JP2709811B2 - Ophthalmic equipment - Google Patents
Ophthalmic equipmentInfo
- Publication number
- JP2709811B2 JP2709811B2 JP62027477A JP2747787A JP2709811B2 JP 2709811 B2 JP2709811 B2 JP 2709811B2 JP 62027477 A JP62027477 A JP 62027477A JP 2747787 A JP2747787 A JP 2747787A JP 2709811 B2 JP2709811 B2 JP 2709811B2
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- light
- thin film
- eye
- inspected
- 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 - Fee Related
Links
Landscapes
- Laser Surgery Devices (AREA)
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、特に眼科手術等に用いられるレーザー治療
装置に良好に適用できる眼科装置に関するものである。
[従来の技術]
一般に、この種のレーザー治療装置においては、第4
図に示すように、観察光学系の光軸Oに結合ミラー1を
斜設し、この接合ミラー1によって実線で示す不可視の
治療用レーザー光L1と点線で示す可視ガイド光L2とを、
被治療眼Eの方向に反射させるようにしている。
治療用レーザー光L1には一般にYAGレーザー光が使用
される。また、可視ガイド光L2はHe-Neレーザー光を用
いることが一般的であるが、時には白熱光源も用いられ
る。可視ガイド光L2は結合ミラー1に入射する時は治療
用レーザー光L1と重なっており、焦点Pが合っているか
を判り易くするためのものであり、この可視ガイド光L2
は2光束或いは3光束に分割されることが多い。
従来においては、結合ミラー1の表面にガイド光反射
膜2を部分的に分割して設け、更に治療用レーザー光反
射膜3を全面的に重ねて設けているため、僅かではある
が治療用レーザー光反射膜3の表面にはガイド光反射膜
2による凹凸が形成されることになり、治療用レーザー
光の波面Wが乱されて焦点Pへの集光状態が劣化すると
いう問題がある。
[発明の目的]
本発明の目的は、上述のように眼科装置において特性
の異なる2光束を同一の反射部材によって被検眼方向に
反射する際に、このような反射部材によって波面が乱さ
れ易くなり、被検眼への照射光束の集光状態等の劣化に
より眼科処理が不良になるという問題点を改善し、良好
な処理が行えるようにした眼科装置を提供することにあ
る。
[発明の概要]
上述の目的を達成するための本発明の要旨は、第1光
束と該第1光束とは異なる第2光束とを、同一の反射部
材により反射させて被検眼に照射するようにした眼科装
置において、前記反射部材に前記第1光束を反射する特
性を有する第1薄膜と前記第2光束を反射する特性を有
し部分的に配置した第2薄膜とを設け、前記反射部材を
光学系の平行光束部に配置し、前記第1薄膜は前記反射
部材面に直接施して前記第1光束を反射して被検眼に照
射し、前記第2薄膜は前記第1薄膜に関して被検眼とは
反対側に設けられ前記第2光束を反射して被検眼に照射
することを特徴とする眼科装置である。
[発明の実施例]
本発明を第1図〜第3図に図示の実施例に基づいて詳
細に説明する。
第1図は本発明に係るレーザー治療装置の一実施例を
示し、11はYAGレーザー光等の治療用レーザー光L1を発
光する治療用レーザー光源であり、この治療用レーザー
光L1の光軸に沿って、偏向ミラー12、光束拡大レンズ1
3、プリズム14、光束拡大レンズ15、斜設された結合ミ
ラー16が配置され、結合ミラー16の反射側には対物レン
ズ17が被治療眼Eと対向して配置されている。また、結
合ミラー16の表面S1には治療用レーザー光L1を反射する
光学薄膜が施され、一方裏面S2には可視ガイド光L2を反
射する光学薄膜が設けられている。プリズム14の側方に
はHe-Neレーザー光や白熱ランプ等の可視ガイド光L2を
発光するガイド光源18が設けられ、可視ガイド光L2はプ
リズム14を介して、治療用レーザー光L1の光路と一致す
るようにされている。更に、対物レンズ17と結合ミラー
16を結ぶ光軸Oの結合ミラー16の背後には、変倍レンズ
19、結像ミラー20、接眼レンズ21が配列され、対物レン
ズ17と変倍レンズ19との間は平行光束部となっており、
