JPS5984208A - Focusing apparatus for optical system - Google Patents
Focusing apparatus for optical systemInfo
- Publication number
- JPS5984208A JPS5984208A JP18094283A JP18094283A JPS5984208A JP S5984208 A JPS5984208 A JP S5984208A JP 18094283 A JP18094283 A JP 18094283A JP 18094283 A JP18094283 A JP 18094283A JP S5984208 A JPS5984208 A JP S5984208A
- Authority
- JP
- Japan
- Prior art keywords
- guide
- guide tube
- lens barrel
- optical system
- piece
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、光学系の焦点を合わせる為、１つの案内管と
、該案内管の内面又は外面を案内され、少なくとも光学
系の一部を保持している鏡胴とを有し、案内管とｔｖ１
川とは直線運動に変換される回軸運動により相互に変位
させられる、光学系の焦点を合わせる装置に関する。DETAILED DESCRIPTION OF THE INVENTION In order to focus an optical system, the present invention includes a guide tube, a lens barrel guided on the inner or outer surface of the guide tube, and holding at least a part of the optical system. has a guide tube and tv1
River refers to a focusing device of an optical system that is mutually displaced by a rotational movement that is converted into a linear movement.
このため光学系を、専門家にとって「ヘリコイドねし鏡
胴」の概念で周知の装置に組み込むことが知られており
、該装置では案内管および鏡胴が対応するピッチを有す
る多条の梯形ねし又は三角ねしにより相互に作動結合し
そして手動又はモーターによって相互に運動させられる
ことが可能になっている。For this purpose, it is known to integrate the optical system into a device known to experts under the concept of a "helicoidal barrel", in which the guide tube and the barrel are arranged in the form of a multi-striped trapezoid with a corresponding pitch. They are operatively connected to each other by a triangular screw or triangular screw and can be moved relative to each other manually or by motor.
上記した装置は、案内管と鏡胴との間に大なる滑り摩擦
があり、相互の変位が行われる際、該摩＃がを克服する
ために大なるエネルギー消費が必要であり、更に大なる
相対開口を有する光学系及び長い焦点距離を有する光学
系の大なる重量により、上記摩擦を増大させる傾きが変
位させるねじの間に発生するのが欠点である。The above-mentioned device has a large sliding friction between the guide tube and the lens barrel, and when mutual displacement is performed, a large amount of energy is required to overcome this friction. Due to the large weight of optics with relative apertures and optics with long focal lengths, it is a disadvantage that tilts occur between the displacing screws, increasing the friction mentioned above.
本発明の目的は、容易に運動可能であるけれどもあらゆ
る位置において粘着して離れる様な効果（ステインク・
スリップ効果”５ｔｉｃｋ−ｓｌｉｐ”−Ｅｆｆｅｋｔ
）をあられさす、遊隙が非常に少なく確実な機能を有す
る、光学系の焦点を合わせろ装置を創成することである
。The object of the present invention is to create an effect that is easily movable but sticks away at any position (stain).
Slip effect "5tick-slip"-Effekt
The object of the present invention is to create a focusing device for an optical system that has very little play and has a reliable function.
１〜記の目的は胃口ａに述べた種ｆｎの装置において次
の様にして達成される。即ち案内管はそれの回転軸に平
行に延在している案内溝を少なくとも備えていること、
案内管ヒには、内周面にｇ旋状で回転軸のまわりを取り
巻いている輪郭断面溝を有する回転可能な調節リングが
軸方向に移動不可能に支承されていること及び鏡胴には
案内溝に嵌る少なくとも１つの案内片と、輪郭断面溝と
作動結合する少なく点も１つの滑動片が取付りられてい
ることにより達成される。The objects 1 to 1 are achieved in the device of the type fn described in section a in the following manner. That is, the guide tube is provided with at least a guide groove extending parallel to its axis of rotation;
A rotatable adjusting ring having a contoured groove in the inner circumferential surface surrounding the axis of rotation is mounted on the guide tube in an axially immovable manner, and the lens barrel is provided with a This is achieved in that at least one guide piece, which fits into the guide groove, and at least one sliding piece, which is operatively connected to the contour groove, are attached.
本発明のト記とは別の特徴ある形成は実施態様用の対象
になっている。Other characteristic features of the invention are the subject of embodiments.
添付図において本発明は一つの実施例を示すｍ６図によ
り示され、次の記述において詳細に説明される。In the accompanying drawings, the invention is illustrated by a m6 diagram showing one embodiment and is explained in detail in the following description.
第１図には略図により案内管１が示されており、該案内
管は後端にあるハヨネソｌ−２により、図示されていな
いカメラにねじって取付けられろ。案内管１はそれの軸
３に平行に延在する案内溝４を備えている。FIG. 1 schematically shows a guide tube 1, which can be twisted and attached to a camera, not shown, by means of a screw l-2 at the rear end. The guide tube 1 is provided with a guide groove 4 extending parallel to its axis 3.
案内管ｌ上には調節リング５が配置されている。An adjusting ring 5 is arranged on the guide tube l.
この調節リングは軸方向に移動不可能であるが、案内管
Ｉのまわりに回転することが可能である。This adjustment ring is not axially movable, but can be rotated around the guide tube I.
調節リングの内周面６にはねじの形態で軸３のまわりを
コイル状に取り巻いている輪郭断面溝７が切り込まれて
いる。A contoured groove 7 is cut into the inner circumferential surface 6 of the adjusting ring, which coils around the shaft 3 in the form of a thread.
