JP2591735Y2 - Video microscope observation probe - Google Patents
Video microscope observation probeInfo
- Publication number
- JP2591735Y2 JP2591735Y2 JP1992037198U JP3719892U JP2591735Y2 JP 2591735 Y2 JP2591735 Y2 JP 2591735Y2 JP 1992037198 U JP1992037198 U JP 1992037198U JP 3719892 U JP3719892 U JP 3719892U JP 2591735 Y2 JP2591735 Y2 JP 2591735Y2
- Authority
- JP
- Japan
- Prior art keywords
- lens system
- imaging lens
- subject
- auxiliary lens
- observation probe
- 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
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Microscoopes, Condenser (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は医療用や工業用に用いら
れる観察用プローブに係り、特に被写体を良好に照明し
て倍率を変換することのできるビデオ顕微鏡の観察用プ
ローブに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an observation probe for medical or industrial use, and more particularly to an observation probe of a video microscope capable of illuminating a subject and changing magnification.
【0002】[0002]
【従来の技術】通常のカメラにおいて、レンズ系の倍率
を変換する手段としては、レンズ系の前面に補助レンズ
を設けるか、レンズ系の後面に蛇腹などを設けてレンズ
とフィルム面との間の距離を変えるなどの方法が知られ
ている。固体撮像素子(以下CCDと称する)を備えた
ビデオ顕微鏡の観察用プローブにおいて、倍率を変換す
るための補助レンズを設けた場合の従来の構成の一例を
図4に示す。図4において、撮像レンズ系1の前面には
撮像レンズ系1の外径とほぼ等しい外径の、倍率を上げ
るための補助レンズ2が設けられている。また撮像レン
ズ系1の後面には撮像レンズ系1によって結像された被
写体3の像を受光するCCD4が配置されている。さら
に撮像レンズ系1と補助レンズ2との間の光軸上には、
焦点深度を深くするための絞り5が設けられている。2. Description of the Related Art In a normal camera, as a means for converting the magnification of a lens system, an auxiliary lens is provided on the front surface of the lens system, or a bellows is provided on the rear surface of the lens system so that the distance between the lens and the film surface is increased. Methods such as changing the distance are known. FIG. 4 shows an example of a conventional configuration in which an auxiliary lens for converting a magnification is provided in an observation probe of a video microscope provided with a solid-state imaging device (hereinafter referred to as a CCD). In FIG. 4, an auxiliary lens 2 having an outer diameter substantially equal to the outer diameter of the imaging lens system 1 for increasing the magnification is provided on the front surface of the imaging lens system 1. On the rear surface of the imaging lens system 1, a CCD 4 for receiving an image of the subject 3 formed by the imaging lens system 1 is arranged. Further, on the optical axis between the imaging lens system 1 and the auxiliary lens 2,
An aperture 5 for increasing the depth of focus is provided.
【0003】被写体3の観察には被写体3を照明する必
要がある。このため撮像レンズ系1の外周には、例えば
直径 0.5mmの導光部材としての光ファイバ6が約120 本
同心状に配設されている。そして図示しない光源から発
射された光は光ファイバ6に導かれて前面側に出光し、
撮像レンズ系1の前面外周の内側と外側に同心状に設け
られた反射ミラー7,8により反射されて、被写体3を
照明するようになっている。To observe the subject 3, it is necessary to illuminate the subject 3. For this reason, about 120 optical fibers 6 as a light guide member having a diameter of, for example, 0.5 mm are concentrically arranged on the outer periphery of the imaging lens system 1. Light emitted from a light source (not shown) is guided to the optical fiber 6 and emitted to the front side,
The light is reflected by reflecting mirrors 7 and 8 provided concentrically inside and outside the outer periphery of the front surface of the imaging lens system 1 to illuminate the subject 3.