術者は接眼レンズ21を覗いて被治療眼Eを観察し得るよ
うになっている。
治療用レーザー光源11から出射された治療用レーザー
光L1は偏向ミラー12で反射され、光束拡大レンズ13、プ
リズム14、光束拡大レンズ15を経て平行光に拡大された
後に、結合ミラー16の表面S1で反射されて観察光学系の
光路と結合し、対物レンズ17によって被治療眼Eに集光
される。
一方、ガイド光源18から出射した可視ガイド光L2は、
プリズム14で反射されて光束拡大レンズ15により平行光
とされ治療用レーザー光L1と重なり、結合ミラー16の裏
面S2で反射され、対物レンズ17によって治療用レーザー
光L1と同じ位置に集光される。
第2図は結合ミラー16の裏面S2を示し、ハッチングで
示す両側の領域に可視ガイド光L2を反射する光学薄膜22
a、22bが設けられている。Aは可視ガイド光L2の当る領
域を示し、ここで光学薄膜22a、22bにより反射された可
視ガイド光L2は2光束に分離され、焦点位置では1つに
なる。また、焦点から少しずれた位置では可視ガイド光
L2は二分されるので、術者の観察眼eは焦点が合ってい
るか否かを明瞭に見分けることができる。
術者は可視ガイド光L2が1つになったときを見て、レ
ーザー光源11から治療用レーザー光L1を発射する。結合
ミラー16の表面S1には可視ガイド光L2を透過し、治療用
レーザー光L1のみを反射する光学薄膜が全面的に施され
ているので、治療用レーザー光L1は結合ミラー16の表面
S1で反射して、被治療眼Eの焦点位置に集光される。可
視ガイド光L2は結合ミラー16の裏面S2で反射するが、第
1図に示すように治療用レーザー光L1と光軸が合致する
ようにすることが望ましい。なお、結合ミラー16は観察
光学系の平行光束部に位置するため、裏面反射をする光
束でも非点収差を発生しないし、焦点位置もずれること
はない。
上述の実施例は結合部材として結合ミラー16を用いた
場合であるが、第1図の結合ミラー16の代りに第3図に
示すような接合プリズム23を用いてもよい。この場合
に、2つの接合されたプリズム23a、23bのうち、プリズ
ム23aの接合面に治療用レーザー光L1を反射する光学薄
膜が施され、可視ガイド光L2を分割反射する光学薄膜は
他のプリズム23bの接合面に施されている。即ち、この
場合の治療用レーザー光L1を反射する表面S1はプリズム
23aの接合面であり、可視ガイド光L2を反射する裏面S2
はプリズム23bの接合面ということになり、両面間の接
着剤層を可視ガイド光L2は通過するが、治療用レーザー
光L1は通過しないという差を生ずる。しかし、この接着
剤層は極めて薄いものであるから、光束のずれは殆ど生
じないし、治療用レーザー光L1の波面が乱れることもな
い。
[発明の効果]
以上説明したように本発明に係る眼科装置は、第1光
束を反射させる第1薄膜を反射部材面に間に第2薄膜を
介さずに直接施し、第2光束を反射させる第2薄膜を前
記第1薄膜に関して被検眼とは反対側に設けたことによ
り、第1光束は部分的に配置されている第2薄膜の影響
を波面に受けずに被検眼照射でき、かつ反射部材が平行
光束部に配置されているので第2光束も第2薄膜に達す
るまでの間に非点収差の発生や集光位置のずれなどに代
表される悪影響要因を含むことなく被検眼に照射でき、
第1、第2光束を用いて良好に眼科処理が実行できると
いう効果を有する。Description: FIELD OF THE INVENTION The present invention relates to an ophthalmologic apparatus which can be favorably applied to a laser treatment apparatus used particularly for ophthalmic surgery and the like. [Prior Art] Generally, in this type of laser treatment apparatus, the fourth
As shown in the figure, a coupling mirror 1 is obliquely provided on the optical axis O of the observation optical system, and an invisible treatment laser beam L1 indicated by a solid line and a visible guide beam L2 indicated by a dotted line are formed by the joining mirror 1.
