JP5266557B2 - Erecting wide-angle fundus observation lens with double crossing of luminous flux - Google Patents
Erecting wide-angle fundus observation lens with double crossing of luminous flux Download PDFInfo
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- JP5266557B2 JP5266557B2 JP2009277982A JP2009277982A JP5266557B2 JP 5266557 B2 JP5266557 B2 JP 5266557B2 JP 2009277982 A JP2009277982 A JP 2009277982A JP 2009277982 A JP2009277982 A JP 2009277982A JP 5266557 B2 JP5266557 B2 JP 5266557B2
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- wide
- lens
- erecting
- observation lens
- luminous flux
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- 230000004907 flux Effects 0.000 title description 2
- 210000004087 cornea Anatomy 0.000 claims description 2
- 210000004220 fundus oculi Anatomy 0.000 claims 1
- 210000005252 bulbus oculi Anatomy 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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- Eye Examination Apparatus (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
本発明は、複数のレンズにより観察光を二重に交差させ、眼底像を正立で得られるようにした眼底の広角観察レンズに関するものである。 The present invention relates to a fundus wide-angle observation lens in which observation light is doubly intersected by a plurality of lenses so that a fundus image can be obtained upright.
眼科領域における眼底の観察レンズについては、凸レンズにより観察光を交差させることにより、眼底の広範な領域を一望できる広角観察レンズが開発されている。 As for an observation lens for the fundus in the ophthalmologic region, a wide-angle observation lens has been developed that allows a wide range of the fundus to be seen by crossing the observation light with a convex lens.
しかしながら、従来の広角観察レンズでは観察光の交差により得られる像が倒像となるため、外来の診察やレーザー時にはそれを意識する必要があり、又手術においてはインバーターなどの像を反転させるための設備を手術用顕微鏡に設置する必要があり、高価な上に操作も煩雑なものとなる。顕微鏡の種類のよっては設置できない場合も少なくない。 However, with conventional wide-angle observation lenses, the image obtained by the crossing of the observation light becomes an inverted image, so it is necessary to be aware of this during outpatient examinations and lasers, and for surgery to invert the image of an inverter etc. It is necessary to install the equipment on a surgical microscope, which is expensive and complicated to operate. Depending on the type of microscope, it may not be possible to install.
そこで、本発明にあっては、上記課題を解決するため、外筒内に複数のレンズを直列させ、観察光を二回交差させることにより、インバーターなどの設備を用いることなく正立像を得られるようにした。 Accordingly, in the present invention, in order to solve the above-described problem, an erect image can be obtained without using an inverter or the like by connecting a plurality of lenses in series in the outer cylinder and crossing the observation light twice. I did it.
本発明のみで正立像が得られるため、外来での眼底観察においては像の反転を意識する必要がなくなる。又、手術においてはインバーターなどの像を反転させる設備が不要であるため、手術操作が単純になり、装置の滅菌などの手間も少なくなる。又、どんな手術顕微鏡でも使用できる上、システム全体のコストも低減できる。 Since the erect image can be obtained only by the present invention, it is not necessary to be aware of the inversion of the image in the fundus observation in the outpatient. Further, since surgery does not require an apparatus for inverting the image, such as an inverter, the surgical operation is simplified and the time required for sterilization of the apparatus is reduced. In addition, any surgical microscope can be used, and the cost of the entire system can be reduced.
以下、本発明の実施の形態について図面を参照にしつつ説明する。図１は本発明の実施例であり、円筒状の外筒にレンズが複数組み込まれているため、断面図が最も適当である。５枚の高屈折ガラスレンズ（１、２、３、４、５）が、外筒（６）により固定されている。図２は実際に眼球に設置し、観察光の光束が２回交差する状態を示したものである。観察する眼球の角膜にレンズ「５」をあて、観察者はレンズ「１」（１）の側から観察する。図２では眼底のほぼ全域が一望できる設計であるが、使用するレンズの屈折率や形状および各レンズ間の距離により、観察できる眼底の範囲や拡大率は様々に異なった設計が可能である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and since a plurality of lenses are incorporated in a cylindrical outer cylinder, a sectional view is most suitable. Five high refractive glass lenses (1, 2, 3, 4, 5) are fixed by the outer cylinder (6). FIG. 2 shows a state where the light beam of the observation light is actually installed on the eyeball and intersects twice. The lens “5” is applied to the cornea of the eyeball to be observed, and the observer observes from the lens “1” (1) side. In FIG. 2, the design is such that almost the entire fundus can be seen. However, the range and magnification of the fundus that can be observed can be varied depending on the refractive index and shape of the lens used and the distance between the lenses.
１ レンズ［１］
２ レンズ［２］
３ レンズ［３］
４ レンズ［４］
５ レンズ［５］
６ 外筒
７ 眼球
８ 観察光の光束1 Lens [1]
2 Lens [2]
3 Lens [3]
4 Lens [4]
5 Lens [5]
6 Outer cylinder 7 Eyeball 8 Light flux of observation light
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009277982A JP5266557B2 (en) | 2009-11-16 | 2009-11-16 | Erecting wide-angle fundus observation lens with double crossing of luminous flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009277982A JP5266557B2 (en) | 2009-11-16 | 2009-11-16 | Erecting wide-angle fundus observation lens with double crossing of luminous flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011104315A JP2011104315A (en) | 2011-06-02 |
| JP5266557B2 true JP5266557B2 (en) | 2013-08-21 |
Family
ID=44228508
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009277982A Active JP5266557B2 (en) | 2009-11-16 | 2009-11-16 | Erecting wide-angle fundus observation lens with double crossing of luminous flux |
Country Status (1)
| Country | Link |
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| JP (1) | JP5266557B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1319362A1 (en) * | 1996-10-24 | 2003-06-18 | Volk Optical, Inc. | Ophthalmoscopic viewing system |
| JPH119554A (en) * | 1997-06-27 | 1999-01-19 | Nikon Corp | Lens for observing eyeground |
| JPH11235315A (en) * | 1998-02-20 | 1999-08-31 | Nikon Corp | Laser ophthalmoscope |
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2009
- 2009-11-16 JP JP2009277982A patent/JP5266557B2/en active Active
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| Publication number | Publication date |
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| JP2011104315A (en) | 2011-06-02 |
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