the direction of the eye E to be examined. In this way, the illumination light flux directed toward the eye E is the objective lens 13,
The light is irradiated to the fundus E 1 of the eye E through the cornea E 2 and crystalline lens E 3 .
こうして照射された眼底E1の像は被検眼Ｅの
外部へ向い対物レンズ１３によつて一旦結像した
後、反射鏡１２の開口１２ａを通つて撮影絞り１
４に至る。そして、合焦レンズ１５、結像レンズ
１６、ミラー１７を経て、フイルム２１あるいは
フイルム２１との共役位置に結像し、撮影又は肉
眼Ｉによる観察に供されるのである。この状態は
第８図イ，ロに示され、同図ロ中、２２，２２は
網膜が硝子体内に突出している部分を表わす。第
８図イ，ロから明らかなように、通常の眼底観
察・撮影の段階では極めて広い観察野を得ること
ができる。 The image of the fundus E 1 irradiated in this way is directed toward the outside of the subject's eye E and is once formed into an image by the objective lens 13 , and then passes through the aperture 12 a of the reflector 12 and passes through the photographic aperture 1 .
4. Then, through the focusing lens 15, the imaging lens 16, and the mirror 17, the image is formed on the film 21 or at a conjugate position with the film 21, and is used for photographing or observation with the naked eye I. This state is shown in FIGS. 8A and 8B, and in FIG. As is clear from FIGS. 8A and 8B, an extremely wide observation field can be obtained during normal fundus observation and photography.
次に、眼底E1のスリツト像観察・撮影につい
て説明する。この場合には、先づ、上述した通常
の眼底観察・撮影のときと同様に、スリツト絞り
９、開口絞り１０を大きく開いて眼底E1を照明
し、第８図イ，ロに示すように、広い観察野で眼
底の観察を行う。そして、この眼底観察によつて
眼底のスリツト像の撮影を行なうべき部位を決定
したときは、当該部位が観察野の中央に来るよう
に被検眼Ｅを誘導する。次いで、スリツト絞り
９、開口絞り１０を調整して適度なスリツト幅
Ｈ、長さ、及び方向とし、これによつて眼底E1
のスリツト像の観察・撮影を行なう。この時の被
検眼内での光束の状態を第７図に示す。Ｓはスリ
ツト照明光束であり、Ｋは観察・撮影用光束を示
す。なお、この場合は扇形状の開口絞りを使用し
た例である。この時の眼底像は第８図ハ，ニに示
されている。同図ニ中、２２，２２は網膜が硝子
体内に突出している部分を表わす。このとき、合
焦レンズ１５に連動してスリツト絞り９、開口絞
り１０は眼底E1との共役位置に変位するように
構成されているから、これによつて眼致E1のス
リツト像はフイルム２１あるいは２１との共役位
置に結像する。したがつて、眼底E1のスリツト
像の撮影や肉眼Ｉによる観察が可能となるのであ
る。眼底E1のスリツト像の観察・撮影において
は、特に網膜に突出部分２２，２２がある場合
に、その状態を良好にとらえることができる（第
８図ニ参照）。 Next, observation and photography of the slit image of the fundus E1 will be explained. In this case, first, the slit diaphragm 9 and the aperture diaphragm 10 are opened wide to illuminate the fundus E 1 , as shown in FIG. , observe the fundus in a wide observation field. When the part of the fundus where the slit image of the fundus should be photographed is determined through this observation of the fundus, the eye E to be examined is guided so that the part is located at the center of the observation field. Next, the slit diaphragm 9 and the aperture diaphragm 10 are adjusted to obtain an appropriate slit width H, length, and direction, thereby adjusting the fundus E 1
Observe and photograph the slit image. FIG. 7 shows the state of the light flux within the subject's eye at this time. S is a slit illumination light flux, and K is a light flux for observation and photographing. Note that this is an example in which a fan-shaped aperture stop is used. The fundus images at this time are shown in Fig. 8C and D. In the figure D, 22, 22 represent the parts where the retina protrudes into the vitreous body. At this time, the slit diaphragm 9 and the aperture diaphragm 10 are configured to be displaced to a conjugate position with the fundus E 1 in conjunction with the focusing lens 15, so that the slit image at the eye focus E 1 is transferred to the film. 21 or a conjugate position with 21. Therefore, it becomes possible to take a slit image of the fundus E1 and observe it with the naked eye I. In observing and photographing a slit image of the fundus E1 , especially when there are protruding parts 22, 22 on the retina, the condition can be clearly captured (see FIG. 8D).
上述の説明ではスリツト絞り１０を開くことに
より眼底を広い観察野で観察した後、このスリツ
ト絞り１０の巾を調整しているが、開口絞り及び
種々の巾をもつ複数のスリツト絞りを回転円板上
の周方向に配置し、この円板の回転により所定の
絞りを選択的に光路内に挿入することにより所定
の観察野及びスリツト巾を得るように構成しても
よいことは云うまでもない。 In the above explanation, the width of the slit diaphragm 10 is adjusted after opening the slit diaphragm 10 to observe the fundus in a wide observation field. Needless to say, it may be arranged in the upper circumferential direction and a predetermined observation field and slit width may be obtained by selectively inserting a predetermined diaphragm into the optical path by rotating this disk. .