The light is reflected in the direction of the eye E to be treated. Generally, a YAG laser beam is used as the treatment laser beam L1. In general, He-Ne laser light is used as the visible guide light L2, but sometimes an incandescent light source is also used. When the visible guide light L2 is incident on the coupling mirror 1, it overlaps with the therapeutic laser light L1 so as to make it easy to determine whether the focus P is in focus.
Is often split into two light beams or three light beams. In the prior art, the guide light reflecting film 2 is provided on the surface of the coupling mirror 1 in a partially divided manner, and the therapeutic laser light reflecting film 3 is further provided on the entire surface. Irregularities due to the guide light reflecting film 2 are formed on the surface of the light reflecting film 3, and there is a problem that the wavefront W of the therapeutic laser light is disturbed and the state of focusing on the focal point P is deteriorated. [Object of the Invention] An object of the present invention is to make it easy for a wavefront to be disturbed by such a reflecting member when two light beams having different characteristics are reflected in the direction of the eye to be examined by the same reflecting member in the ophthalmologic apparatus as described above. It is another object of the present invention to provide an ophthalmologic apparatus which can improve a problem that ophthalmic processing is deteriorated due to deterioration of a converging state or the like of an irradiation light beam to an eye to be inspected and can perform good processing. [Summary of the Invention] The gist of the present invention for achieving the above object is to irradiate an eye to be inspected with a first light beam and a second light beam different from the first light beam reflected by the same reflecting member. An ophthalmologic apparatus comprising: a first thin film having a property of reflecting the first light beam and a partially disposed second thin film having a property of reflecting the second light beam; Is disposed on the parallel light beam portion of the optical system, the first thin film is applied directly to the reflecting member surface, reflects the first light beam and irradiates the eye to be inspected, and the second thin film is the eye to be inspected with respect to the first thin film. An ophthalmologic apparatus provided on the opposite side to reflect the second light flux and irradiating the second light flux to the eye to be inspected. [Embodiment of the Invention] The present invention will be described in detail based on the embodiment shown in Figs. FIG. 1 shows an embodiment of a laser treatment apparatus according to the present invention. Reference numeral 11 denotes a treatment laser light source that emits treatment laser light L1 such as a YAG laser light. Along the deflection mirror 12, the beam magnifying lens 1
3, a prism 14, a light beam magnifying lens 15, and an obliquely provided coupling mirror 16 are disposed, and an objective lens 17 is disposed on the reflection side of the coupling mirror 16 so as to face the eye E to be treated. An optical thin film that reflects the treatment laser light L1 is provided on the front surface S1 of the coupling mirror 16, while an optical thin film that reflects the visible guide light L2 is provided on the rear surface S2. A guide light source 18 that emits visible guide light L2 such as a He-Ne laser light or an incandescent lamp is provided on the side of the prism 14, and the visible guide light L2 passes through the prism 14 and the optical path of the treatment laser light L1. Have been matched. Furthermore, objective lens 17 and coupling mirror
Behind the coupling mirror 16 of the optical axis O connecting the 16
19, an imaging mirror 20, an eyepiece 21 are arranged, and between the objective lens 17 and the variable power lens 19 is a parallel light beam portion,
The surgeon can look into the eyepiece 21 and observe the eye E to be treated. The treatment laser light L1 emitted from the treatment laser light source 11 is reflected by the deflecting mirror 12, and after being expanded into parallel light through the light beam magnifying lens 13, the prism 14, and the light beam magnifying lens 15, the surface S1 of the coupling mirror 16 And is combined with the optical path of the observation optical system and condensed on the eye E to be treated by the objective lens 17. On the other hand, the visible guide light L2 emitted from the guide light source 18 is
The light is reflected by the prism 14, is converted into parallel light by the light beam expanding lens 15, overlaps with the treatment laser light L1, is reflected by the back surface S2 of the coupling mirror 16, and is condensed by the objective lens 17 at the same position as the treatment laser light L1. . FIG. 2 shows the back surface S2 of the coupling mirror 16, and the optical thin film 22 that reflects the visible guide light L2 on both sides indicated by hatching.
