JPH066111B2 - Pupil illuminator - Google Patents
Pupil illuminatorInfo
- Publication number
- JPH066111B2 JPH066111B2 JP60109218A JP10921885A JPH066111B2 JP H066111 B2 JPH066111 B2 JP H066111B2 JP 60109218 A JP60109218 A JP 60109218A JP 10921885 A JP10921885 A JP 10921885A JP H066111 B2 JPH066111 B2 JP H066111B2
- Authority
- JP
- Japan
- Prior art keywords
- pupil
- infrared
- image
- bright
- television camera
- 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
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- Eye Examination Apparatus (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は肉眼の瞳孔の寸法を赤外線を利用して測定する
場合に、瞳孔のみを浮き出させるようにして照明するこ
とのできる瞳孔照明装置に関する。Description: TECHNICAL FIELD The present invention relates to a pupil illuminating device that can illuminate only the pupil when it is measured using infrared rays to measure the size of the pupil of the naked eye. .
一般に、視覚機能や中枢障害検査のために瞳孔寸法すな
わち直径や面積を正確に測定することが望まれている。In general, it is desired to accurately measure the pupil size, that is, the diameter and the area for the visual function and the central impairment test.
このため従来は、肉眼の前眼部組織の構成各部における
赤外線反射率に相違があることを利用して、赤外線テレ
ビジョン方式によって瞳孔の寸法を測定している。Therefore, conventionally, the dimension of the pupil is measured by an infrared television system by utilizing the fact that the infrared reflectance of each part of the tissue of the anterior segment of the naked eye is different.
すなわち、前眼部組織の赤外線反射率は強膜（白眼）、
虹彩、瞳孔の順に低下する。そこで、赤外線照射器から
前眼部組織にむけて赤外線を照射し、前眼部組織からの
反射赤外線を赤外線テレビカメラによって撮像し、その
画像をモニタテレビに映し出すとともに、電子回路的処
理をして瞳孔寸法を測定していた。この場合、モニタテ
レビに映る画像は、通常の可視光照明による前眼部組織
と大差ない自然な画像である。そして、瞳孔部分は最低
の赤外線反射率を有するので、暗く黒く映し出されてい
る。That is, the infrared reflectance of the anterior ocular tissue is the sclera (white eye),
The iris and pupil decrease in that order. Therefore, infrared rays are radiated from the infrared irradiator toward the anterior eye tissue, infrared rays reflected from the anterior eye tissue are imaged by an infrared TV camera, and the image is displayed on a monitor TV and processed electronically. The pupil size was being measured. In this case, the image displayed on the monitor TV is a natural image that is not much different from the tissue of the anterior segment of the eye by normal visible light illumination. Since the pupil portion has the lowest infrared reflectance, it is shown dark and black.
ところが前記従来の瞳孔測定方式においては、肉眼の直
前に赤外線テレビカメラを対向させ、前眼部組織に対し
て例えば左右および下方の三箇所の斜め前方からそれぞ
れ赤外線照射を行なうものであるから、第２図鎖線に示
すように、赤外線照射器の明るい虚像Ｇが半球状の角膜
に反射して、丁度瞳孔と虹彩領域に結像されてしまう。
そして、この赤外線照射器の虚像が、瞳孔の輪郭部を不
鮮明にしてしまい正確な瞳孔寸法の測定を困難とさせて
いた。また、この赤外線照射器の虚像の位置を瞳孔の領
域から除外させるためには、眼球、赤外線テレビカメラ
および赤外線照射器の位置関係を調整する必要があり、
特に眼球の形状等には個体差があるのでなかなか位置調
整するのが困難であった。また、瞳孔が大きく開いた散
瞳状態にある場合には、赤外線照射器の虚像が如何にし
ても瞳孔領域内に位置してしまい、正確な瞳孔寸法の測
定を行なうことができなかった。また、従来の赤外線照
射器は、光源をタングステン電流としその前面に赤外線
のみを透過する赤外線透過ガラスフィルタを設けて形成
されていたので、光源からの熱線が赤外線透過ガラスフ
ィルタを透過して前眼部組織に到達してしまい、測定中
に眼が熱く感じたり、角膜が乾いてしまうという不都合
があった。However, in the conventional pupillary measurement method, the infrared television camera is opposed immediately before the unaided eye, and infrared rays are irradiated to the anterior ocular tissue from, for example, three obliquely front sides, left and right, respectively. As shown by the chain line in FIG. 2, the bright virtual image G of the infrared irradiator is reflected on the hemispherical cornea and is exactly formed on the pupil and the iris region.
Then, the virtual image of the infrared irradiator makes the outline of the pupil unclear, which makes accurate measurement of the pupil size difficult. Further, in order to exclude the position of the virtual image of the infrared irradiator from the region of the pupil, it is necessary to adjust the positional relationship between the eyeball, the infrared television camera and the infrared irradiator,
In particular, it is difficult to adjust the position because there are individual differences in the shape of the eyeball. Further, when the pupil is in a mydriatic state with a wide open, the virtual image of the infrared irradiator is located in the pupil area in any way, and accurate pupil dimension measurement cannot be performed. Further, since the conventional infrared irradiator is formed by providing a tungsten current as a light source and providing an infrared transmitting glass filter which transmits only infrared rays on the front surface thereof, the heat ray from the light source transmits through the infrared transmitting glass filter and the anterior eye. There are inconveniences that the tissue reaches the partial tissue, the eye feels hot during the measurement, and the cornea dries.
本発明はこれらの点に鑑みてなされたものであり、瞳孔
全体を明るく鮮明な明瞳孔の像として照明することがで
き、かつ、角膜部での反射される赤外線発生源の虚像を
前記明瞳孔像内に収めて瞳孔寸法の測定を正確に行なう
ことのできる瞳孔照明装置を提供することを目的とす
る。The present invention has been made in view of these points, and it is possible to illuminate the entire pupil as a bright and clear image of a bright pupil, and a virtual image of an infrared ray generation source reflected at the cornea portion is the bright pupil. It is an object of the present invention to provide a pupil illuminator that can be accurately placed in an image to measure the pupil size.
本発明の瞳孔照明装置は、肉眼に向けて赤外線を発射す
る赤外線発生源と、この赤外線発生源から発射された赤
外線ビームを肉眼の瞳孔部分において瞳孔より小さく絞
って眼底に向けて入射せしめるとともに、前記眼底にて
反射された赤外線を瞳孔全体から外部に出射せしめる収
束レンズとを有することを特徴とする。The pupil illuminating device of the present invention is an infrared source that emits infrared rays toward the naked eye, and the infrared beam emitted from this infrared source is made smaller than the pupil in the pupil portion of the naked eye to be incident toward the fundus, and It has a converging lens which makes the infrared rays reflected by the fundus exit to the outside from the entire pupil.
以下、本発明の実施例を第１図から第５図について説明
する。An embodiment of the present invention will be described below with reference to FIGS.
第１図は本発明の瞳孔照明装置の一実施例を示す。FIG. 1 shows an embodiment of the pupil illuminator of the present invention.
図中、符号１は眼球２の瞳孔３を照明する瞳孔照明装置
であり、眼球２に対向して設けられている。この眼球２
は瞳孔３、紅彩４、強膜５および角膜６によって模式的
に表わされている。また、瞳孔照明装置１は瞳孔３を撮
像する赤外線テレビカメラ７と同軸的に一体にして設け
られており、更に眼球２の光軸とほぼ同軸にして設けら
れている。In the figure, reference numeral 1 is a pupil illuminating device that illuminates a pupil 3 of an eyeball 2, and is provided so as to face the eyeball 2. This eyeball 2
Are schematically represented by the pupil 3, the iris 4, the sclera 5 and the cornea 6. Further, the pupil illumination device 1 is provided coaxially with the infrared television camera 7 that images the pupil 3, and is also provided substantially coaxial with the optical axis of the eyeball 2.