なお、第９図イに示すように、スリツト絞り９
を光軸R1の垂直面内でＢ−B′方向へ変位可能な
構造とすれば、スリツト像２３は同図中ロ，ハに
示すように観察野内で移動することができるか
ら、スリツト像のスキヤニングが可能となる。 In addition, as shown in FIG. 9A, the slit aperture 9
If the slit image 23 has a structure that can be displaced in the direction B-B' within the vertical plane of the optical axis R1 , the slit image 23 can move within the observation field as shown in B and C in the figure. scanning becomes possible.
また、第１０図に示すように、スリツト絞り９
のＣ方向の移動量を大きくすればスリツトランプ
として使用することもできる。 In addition, as shown in FIG. 10, the slit aperture 9
If the amount of movement in the C direction is increased, it can also be used as a slit lamp.
以上説明したように、この発明の眼底カメラに
よれば、眼底のスリツト像の観察・撮影が通常の
眼底カメラの操作で行ない得るから、眼底のスリ
ツト像の観察・撮影に何らの熟練を要さないと共
に、広い観察野を有するから患部を短時間で確実
に視準することができるという効果を得る。 As explained above, according to the fundus camera of the present invention, the slit image of the fundus can be observed and photographed by normal fundus camera operations, so no skill is required to observe and photograph the slit image of the fundus. In addition, since it has a wide observation field, it has the effect that the affected area can be reliably sighted in a short time.
また、照明光束と観察・撮影用光束とを分離さ
せることにより、角膜等における反射光を確実に
除去することが可能となり、更に被検者にコンタ
クトレンズ等を装着させる必要がないから被検者
に大きな負担をかけることもないという効果を得
る。 In addition, by separating the illumination light beam from the observation/photographing light beam, it is possible to reliably remove reflected light from the cornea, etc., and there is no need for the test subject to wear contact lenses. This has the effect of not placing a large burden on the person.
第１図はこの発明の眼底カメラの概略構成を表
わす平面図、第２図はスリツト絞りの正面図、第
３図は開口絞りの正面図、第４図はリング状開口
絞りの正面図、第５図および第６図は扇形状開口
絞りの正面図、第７図イは眼内光束を表わす被検
眼の断面図、ロは眼底の正面図、ハは角膜表面に
おける照明光の正面図、第８図イ，ロは通常の眼
底撮影における観察野内の正面図、ハ，ニは眼底
のスリツト像撮影における観視野内の正面図、第
９図イはスリツト像のスキヤニングを可能とする
眼底カメラの要部平面図、ロ，ハはスリツト像の
スキヤニング状態を表わす観察野の正面図、第１
０図はスリツト絞りをスリツトランプとして使用
するこの発明の変更態様の要部平面図である。
Ｅ……被検眼、E1……眼底、１〜１１……照
明系、１３〜２１……観察・撮影系、７……リン
グ状開口絞り、７′……扇形状開口絞り、９……
スリツト絞り、１０……開口絞り、１５……合焦
レンズ（合焦部材）。
FIG. 1 is a plan view showing the schematic configuration of the fundus camera of the present invention, FIG. 2 is a front view of the slit diaphragm, FIG. 3 is a front view of the aperture diaphragm, and FIG. 4 is a front view of the ring-shaped aperture diaphragm. 5 and 6 are front views of the fan-shaped aperture diaphragm, FIG. Figure 8 A and B are front views of the observation field in normal fundus photography, C and D are front views of the viewing field in slit image photography of the fundus, and Figure 9 A is a front view of the observation field of the fundus camera that enables scanning of slit images. A plan view of the main part, B and C are front views of the observation field showing the scanning state of the slit image, and
FIG. 0 is a plan view of a main part of a modified embodiment of the present invention in which a slit diaphragm is used as a slit lamp. E...eye to be examined, E1 ...fundus, 1-11...illumination system, 13-21...observation/imaging system, 7...ring-shaped aperture diaphragm, 7'...fan-shaped aperture diaphragm, 9...
Slit diaphragm, 10...Aperture diaphragm, 15...Focusing lens (focusing member).