a and 22b are provided. A indicates an area where the visible guide light L2 is applied. Here, the visible guide light L2 reflected by the optical thin films 22a and 22b is separated into two light fluxes, and becomes one at the focal position. At a position slightly deviated from the focal point, the visible guide light
Since L2 is bisected, the observation eye e of the operator can clearly discriminate whether or not the subject is in focus. The surgeon sees when the number of visible guide lights L2 becomes one, and emits the treatment laser light L1 from the laser light source 11. The surface S1 of the coupling mirror 16 is entirely coated with an optical thin film that transmits the visible guide light L2 and reflects only the treatment laser light L1, so that the treatment laser light L1
The light is reflected by S1 and condensed at the focal position of the eye E to be treated. Although the visible guide light L2 is reflected by the back surface S2 of the coupling mirror 16, it is desirable that the optical axis of the treatment laser light L1 coincides with the optical axis of the treatment laser light L1, as shown in FIG. Since the coupling mirror 16 is located in the parallel light beam portion of the observation optical system, even a light beam reflected on the back surface does not generate astigmatism, and the focal position does not shift. In the above embodiment, the coupling mirror 16 is used as the coupling member, but a coupling prism 23 as shown in FIG. 3 may be used instead of the coupling mirror 16 in FIG. In this case, of the two joined prisms 23a and 23b, an optical thin film that reflects the treatment laser light L1 is applied to the joint surface of the prism 23a, and the optical thin film that splits and reflects the visible guide light L2 is another prism. It is applied to the joint surface of 23b. That is, the surface S1 that reflects the treatment laser light L1 in this case is a prism.
23a, which is the bonding surface of 23a and reflects the visible guide light L2
Is the bonding surface of the prism 23b, and there is a difference that the visible guide light L2 passes through the adhesive layer between both surfaces but the treatment laser light L1 does not. However, since the adhesive layer is extremely thin, there is almost no shift in the light flux, and the wavefront of the treatment laser beam L1 is not disturbed. [Effects of the Invention] As described above, the ophthalmologic apparatus according to the present invention directly applies the first thin film for reflecting the first light beam to the reflecting member surface without interposing the second thin film therebetween, and reflects the second light beam. By providing the second thin film on the side opposite to the eye to be inspected with respect to the first thin film, the first light beam can be illuminated to the eye to be inspected without being affected by the second thin film which is partially disposed, and reflected. Since the member is arranged in the parallel light beam portion, the second light beam is also irradiated to the subject's eye without including any adverse effects such as astigmatism and a shift of the focusing position before reaching the second thin film. Can,
There is an effect that ophthalmologic processing can be favorably performed using the first and second light beams.
【図面の簡単な説明】
図面第1図〜第3図は本発明に係る眼科装置としてのレ
ーザー治療装置の実施例を示し、第1図はその構成図、
第2図は結合ミラーの裏面図、第3図は接合プリズムの
側面図であり、第4図は従来例の説明図である。
符号11は治療用レーザー光源、14はプリズム、16は結合
ミラー、17は対物レンズ、18はガイド光源、19は変倍レ
ンズ、20は結像レンズ、21は接眼レンズ、22a、22bは光
学薄膜、23は接合プリズムである。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 3 show an embodiment of a laser treatment apparatus as an ophthalmologic apparatus according to the present invention, FIG.