更に説明すると、瞳孔照明装置１のケーシング８内には
眼球２に向けて赤外線を発射する赤外線発生源としての
赤外線ＬＥＤ９を固着して設け、この赤外線ＬＥＤ９か
ら発射される赤外線ビーム１０を瞳孔３の部分において
直径約２mmという最小の瞳孔３より小さく絞る収束レン
ズ１１が設けられている。また、瞳孔照明装置１は赤外
線テレビカメラ７の対物レンズ１２の前面部に適当な手
段によって取付けられている。この対物レンズ１２の後
方には赤外線透過ガラスフィルタ１３を有する撮像素子
１４が設けられている。また、瞳孔照明装置１と赤外線
テレビカメラ７との光学的関係は、赤外線テレビカメラ
７のピントを瞳孔３に合わせた時に、赤外線ＬＥＤ９か
ら発射される赤外線ビーム１０が瞳孔３のほぼ中心部で
０に収束されるように形成されている。すなわち、第１
図に示すように瞳孔３の部分を基準位置にして、収束レ
ンズ１１から赤外線ＬＥＤ９および瞳孔３までの距離
1，2からなる照射系の位置関係と、対物レンズ１２か
ら撮像素子１４および瞳孔３までの距離Ｌ1，Ｌ2からな
る撮像系の位置関係とを調整しておく。More specifically, an infrared LED 9 as an infrared source for emitting infrared rays toward the eyeball 2 is fixedly provided in the casing 8 of the pupil illumination device 1, and an infrared beam 10 emitted from the infrared LED 9 is emitted to the pupil 3 of the pupil 3. A converging lens 11 is provided that narrows the aperture smaller than the smallest pupil 3 having a diameter of about 2 mm. The pupil illumination device 1 is attached to the front surface of the objective lens 12 of the infrared television camera 7 by an appropriate means. Behind the objective lens 12, an image pickup device 14 having an infrared transmitting glass filter 13 is provided. Further, the optical relationship between the pupil illuminating device 1 and the infrared television camera 7 is such that when the infrared television camera 7 is focused on the pupil 3, the infrared beam 10 emitted from the infrared LED 9 is 0 at substantially the center of the pupil 3. Is formed so as to converge to. That is, the first
As shown in the figure, the distance from the converging lens 11 to the infrared LED 9 and the pupil 3 is set with the pupil 3 as the reference position.
The positional relationship of the irradiation system composed of 1 and 2 and the positional relationship of the imaging system composed of the distances L 1 and L 2 from the objective lens 12 to the image sensor 14 and the pupil 3 are adjusted.
次に、本発明による瞳孔の照明について説明する。Next, the illumination of the pupil according to the present invention will be described.
先ず、瞳孔照明装置１の前方にあるあご台（図示せず）
上にあごを載せて、赤外線テレビカメラ７の位置を調整
してそのピントを瞳孔３に合せる。これにより自動的に
瞳孔照明装置１の赤外線ＬＥＤ９から発射される赤外線
ビーム１０は瞳孔３の位置で０に収束することとなる。
この赤外線ビーム１０は収束レンズ１１により絞られ瞳
孔３の位置で瞳孔３のほぼ中心に瞳孔３より小さいほぼ
０の状態に収束される。このようにして眼球２内に照射
された赤外線ビーム１０は眼底１５部分において反射さ
れるとともに拡散させられる。そして、眼底１５部分で
反射された赤外線は瞳孔３の全体から外部に出射し、瞳
孔３の全体の輪郭を赤外線によって明るく鮮明に浮き立
たせた明瞳孔像Ａ（第２図の斜線部分）として照明す
る。この明瞳孔像Ａは赤外線テレビカメラ７の対物レン
ズ１２、赤外線透過ガラスフィルタ１３を経て撮像素子
１４により撮像され、モニタテレビ（図示せず）に映し
出される。このモニタテレビに映し出された画像は瞳孔
３の部分が他の紅彩４、強膜５よりきわだって明るく鮮
明なものであり、また角膜６に反射する瞳孔照明装置１
の虚像ｇは瞳孔３の明瞳孔像Ａ内に同化しており、テレ
ビジョン系による電子回路的処理による瞳孔寸法の自動
測定を何ら阻害するものではない。First, a chin stand (not shown) in front of the pupil illuminator 1
Place the chin on the top and adjust the position of the infrared television camera 7 to bring its focus into the pupil 3. As a result, the infrared beam 10 emitted from the infrared LED 9 of the pupil illumination device 1 automatically converges to 0 at the position of the pupil 3.
The infrared beam 10 is focused by a converging lens 11 and converged at the position of the pupil 3 to a substantially zero state, which is smaller than that of the pupil 3, at substantially the center of the pupil 3. The infrared beam 10 thus radiated into the eyeball 2 is reflected by the fundus 15 and diffused. Then, the infrared light reflected by the fundus 15 is emitted from the entire pupil 3 to the outside, and is illuminated as a bright pupil image A (hatched portion in FIG. 2) in which the outline of the entire pupil 3 is brightly and clearly erected by the infrared light. To do. The bright pupil image A is imaged by the image sensor 14 through the objective lens 12 of the infrared television camera 7 and the infrared transmission glass filter 13, and is displayed on a monitor television (not shown). In the image displayed on the monitor television, the pupil 3 is much brighter and clearer than the other iris 4 and the sclera 5, and the pupil illuminating device 1 that reflects on the cornea 6 is displayed.
Virtual image g is assimilated in the bright pupil image A of the pupil 3 and does not hinder the automatic measurement of the pupil size by electronic circuit processing by the television system.
このように本実施例においては、瞳孔３より小さく絞っ
た赤外線ビーム１０を瞳孔３から眼球２内に照射し、瞳
孔３から出射される反射赤外線をもって瞳孔３を照明す
るものであるから、瞳孔３を極めて明確な輪郭を有する
明瞳孔像Ａとしてとらえることができ、その後の瞳孔寸
法の測定を極めて容易に行なうことができる。また、角
膜６に映る瞳孔照明装置１の虚像ｇが瞳孔寸法測定の邪
魔にならないので、従来のような照明系および撮像系の
微妙な位置の設定調節を不要とし、極めて簡単に測定を
行なうことができる。特に、瞳孔３が大きく開いた散瞳
時においても瞳孔３を正確に照明し、確実に瞳孔寸法の
測定を行なうことができる。As described above, in the present embodiment, the infrared beam 10 that is narrower than the pupil 3 is radiated from the pupil 3 into the eyeball 2, and the reflected infrared rays emitted from the pupil 3 illuminate the pupil 3. Can be regarded as a bright pupil image A having an extremely clear contour, and the subsequent pupil dimension measurement can be performed very easily. In addition, since the virtual image g of the pupil illuminating device 1 reflected on the cornea 6 does not interfere with the measurement of the pupil size, it is not necessary to adjust the setting of the illumination system and the image pickup system, which is required in the related art, and the measurement can be performed very easily. You can In particular, even when the pupil 3 is wide open, the pupil 3 can be accurately illuminated and the pupil size can be reliably measured.
また、安全性にも優れており眼に何ら害を与えないない
ものである。現在、赤外線の眼に対する安全基準は定ま
っていないが、例えば米国標準規格ＡＮＳＩ，Ｚ１３
６，１−１９８０で規定しているレーザ光の安全基準を
適用すると、波長が８２０nmのレーザ光の直接視時にお
ける許容限は約８００μＷ／cm2とされている。一方、
本発明における赤外線ビームはレーザ光ではないが、瞳
孔寸法の測定に十分な明るさを有する明瞳孔像Ａを得る
のに必要な放射エネルギは約２００μＷ／cm2であり、
前記許容限の１／４以下であった。更に、本実施例にお
いては熱線を生じない赤外線ＬＥＤ９を赤外線発生源と
しているので、長時間測定しても眼が熱くなったり、角
膜６が乾くようなこともない。It is also highly safe and does not cause any damage to the eyes. At present, there is no safety standard for infrared eyes, but for example, American standard ANSI, Z13
When the safety standard for laser light defined in No. 6,1-1980 is applied, the permissible limit of direct view of laser light having a wavelength of 820 nm is about 800 μW / cm 2 . on the other hand,
Although the infrared beam in the present invention is not a laser beam, the radiant energy required to obtain a bright pupil image A having sufficient brightness for measuring the pupil size is about 200 μW / cm 2 .
It was 1/4 or less of the allowable limit. Further, in this embodiment, since the infrared LED 9 that does not generate heat rays is used as an infrared ray generation source, the eyes do not become hot and the cornea 6 does not dry even after long-time measurement.
第３図は本発明の他の実施例を示す。FIG. 3 shows another embodiment of the present invention.
本実施例は、瞳孔照明装置１を眼球２と赤外線テレビカ
メラ７との光軸の外部にしかもその光軸と直交する位置
に設け、赤外線テレビカメラ７の対物レンズ１２の前方
に設けたハーフミラー１７によって瞳孔照明装置１から
発射された赤外線ビーム１０を瞳孔３方向に反射させ
て、赤外線ビーム１０を最小の瞳孔３より小さく絞って
眼球２内に照射するように形成したものである。In this embodiment, the pupil illuminating device 1 is provided outside the optical axis of the eyeball 2 and the infrared television camera 7 and at a position orthogonal to the optical axis, and is a half mirror provided in front of the objective lens 12 of the infrared television camera 7. The infrared beam 10 emitted from the pupil illuminating device 1 by 17 is reflected in the direction of the pupil 3 so that the infrared beam 10 is narrowed down to a size smaller than the smallest pupil 3 and radiated into the eyeball 2.
本実施例においては赤外線テレビカメラ７の前面にハー
フミラー１７のみしか設けていないので、明るい瞳孔３
から赤外線テレビカメラ７に入射される明瞳孔像Ａの光
量を減少させることがなく、より一層明るくて鮮明な明
瞳孔像Ａを撮像して、瞳孔寸法の測定を行なうことがで
きる。また、対物レンズ１２を絞って焦点深度を上げて
測定することもできる。また、収束レンズ１１の径を大
きくすることができるので、眼底１５の広い範囲に亘っ
て赤外線ビーム１０を拡散して照射することができるの
で、網膜中心窩に照射される赤外線量を低減させて、眼
の安全性を高くすることができる。In this embodiment, since only the half mirror 17 is provided in front of the infrared television camera 7, the bright pupil 3
It is possible to measure the pupil size by capturing a brighter and clearer bright pupil image A without reducing the amount of light of the bright pupil image A incident on the infrared television camera 7. Further, the objective lens 12 can be narrowed down to increase the depth of focus for measurement. Further, since the diameter of the converging lens 11 can be increased, the infrared beam 10 can be diffused and irradiated over a wide range of the fundus 15, so that the amount of infrared rays irradiated to the fovea centralis can be reduced. , Eye safety can be increased.
第４図は本発明の更に他の実施例を示し、対物レンズ１
２の前に小形反射ミラー１８を設置し、この小形反射ミ
ラー１８に向けて光軸と直交方向に設けた瞳孔照明装置
１より赤外線ビーム１０を照射させて、撮像時における
光量損失を小さく抑えたものである。また、この小形反
射ミラー１８の位置や角度を調節することにより、眼球
２と同軸な照明による角膜６における反射赤外線の量を
低減させることもできる。FIG. 4 shows still another embodiment of the present invention, in which the objective lens 1
2, a small reflecting mirror 18 is installed in front of the second reflecting mirror 18, and an infrared beam 10 is emitted toward the small reflecting mirror 18 from a pupil illuminating device 1 provided in a direction orthogonal to the optical axis to suppress a light amount loss during imaging. It is a thing. Further, by adjusting the position and angle of the small reflecting mirror 18, the amount of reflected infrared rays on the cornea 6 due to the illumination coaxial with the eyeball 2 can be reduced.
第５図は本発明の更に他の実施例を示し、赤外線ビーム
１０が直に網膜中心窩に照射されないように形成したも
のである。すなわち、複数（本実施例では２個）の瞳孔
照明装置１を対物レンズ１２の側方に配置して、眼球２
の光軸と角度θをもって赤外線ビーム１０を照射させ、
かつ赤外線ビーム１０を瞳孔３の部分で最小の瞳孔３よ
り小さく絞るとともに、角膜６に反射した瞳孔照明装置
１の虚像ｇが最小の瞳孔３内に収まるように瞳孔照明装
置１の径Φと角度θとを調節して形成している。FIG. 5 shows still another embodiment of the present invention, which is formed so that the infrared beam 10 is not directly irradiated on the fovea centralis. That is, a plurality of (two in this embodiment) pupil illuminators 1 are arranged beside the objective lens 12 and the eyeballs 2
Irradiate the infrared beam 10 at an angle θ with the optical axis of
In addition, the infrared beam 10 is narrowed to a size smaller than the smallest pupil 3 in the pupil 3, and the diameter Φ of the pupil illuminator 1 is set so that the virtual image g of the pupil illuminator 1 reflected on the cornea 6 is contained in the smallest pupil 3. It is formed by adjusting θ and.
これにより、網膜中心窩への赤外線ビーム１０の入射を
避けることができ、しかも眼底１５からの反射赤外線を
バランスさせ、均一な明るさを有する明瞳孔像Ａを得る
ことができる。This makes it possible to avoid the infrared beam 10 from entering the fovea of the retina, balance the infrared rays reflected from the fundus 15, and obtain a bright pupil image A having uniform brightness.
なお、撮像素子１４としてビジコン系撮像管を用いた場
合には問題とならないが、固体イメージセンサを用いる
と、角膜６の反射による瞳孔照明装置１の反射明スポッ
トにより、同固体イメージセンサがブルーミングを発生
し、時には垂直のスメアとなって瞳孔寸法の測定を妨害
することがある。この場合には第１図鎖線に示すよう
に、収束レンズ１１および赤外線透過ガラスフィルタ１
３の直前にそれぞれ偏光素子１６ａ，１６ｂを設け、双
方の相対的位相を変更させて、角膜６における反射赤外
線を測定上無視できるように低減させるとよい。It should be noted that when a vidicon-based image pickup tube is used as the image pickup device 14, there is no problem, but when a solid-state image sensor is used, the solid-state image sensor causes blooming due to a reflected bright spot of the pupil illuminating device 1 due to the reflection of the cornea 6. It can occur and sometimes interfere with the measurement of pupil size as vertical smears. In this case, as shown by the chain line in FIG. 1, the converging lens 11 and the infrared transmitting glass filter 1
It is advisable to provide polarizing elements 16a and 16b immediately before 3 and change the relative phases of the polarizing elements 16a and 16b so as to reduce the reflected infrared rays in the cornea 6 so as to be negligible in measurement.
なお、眼底の赤外線反射率は視神経乳頭が高いことが知
られている。これは中心窩から鼻側に約１５度に位置
し、直径約５度の円形のいわゆる視野欠損部（マリオッ
トの盲点）である。従って、本発明においては、この部
位に入射すべく赤外線照射を行なうことにより、更によ
い効果を得ることができ、黄斑部照射より安全性も高く
することができる。It is known that the infrared reflectance of the fundus of the optic disc is high. This is a circular so-called visual field defect portion (Marriott's blind spot), which is located approximately 15 degrees to the nasal side from the fovea and has a diameter of approximately 5 degrees. Therefore, in the present invention, by irradiating infrared rays so as to be incident on this site, a further better effect can be obtained, and the safety can be made higher than that of macular irradiation.
このように本発明の瞳孔照明装置は、瞳孔全体を明るく
鮮明な明瞳孔の像として照明することができ、かつ、角
膜部で反射される赤外線発生源の虚像を前記明瞳孔像内
に収めて瞳孔寸法の測定を正確に行なうことができると
ともに、眼の安全性を保持しつつこれらの測定を行なう
ことができる等の効果を奏する。As described above, the pupil illuminator of the present invention can illuminate the entire pupil as a bright and clear image of the bright pupil, and stores a virtual image of the infrared ray generation source reflected by the cornea in the bright pupil image. The pupil size can be accurately measured, and these measurements can be performed while maintaining eye safety.