【0004】しかしながら図4に示す従来のビデオ顕微
鏡の観察用プローブによると、補助レンズ2が設けられ
ていない場合の通常の被写体3aの位置には照明光が到
達するが、補助レンズ2を設けて倍率を上げたときの被
写体3の位置には、反射鏡7,8および補助レンズ2の
ケース9が光路を遮断するため照明光が充分到達しない
という問題があった。However, according to the observation probe of the conventional video microscope shown in FIG. 4, the illumination light reaches the position of the normal subject 3a when the auxiliary lens 2 is not provided, but the auxiliary lens 2 is provided. There is a problem that the illumination light does not sufficiently reach the position of the subject 3 when the magnification is increased because the reflecting mirrors 7 and 8 and the case 9 of the auxiliary lens 2 block the optical path.
【0005】一方、絞り5をなくした場合は、焦点深度
の調整ができず、また光軸から離れた光線が撮像レンズ
系1に入射するため、撮像レンズ系の収差の影響を受
け、画像にボケを生ずるという問題があった。On the other hand, if the diaphragm 5 is omitted, the depth of focus cannot be adjusted, and light rays distant from the optical axis enter the imaging lens system 1, so that the image is affected by aberration of the imaging lens system, and There was a problem of blurring.
【0006】本考案はこのような点に鑑みてなされたも
ので、被写体を良好に照明してレンズ倍率を容易に変換
することができ、収差の発生が少なく焦点深度が深いビ
デオ顕微鏡の観察用プローブを提供することを目的とす
る。The present invention has been made in view of such a point, and is suitable for observing a video microscope which can illuminate a subject satisfactorily and convert a lens magnification easily, has little aberration and has a large depth of focus. It is intended to provide a probe.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、請求項1に記載された本考案は、CCD上に被写体
の像を結像する撮像レンズ系と、前記撮像レンズ系の前
面に同軸上に設けられ倍率を変換する補助レンズと、前
記撮像レンズ系の外周に沿って設けられ前記被写体を照
明する光を導く導光部材とを備えた観察用プローブにお
いて、前記補助レンズの外径を前記導光部材の外周の径
と等しくし、前記補助レンズを前記撮像レンズ系に対し
着脱自在に構成したことを特徴とする。In order to achieve the above object, the present invention according to the present invention provides an image pickup lens system for forming an image of a subject on a CCD and a front surface of the image pickup lens system. An auxiliary lens that is provided coaxially and converts magnification, and a light guide member that is provided along an outer periphery of the imaging lens system and guides light for illuminating the subject, and an outer diameter of the auxiliary lens. Is equal to the outer diameter of the light guide member, and the auxiliary lens is
It is characterized by being detachable .
【0008】また請求項2に記載の本考案は、撮像レン
ズ系と補助レンズとの間に絞りを設けたことを特徴とし
ている。According to a second aspect of the present invention, a stop is provided between the imaging lens system and the auxiliary lens.
【0009】[0009]
【作用】請求項1に記載のビデオ顕微鏡の観察用プロー
ブによれば、補助レンズの外径を撮像レンズ系の外周に
設けられた導光部材の外周の径と等しくしたので、導光
部材から発する光が補助レンズを通って被写体を十分に
照明することができる。According to the first aspect of the present invention, the outer diameter of the auxiliary lens is made equal to the outer diameter of the light guide member provided on the outer circumference of the imaging lens system. The emitted light can sufficiently illuminate the subject through the auxiliary lens.
【0010】また、請求項2に記載のビデオ顕微鏡の観
察用プローブによれば、撮像レンズ系と補助レンズとの
間に絞りを設けたので、光がほぼ光軸上を通り収差を少
くすることができ、レンズ系の焦点深度を深くすること
ができる。According to the second aspect of the present invention, since the stop is provided between the imaging lens system and the auxiliary lens, the light passes substantially on the optical axis and the aberration is reduced. And the depth of focus of the lens system can be increased.
【0011】[0011]
【実施例】以下、本考案のビデオ顕微鏡の観察用プロー
ブの一実施例を図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the observation probe of the video microscope of the present invention will be described below with reference to the drawings.
【0012】図1及び図2に本考案の一実施例の構成を
示す。これらの図において、図4に示す従来例の部分と
対応する部分には同一の符号を付してあり、その説明は
適宜省略する。本実施例の特徴は光ファイバ6を収納す
る観察用プローブの本体10の前面に、この本体10の外径
にほぼ等しい外径を有する補助レンズ2を設けた点にあ
る。またこの本体10内の中心に設けられた撮像レンズ系
1の前面と補助レンズ2との間には、図2に示す絞り5
が光軸上に設けられている。絞り5はリング11の中心に
3個の支柱12を介して支持されている。なお図1に示す
符号13はCCD4を収納するCCD組立体であり、符号
14はCCD4からの信号を外部に伝達する信号線であ
る。FIGS. 1 and 2 show the configuration of an embodiment of the present invention. In these figures, portions corresponding to those of the conventional example shown in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. This embodiment is characterized in that an auxiliary lens 2 having an outer diameter substantially equal to the outer diameter of the main body 10 is provided on the front surface of the main body 10 of the observation probe that houses the optical fiber 6. Further, between the front surface of the imaging lens system 1 provided at the center of the main body 10 and the auxiliary lens 2, a diaphragm 5 shown in FIG.
Are provided on the optical axis. The aperture 5 is supported at the center of the ring 11 via three columns 12. Reference numeral 13 shown in FIG. 1 is a CCD assembly that houses the CCD 4,
Reference numeral 14 denotes a signal line for transmitting a signal from the CCD 4 to the outside.
【0013】次に図3を参照して本実施例の作用を説明
する。図示しない光源から発した照明光は光ファイバ6
により前面側に導かれ、反射鏡7,8により反射されて
補助レンズ2に入射する。そして照明光は補助レンズ2
により光軸側に屈折して被写体3を照明する。このとき
被写体3の像は補助レンズ2により倍率が拡大されて撮
像レンズ系1に入射され、被写体3は補助レンズ2に近
接しているが、補助レンズ2が照明光を集光するために
十分に照明することができる。Next, the operation of this embodiment will be described with reference to FIG. Illumination light emitted from a light source (not shown)
, And is reflected by the reflecting mirrors 7 and 8 to enter the auxiliary lens 2. And the illumination light is the auxiliary lens 2
Illuminates the subject 3 by being refracted toward the optical axis. At this time, the image of the subject 3 is magnified by the auxiliary lens 2 and is incident on the imaging lens system 1. The subject 3 is close to the auxiliary lens 2, but is sufficient for the auxiliary lens 2 to collect the illumination light. Can be illuminated.
【0014】また補助レンズ2と撮像レンズ系1との光
軸上に絞り5が設けられているので、レンズ系の収差が
少なくなり、焦点深度も深くなる。このとき絞り5によ
って被写体3から撮像レンズ系1に入射する光量は減少
するが、被写体3は照明光によって十分に照明されてい
るので、この光量の減少を最小限に抑えることができ
る。Further, since the stop 5 is provided on the optical axis between the auxiliary lens 2 and the imaging lens system 1, the aberration of the lens system is reduced and the depth of focus is increased. At this time, the amount of light incident on the imaging lens system 1 from the subject 3 is reduced by the aperture 5, but since the subject 3 is sufficiently illuminated with the illumination light, the decrease in the amount of light can be minimized.
【0015】上記実施例で示した光ファイバ6の径及び
本数は一例を示したものであり、これらに限定されな
い。また図2に示す絞り5の支持構造もこれに限定され
ない。The diameter and the number of the optical fibers 6 shown in the above embodiment are merely examples, and are not limited thereto. Further, the support structure of the diaphragm 5 shown in FIG. 2 is not limited to this.
【0016】[0016]
【考案の効果】以上説明したように、請求項1に記載の
ビデオ顕微鏡の観察用プローブによれば、補助レンズの
外径を導光部材の外周の径と等しくしたので、補助レン
ズにより倍率を大きくした場合にも被写体を十分に照明
することができる。As described above, according to the observation probe of the video microscope according to the first aspect, the outer diameter of the auxiliary lens is made equal to the outer diameter of the light guide member. The subject can be sufficiently illuminated even when the size is increased.
【0017】また請求項2に記載のビデオ顕微鏡の観察
用プローブによれば、撮像レンズ系と補助レンズとの間
に絞りを設けたので、補助レンズの収差を少なくし焦点
深度を深くすることができる。According to the second aspect of the present invention, since the diaphragm is provided between the imaging lens system and the auxiliary lens, the aberration of the auxiliary lens can be reduced and the depth of focus can be increased. it can.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本考案のビデオ顕微鏡の観察用プローブの一実
施例の構成を示す説明図。FIG. 1 is an explanatory diagram showing a configuration of an embodiment of an observation probe of a video microscope of the present invention.
【図2】図1の絞りの構成を示す正面図。FIG. 2 is a front view showing the configuration of the stop shown in FIG. 1;
【図3】本実施例の作用を示す説明図。FIG. 3 is an explanatory diagram illustrating the operation of the present embodiment.
【図4】従来のビデオ顕微鏡の観察用プローブの一例の
構成を示す説明図。FIG. 4 is an explanatory diagram showing a configuration of an example of a conventional observation probe of a video microscope.
1 撮像レンズ系 2 補助レンズ 3 被写体 4 CCD(固
体撮像素子) 5 絞り 6 光ファイバ
(導光部材)REFERENCE SIGNS LIST 1 imaging lens system 2 auxiliary lens 3 subject 4 CCD (solid-state imaging device) 5 stop 6 optical fiber (light guide member)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−148718(JP,A) 特開 昭63−168614(JP,A) 特開 平2−59710(JP,A) 実開 平3−119814(JP,U) 実開 昭63−54118(JP,U) 実開 昭56−75909(JP,U) 特公 昭47−23224(JP,B1) (58)調査した分野(Int.Cl.6,DB名) G02B 21/00 - 21/36 G02B 23/24 - 23/26 A61B 1/00 - 1/32 H04N 5/222 - 5/257 G01N 21/84 - 21/91 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-148718 (JP, A) JP-A-63-168614 (JP, A) JP-A-2-59710 (JP, A) 119814 (JP, U) Shokai 63-54118 (JP, U) Shokai 56-75909 (JP, U) JP-B 47-23224 (JP, B1) (58) Fields investigated (Int. Cl. 6 , DB name) G02B 21/00-21/36 G02B 23/24-23/26 A61B 1/00-1/32 H04N 5/222-5/257 G01N 21/84-21/91
Claims (2)
撮像レンズ系と、前記撮像レンズ系の前面に同軸上に設
けられ倍率を変換する補助レンズと、前記撮像レンズ系
の外周に沿って設けられ前記被写体を照明する光を導く
導光部材とを備えた観察用プローブにおいて、前記補助
レンズの外径を前記導光部材の外周の径と等しくし、前
記補助レンズを前記撮像レンズ系に対し着脱自在に構成
した、ことを特徴とするビデオ顕微鏡の観察用プロー
ブ。1. An imaging lens system for forming an image of a subject on a solid-state imaging device, an auxiliary lens provided coaxially on a front surface of the imaging lens system for converting magnification, and an outer periphery of the imaging lens system. illuminating the subject is provided Te in the observation probe that includes a light guide member for guiding light, the outer diameter of the auxiliary lens equal to the diameter of the outer circumference of the light guide member, before
The auxiliary lens is detachably attached to the imaging lens system.
The video microscope observation probe, characterized in that.
を設けたことを特徴とする請求項1に記載のビデオ顕微
鏡の観察用プローブ。2. The observation probe for a video microscope according to claim 1, wherein an aperture is provided between the imaging lens system and the auxiliary lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992037198U JP2591735Y2 (en) | 1992-06-02 | 1992-06-02 | Video microscope observation probe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992037198U JP2591735Y2 (en) | 1992-06-02 | 1992-06-02 | Video microscope observation probe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0596817U JPH0596817U (en) | 1993-12-27 |
JP2591735Y2 true JP2591735Y2 (en) | 1999-03-10 |
Family
ID=12490881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992037198U Expired - Fee Related JP2591735Y2 (en) | 1992-06-02 | 1992-06-02 | Video microscope observation probe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2591735Y2 (en) |
-
1992
- 1992-06-02 JP JP1992037198U patent/JP2591735Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0596817U (en) | 1993-12-27 |
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Legal Events
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Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981117 |
|
LAPS | Cancellation because of no payment of annual fees |