FIG. 2 is a rear view of the coupling mirror, FIG. 3 is a side view of the cemented prism, and FIG. 4 is an explanatory view of a conventional example. Reference numeral 11 is a therapeutic laser light source, 14 is a prism, 16 is a coupling mirror, 17 is an objective lens, 18 is a guide light source, 19 is a variable power lens, 20 is an imaging lens, 21 is an eyepiece, 22a and 22b are optical thin films , 23 are cemented prisms.
Claims (1)
一の反射部材により反射させて被検眼に照射するように
した眼科装置において、前記反射部材に前記第1光束を
反射する特性を有する第1薄膜と前記第2光束を反射す
る特性を有し部分的に配置した第2薄膜とを設け、前記
反射部材を光学系の平行光束部に配置し、前記第1薄膜
は前記反射部材面に直接施して前記第1光束を反射して
被検眼に照射し、前記第2薄膜は前記第1薄膜に関して
被検眼とは反対側に設けられ前記第2光束を反射して被
検眼に照射することを特徴とする眼科装置。 2.前記反射部材は結合ミラーであり、その表面で前記
第1光束を反射させ、裏面で前記第2光束を反射させる
ようにした特許請求の範囲第1項に記載の眼科装置。 3.前記反射部材は接合プリズムであり、その接合面の
片面で前記第1光束を反射させ、他面で前記第2光束を
反射させるようにした特許請求の範囲第1項に記載の眼
科装置。 4.前記第1光束は被検眼治療用レーザー光であり、前
記第2光束は合焦確認用可視ガイド光とした特許請求の
範囲第1項に記載の眼科装置。(57) [Claims] In an ophthalmologic apparatus in which a first light beam and a second light beam different from the first light beam are reflected by the same reflecting member to irradiate an eye to be inspected, a characteristic of reflecting the first light beam on the reflecting member is provided. A first thin film having a characteristic of reflecting the second light flux and a partially disposed second thin film, wherein the reflecting member is disposed in a parallel light beam portion of an optical system, and the first thin film is provided with the reflecting member. The first thin film is applied directly to a surface to reflect and irradiate the eye to be inspected, and the second thin film is provided on the opposite side of the first thin film from the eye to be inspected and reflects the second light to irradiate the eye to be inspected. An ophthalmologic apparatus characterized in that: 2. The ophthalmologic apparatus according to claim 1, wherein the reflection member is a coupling mirror, and reflects the first light beam on a front surface thereof and reflects the second light beam on a rear surface thereof. 3. The ophthalmologic apparatus according to claim 1, wherein the reflection member is a cemented prism, and the first light beam is reflected on one surface of the joint surface, and the second light beam is reflected on the other surface. 4. The ophthalmologic apparatus according to claim 1, wherein the first light beam is a laser beam for treatment of an eye to be examined, and the second light beam is a visible guide light for focusing confirmation.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62027477A JP2709811B2 (en) | 1987-02-07 | 1987-02-07 | Ophthalmic equipment |
US07/151,168 US4830483A (en) | 1987-02-07 | 1988-02-01 | Laser applying apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62027477A JP2709811B2 (en) | 1987-02-07 | 1987-02-07 | Ophthalmic equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63194655A JPS63194655A (en) | 1988-08-11 |
JP2709811B2 true JP2709811B2 (en) | 1998-02-04 |
Family
ID=12222197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62027477A Expired - Fee Related JP2709811B2 (en) | 1987-02-07 | 1987-02-07 | Ophthalmic equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2709811B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2518424Y2 (en) * | 1990-03-30 | 1996-11-27 | ホーヤ株式会社 | Ophthalmic laser treatment device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2815853B2 (en) * | 1984-06-25 | 1998-10-27 | 株式会社東芝 | Signal selection method |
-
1987
- 1987-02-07 JP JP62027477A patent/JP2709811B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPS63194655A (en) | 1988-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |