JPS6137941B2 - - Google Patents
Info
- Publication number
- JPS6137941B2 JPS6137941B2 JP54056560A JP5656079A JPS6137941B2 JP S6137941 B2 JPS6137941 B2 JP S6137941B2 JP 54056560 A JP54056560 A JP 54056560A JP 5656079 A JP5656079 A JP 5656079A JP S6137941 B2 JPS6137941 B2 JP S6137941B2
- Authority
- JP
- Japan
- Prior art keywords
- optical member
- refractive index
- tip
- eye
- examined
- 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
- 230000003287 optical effect Effects 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 7
- 210000004087 cornea Anatomy 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 239000011343 solid material Substances 0.000 claims description 2
- 239000005304 optical glass Substances 0.000 claims 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 8
- 210000005252 bulbus oculi Anatomy 0.000 description 7
- 229910001634 calcium fluoride Inorganic materials 0.000 description 7
- 210000000695 crystalline len Anatomy 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000005286 illumination Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 210000000399 corneal endothelial cell Anatomy 0.000 description 1
- 210000002889 endothelial cell Anatomy 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- -1 that is Chemical compound 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Microscoopes, Condenser (AREA)
- Eye Examination Apparatus (AREA)
Description
【発明の詳細な説明】
この発明は、眼球の内部を拡大観察または写真
撮影するための顕微鏡に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microscope for magnifying observation or photographing the inside of an eyeball.
この種の顕微鏡は、対物レンズの先端に位置す
る光学部材の先端面を直接或いは浸漬液層を介し
て眼球の角膜に接触させ、光軸に対して傾斜した
方向から対物レンズ内を逆行して照明光を眼球内
に導き、被検部位の深度に光学系のピントを合致
させて観察または撮影を行うのが普通である。 In this type of microscope, the tip surface of an optical member located at the tip of the objective lens is brought into contact with the cornea of the eyeball directly or through an immersion liquid layer, and the optical member is moved backwards through the objective lens from a direction oblique to the optical axis. Normally, illumination light is guided into the eyeball, and the optical system is focused on the depth of the examined site to perform observation or photography.
ところが、角膜の屈折率が1.37であるのに対し
て、その背後空間の液体の屈折率が1.33であるこ
とから判るように、例えば角膜内皮細胞層といつ
た被検部位の屈折率とその前後の屈折率との差が
僅少なため、被検部位を十分なコントラストをも
つて捉えるのが極めて困難である。これに加え、
先端光学部材を形成しているガラス質の屈折率は
約1.5であつて、角膜等と著しく異なる値を有し
ているので、先端光学部材の先端面における被検
像の損失が大きく問題になるばかりでなく、照明
用の光線がこの先端面で反射して、コントラスト
が低い被検像を一層不鮮明にしたり、検査視野を
著しく狭めたりする問題があつた。 However, while the refractive index of the cornea is 1.37, the refractive index of the liquid in the space behind it is 1.33. Since the difference between the refractive index and the refractive index of In addition to this,
The refractive index of the glass material forming the distal optical member is approximately 1.5, which is significantly different from that of the cornea, etc., so loss of the test image at the distal end surface of the distal optical member becomes a major problem. In addition, there was a problem in that the illumination light beam was reflected by this tip surface, making the test image with low contrast even more unclear, and significantly narrowing the field of view for the test.
この発明は、先端光学部材と眼球組織との間の
屈折率の急変を避けることにより、被検像の損失
や照明光の反射による妨害を減ずることを目的と
するもので、以下、これを図示の実施例によつて
説明する。 The purpose of this invention is to reduce the loss of the test image and interference due to reflection of illumination light by avoiding sudden changes in the refractive index between the tip optical member and the ocular tissue. This will be explained using an example.
１は眼球を示し、２は角膜、３はその内皮細胞
層、４は角膜背後空間、５は水晶体である。６は
顕微鏡対物レンズの鏡胴で、先端光学部材７を先
端から突出させて支持している。先端光学部材７
は、鏡胴６に支持されたガラス製の部分８の前端
に、フツ化カルシウム製の部分９を接着し、更に
その前面に反射防止膜１０を設け、更にその表面
に接触リング１１を接着してある。 1 indicates the eyeball, 2 the cornea, 3 its endothelial cell layer, 4 the retrocorneal space, and 5 the crystalline lens. Reference numeral 6 denotes a lens barrel of a microscope objective lens, which supports a tip optical member 7 by protruding from its tip. Tip optical member 7
A part 9 made of calcium fluoride is adhered to the front end of a part 8 made of glass supported by a lens barrel 6, an antireflection film 10 is provided on the front surface of the part 9, and a contact ring 11 is further adhered to the surface of the part 9 made of calcium fluoride. There is.
フツ化カルシウム部分９は厚さが２mm、接触リ
ング１１は厚さが１〜２mmであり、接触リングは
アクリル等の撥水性が少ない樹脂製または金属製
である。 The calcium fluoride portion 9 has a thickness of 2 mm, the contact ring 11 has a thickness of 1 to 2 mm, and the contact ring is made of a resin with low water repellency such as acrylic or metal.