図面は本発明の瞳孔照明装置の実施例を示し、第１図は
本発明の一実施例を設けた瞳孔撮像装置を示す概念図、
第２図は本発明装置によって照明された明瞳孔像を示す
図、第３図から第５図はそれぞれ本発明装置の他の実施
例を示す第１図同様の図である。 １…瞳孔照明装置、２…眼球、３…瞳孔、 ７…赤外線テレビカメラ、９…赤外線ＬＥＤ、 １０…赤外線ビーム、１１…収束レンズ。The drawings show an embodiment of the pupil illumination device of the present invention, and FIG. 1 is a conceptual diagram showing a pupil image pickup device provided with an embodiment of the present invention,
FIG. 2 is a diagram showing a bright pupil image illuminated by the device of the present invention, and FIGS. 3 to 5 are views similar to FIG. 1 showing another embodiment of the device of the present invention. DESCRIPTION OF SYMBOLS 1 ... Pupil illumination device, 2 ... Eyeball, 3 ... Pupil, 7 ... Infrared television camera, 9 ... Infrared LED, 10 ... Infrared beam, 11 ... Converging lens.
Claims (2)
源と、この赤外線発生源から発射された赤外線ビームを
肉眼の瞳孔部分において瞳孔より小さく絞って眼底に向
けて入射せしめるとともに、前記眼底にて反射された赤
外線を瞳孔全体から外部に出射せしめる収束レンズとを
有することを特徴とする瞳孔照明装置。1. An infrared source that emits infrared rays toward the naked eye, and an infrared beam emitted from the infrared source is made smaller than the pupil in the pupil portion of the naked eye so that the infrared beam enters the fundus. And a converging lens that makes infrared rays reflected by the entire pupil exit to the outside.
レビカメラと一体的に設けられているとともに、前記赤
外線テレビカメラを瞳孔に焦点を合わせると赤外線発生
源から発射された赤外線ビームが瞳孔部分で小さく絞ら
れる位置に設けられていることを特徴とする特許請求の
範囲第１項記載の瞳孔照明装置。2. The infrared source is provided integrally with an infrared television camera for imaging a pupil, and when the infrared television camera is focused on the pupil, the infrared beam emitted from the infrared source is a pupil portion. The pupil illuminator according to claim 1, wherein the pupil illuminator is provided at a position that is narrowed down by the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60109218A JPH066111B2 (en) | 1985-05-23 | 1985-05-23 | Pupil illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60109218A JPH066111B2 (en) | 1985-05-23 | 1985-05-23 | Pupil illuminator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61268226A JPS61268226A (en) | 1986-11-27 |
| JPH066111B2 true JPH066111B2 (en) | 1994-01-26 |
Family
ID=14504590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60109218A Expired - Lifetime JPH066111B2 (en) | 1985-05-23 | 1985-05-23 | Pupil illuminator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066111B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0782539B2 (en) * | 1988-07-14 | 1995-09-06 | 株式会社エイ・ティ・アール通信システム研究所 | Pupil imager |
| JP5829850B2 (en) * | 2011-03-22 | 2015-12-09 | パナソニック株式会社 | Pupil measurement device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS549490A (en) * | 1977-06-22 | 1979-01-24 | Canon Kk | Ophthalmologic device |
| JPS54108623A (en) * | 1978-02-14 | 1979-08-25 | Olympus Optical Co Ltd | Non-mydriasis retinal camera |
| JPS552460A (en) * | 1978-06-22 | 1980-01-09 | Minolta Camera Kk | Pupil diameter measuring apparatus |
| JPS5843090A (en) * | 1981-09-08 | 1983-03-12 | オムロン株式会社 | Seat abnormal condition detection device |
| JPS59230535A (en) * | 1983-06-13 | 1984-12-25 | キヤノン株式会社 | Ophthalmic measuring apparatus |
| JPS61100227A (en) * | 1984-10-23 | 1986-05-19 | キヤノン株式会社 | Ophthalmological measuring device |
-
1985
- 1985-05-23 JP JP60109218A patent/JPH066111B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61268226A (en) | 1986-11-27 |
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