Claims (1)
明する照明系と、照明された前記眼底を観察・撮
影する観察・撮影系とを有する眼底カメラにおい
て、 前記照明系中の前記眼底との共役位置にスリツ
ト幅を可変としたスリツト絞りを配設して、前記
スリツト絞りにより照明された眼底のスリツト像
を観察・撮影可能にしたことを特徴とする眼底カ
メラ。 ２ 開閉自在の開口絞りをスリツト絞りに並設し
てなる特許請求の範囲第１項に記載の眼底カメ
ラ。 ３ スリツト絞りと前記開口絞りとを観察・撮影
系の合焦部材に連動させて照明系の光軸方向に変
位可能としてなる特許請求の範囲第２項記載の眼
底カメラ。 ４ スリツト絞りを回転可能としてなる特許請求
の範囲第３項記載の眼底カメラ。 ５ 照明系のリング状開口絞りを扇形状開口絞り
と相互交換可能としてなる特許請求の範囲第１項
記載の眼底カメラ。 ６ 開閉自在の開口絞りをスリツト絞りに並設し
てなる特許請求の範囲第５項記載の眼底カメラ。 ７ スリツト絞りと開口絞りとを観察・撮影系の
合焦部材に連動させて照明系の光軸方向に変位可
能としてなる特許請求の範囲第６項記載の眼底カ
メラ。 ８ スリツト絞りを回転可能としてなる特許請求
の範囲第７項記載の眼底カメラ。 ９ 扇形状開口絞りをスリツト絞りと同一絞り方
向に設け、扇形状開口絞りをスリツト絞りに連動
回転可能としてなる特許請求の範囲第８項記載の
眼底カメラ。[Scope of Claims] 1. A fundus camera having an illumination system that illuminates the fundus of the eye to be examined through a ring-shaped aperture diaphragm, and an observation/photographing system that observes and photographs the illuminated fundus, comprising: A fundus camera, characterized in that a slit diaphragm having a variable slit width is disposed at a conjugate position with the fundus, and a slit image of the fundus illuminated by the slit diaphragm can be observed and photographed. 2. The fundus camera according to claim 1, comprising an aperture diaphragm that can be opened and closed in parallel with a slit diaphragm. 3. The fundus camera according to claim 2, wherein the slit diaphragm and the aperture diaphragm are movable in the optical axis direction of the illumination system in conjunction with a focusing member of the observation/photographing system. 4. The fundus camera according to claim 3, wherein the slit diaphragm is rotatable. 5. The fundus camera according to claim 1, wherein the ring-shaped aperture diaphragm of the illumination system is interchangeable with the fan-shaped aperture diaphragm. 6. The fundus camera according to claim 5, comprising an aperture diaphragm that can be opened and closed in parallel with a slit diaphragm. 7. The fundus camera according to claim 6, wherein the slit diaphragm and the aperture diaphragm are displaceable in the optical axis direction of the illumination system in conjunction with a focusing member of the observation/photographing system. 8. The fundus camera according to claim 7, wherein the slit diaphragm is rotatable. 9. The fundus camera according to claim 8, wherein the fan-shaped aperture diaphragm is provided in the same aperture direction as the slit diaphragm, and the fan-shaped aperture diaphragm can be rotated in conjunction with the slit diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57161576A JPS5951832A (en) | 1982-09-18 | 1982-09-18 | Eye bottom camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57161576A JPS5951832A (en) | 1982-09-18 | 1982-09-18 | Eye bottom camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5951832A JPS5951832A (en) | 1984-03-26 |
| JPH0241329B2 true JPH0241329B2 (en) | 1990-09-17 |
Family
ID=15737739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57161576A Granted JPS5951832A (en) | 1982-09-18 | 1982-09-18 | Eye bottom camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5951832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448504A (en) * | 1990-06-15 | 1992-02-18 | Tokyo Electric Co Ltd | Lighting device for discharge lamp |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016030181A (en) * | 2014-07-30 | 2016-03-07 | 興和株式会社 | Ophthalmographic apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529316A (en) * | 1978-08-18 | 1980-03-01 | Canon Kk | Eyeground camera |
-
1982
- 1982-09-18 JP JP57161576A patent/JPS5951832A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529316A (en) * | 1978-08-18 | 1980-03-01 | Canon Kk | Eyeground camera |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448504A (en) * | 1990-06-15 | 1992-02-18 | Tokyo Electric Co Ltd | Lighting device for discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5951832A (en) | 1984-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3157236B2 (en) | Stereoscopic fundus camera | |
| JP2004208744A (en) | Ophthalmic photographing apparatus | |
| JPH0212572B2 (en) | ||
| JPH04193155A (en) | Fundus camera | |
| JPS59151935A (en) | Eye bottom camera | |
| JPS6148940B2 (en) | ||
| JPH045453B2 (en) | ||
| JPH0241329B2 (en) | ||
| JPH05245109A (en) | Eyeground camera | |
| JPH05309072A (en) | Ophthalmic measuring instrument | |
| JP3176657B2 (en) | Variable magnification fundus camera | |
| JPS5854821B2 (en) | fundus camera | |
| JPS6034378B2 (en) | fundus camera | |
| JPS6213012B2 (en) | ||
| JPS6057856B2 (en) | Fundus camera with built-in fixation device | |
| JPS6311131A (en) | Ophthalmic examination apparatus | |
| JPS6125375B2 (en) | ||
| JPS6152696B2 (en) | ||
| JP3683494B2 (en) | Eye lens observation device | |
| JPS632010Y2 (en) | ||
| JPS6145721A (en) | Eye obstacle examination apparatus | |
| JPS62270131A (en) | Eyeground examination apparatus | |
| JPS60171043A (en) | Ophthalmic light treatment apparatus | |
| JPS6128330B2 (en) | ||
| JPS5957634A (en) | Multi-slit mechanism in photo-slit lamp |