眼球検査に際しては、摩酔薬を点眼した後、接
触リング１１で囲まれた内側に生理食塩水等の浸
漬液１２を充たした状態で、先端光学部材７を眼
球に接触させ、光学系のピントを例えば角膜内皮
細胞層３といつた被検部位に合わせて、観察また
は撮影を行う。 During an eyeball examination, after applying an anesthetic to the eye, the tip optical member 7 is brought into contact with the eyeball while the inside surrounded by the contact ring 11 is filled with an immersion liquid 12 such as physiological saline, and the optical system is focused. Observation or photography is performed depending on the test site, such as the corneal endothelial cell layer 3, for example.
ここで、先端光学部材７のガラス部分８屈折率
は約1.5、フツ化カルシウム部分９の屈折率は
1.43、反射防止膜１０の屈折率は1.38、浸漬液の
屈折率は約1.33である。 Here, the refractive index of the glass portion 8 of the tip optical member 7 is approximately 1.5, and the refractive index of the calcium fluoride portion 9 is approximately 1.5.
1.43, the refractive index of the antireflection film 10 is 1.38, and the refractive index of the immersion liquid is approximately 1.33.
なお、先端光学部材７中の部分９の構成材料と
しては、屈折率が適当であれば、フツ化カルシウ
ム、即ち螢石以外に、適宜の無機質または有機質
の透明固体材料を用いることができる。 Note that as the constituent material of the portion 9 in the tip optical member 7, any suitable inorganic or organic transparent solid material other than calcium fluoride, that is, fluorite, can be used as long as the refractive index is appropriate.
従つて、この発明によれば、屈折率が大きい先
端光学部材７のガラス部分８と、屈折率が小さい
浸漬液１２との間に、中間の屈折率を有するフツ
化カルシウム部分９が介在しているため、ガラス
部分８先端面での照明光線１３の反射による妨害
や像光線１４の損失を減じ、広い検査視野のもと
で鮮明な被検像を得ることが可能になる。 Therefore, according to the present invention, the calcium fluoride portion 9 having an intermediate refractive index is interposed between the glass portion 8 of the tip optical member 7 having a high refractive index and the immersion liquid 12 having a low refractive index. Therefore, interference due to reflection of the illumination light beam 13 on the tip surface of the glass portion 8 and loss of the image light beam 14 are reduced, and it becomes possible to obtain a clear image to be inspected in a wide inspection field of view.
図はこの発明の実施例の断面図である。
１…眼球、２…角膜、６…対物レンズ鏡胴、７
…先端光学部材、８…ガラス部分本体、９…フツ
化カルシウム部分、１２…浸漬液。
The figure is a sectional view of an embodiment of the invention. 1...Eyeball, 2...Cornea, 6...Objective lens barrel, 7
... Tip optical member, 8 ... Glass portion main body, 9 ... Calcium fluoride portion, 12 ... Immersion liquid.
Claims (1)
み、頂部が被検眼球の角膜に接触させられる環状
の囲壁を上記対物レンズから前方へ突出させ、こ
の囲壁の内部に上記角膜に近い光屈折率の浸漬液
を充たす空間を形成し、上記先端光学部材の被検
眼球と反対側の後部を光学ガラスで形成すると共
に被検眼球側の前部を上記光学ガラス及び上記浸
漬液の中間の光屈折率を有する透明固体材料で形
成したことを特徴とする眼球顕微鏡。1. An annular surrounding wall that surrounds the distal end surface of the distal optical member in the objective lens and whose apex is brought into contact with the cornea of the eye to be examined is protruded forward from the objective lens. The rear part of the tip optical member on the side opposite to the eye to be examined is formed of optical glass, and the front part on the side of the eye to be examined is formed with a light refracting space between the optical glass and the immersion liquid. An ocular microscope characterized in that it is made of a transparent solid material having a
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5656079A JPS55148531A (en) | 1979-05-08 | 1979-05-08 | Eyeball microscope |
| US06/139,142 US4367018A (en) | 1979-05-08 | 1980-04-10 | Eyeball microscope |
| GB8040328A GB2063511B (en) | 1979-05-08 | 1980-04-11 | Ophthalmic microscope |
| GB8012066A GB2049216B (en) | 1979-05-08 | 1980-04-11 | Ophthalmic microscope |
| DE19803049792 DE3049792C2 (en) | 1979-05-08 | 1980-05-08 | Ophthalmic microscope and adapter for an ophthalmic microscope |
| DE3017668A DE3017668C2 (en) | 1979-05-08 | 1980-05-08 | Ophthalmic microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5656079A JPS55148531A (en) | 1979-05-08 | 1979-05-08 | Eyeball microscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55148531A JPS55148531A (en) | 1980-11-19 |
| JPS6137941B2 true JPS6137941B2 (en) | 1986-08-26 |
Family
ID=13030495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5656079A Granted JPS55148531A (en) | 1979-05-08 | 1979-05-08 | Eyeball microscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55148531A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5881501U (en) * | 1981-11-27 | 1983-06-02 | 東京光学機械株式会社 | Immersion tip lens |
-
1979
- 1979-05-08 JP JP5656079A patent/JPS55148531A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55148531A (en) | 1980-11-19 |
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