案内管１の内部には遊隙を介して鏡胴８が支承され、そ
の内部には光学系の少なくとも一部のレンズ９を含んで
いる。A lens barrel 8 is supported inside the guide tube 1 with a clearance, and the inside thereof includes at least a part of a lens 9 of an optical system.
光学系の焦点を合わせる間、鏡胴８が直線状に導かれる
ため、鏡胴には案内片１０が取付けられ、この案内片は
案内ｉ４に嵌合する。Since the lens barrel 8 is guided in a straight line during focusing of the optical system, a guide piece 10 is attached to the lens barrel, and this guide piece fits into the guide i4.
案内片１０上には滑動片１１が配置されており、この滑
動片４士輪郭断面溝７に嵌りそして調節リング５を回転
する際該溝の中で滑動する。輪郭断面溝７がねじの形態
でコイル状になっていることと鏡胴８上に取付けられて
いる案内片ＩＯが嵌合していることにより、鏡胴Ｂは、
軸方向に移動不可５−
能に支承されている調節リング５が回転する時、直線運
動を行う様に強制される。Sliding pieces 11 are arranged on the guide piece 10 and fit into the contour grooves 7 in which they slide when the adjusting ring 5 is rotated. Due to the fact that the profile cross-sectional groove 7 is coiled in the form of a screw and the guide piece IO attached to the lens barrel 8 is fitted, the lens barrel B has the following features:
When the axially non-moveable adjusting ring 5 rotates, it is forced to perform a linear movement.
運動状態を改善するため、第２図に示した様に３本の案
内溝４が設けられ、これらの溝に３間の案内片１０が嵌
っている。この時３個の滑動片１１も存在しており、こ
れらの滑動片は輪郭断面溝７に嵌っている。この際次の
ことに注意しなし」ればならない。即ち、案内片１０お
よびｉ％勤枠片１１鏡胴の周囲に分布している状態に従
って、案内溝４、案内片１０および滑動片１１は、輪郭
断面溝７の歩みの量（傾斜の量）だけ相互にずらされて
いなければならない。In order to improve the movement conditions, three guide grooves 4 are provided as shown in FIG. 2, and three guide pieces 10 are fitted into these grooves. Three sliding pieces 11 are also present at this time, and these sliding pieces fit into the contoured grooves 7. At this time, the following must be noted. That is, according to the state in which the guide piece 10 and the i% shift frame piece 11 are distributed around the lens barrel, the guide groove 4, the guide piece 10, and the sliding piece 11 adjust the amount of step (amount of inclination) of the contour cross-sectional groove 7. must be offset from each other by only
特に有利な形成では、第３図に示されているように、案
内溝４は１２０°だけずらされている。In a particularly advantageous embodiment, as shown in FIG. 3, the guide grooves 4 are offset by 120 DEG.
第１図は案内管と鏡胴との間の案内原理を断面図にて示
し、第２および３図は、案内片の分布配置の例を、特許
請求の範囲第２項の実施例ζこ従って示したものである
。
■・・・案内管 ３・・・軸６−
４・・・案内溝 ５・・・調節リング６・・
・内周面 ７・・・輪郭断面溝８・・・鏡胴
１０・・・案内片１１・・・滑動片
７−FIG. 1 shows the guiding principle between the guide tube and the lens barrel in a sectional view, and FIGS. 2 and 3 show an example of the distribution arrangement of the guide pieces. Therefore, it is shown. ■... Guide tube 3... Shaft 6- 4... Guide groove 5... Adjustment ring 6...
・Inner peripheral surface 7... Contour cross-section groove 8... Lens barrel 10... Guide piece 11... Sliding piece 7-
Claims (4)
され、少なくとも光学系の一部を保持している鏡胴とを
有し、光学系の焦点を合わせるために案内管と鏡胴とは
直線運動に変換される回転運動により相互に変位させら
れる、光学系の焦点を合わせる装置において、案内管（
１）はそれの回転軸（３）に平行に延在している少なく
とも１つの案内溝（４）を備えていることと、案内管（
１）上には、内周面（６）に頓旋状に回転軸（３）の周
りを取巻いている輪郭断面ａ（７）を有する回転可能な
調節リング（５）が軸方向に移動不可能に支承されてい
ることと、鏡胴（８）には案内溝（４）に嵌る少なくと
も１つの案内片（１０）と、輪郭断面溝（７）と作動結
合する少なくとも１つの滑動片（１１）が取付けられて
いることを特徴とする装置。(1) It has one guide tube and a lens barrel that is guided on the inner or outer surface of the guide tube and holds at least a part of the optical system, and the guide tube and mirror are used to focus the optical system. The barrel is a guide tube (
1) is provided with at least one guide groove (4) extending parallel to its axis of rotation (3) and that the guide tube (
1) On top, a rotatable adjusting ring (5) with a contour cross-section a (7) that wraps around the axis of rotation (3) in a convoluted manner on the inner circumferential surface (6) is axially movable; The lens barrel (8) has at least one guide piece (10) that fits in the guide groove (4) and at least one sliding piece (10) that is operatively connected to the contour groove (7). 11) is attached.
方向においては調節リング（５）の輪郭断面溝（７）の
伸斜の量だけ相互にずらされている若干間の案内溝（４
）を備え、そして鏡胴（８）はこれらの案内溝（４）に
夫々嵌っている案内片（１０）と滑動片（１］）とを有
していることを特徴とする特許請求の範囲第１項記載の
装置。(2) The guide tubes (1) are distributed around the circumference of the guide tubes (1) 2 and are arranged in a number of spaces 2 which are offset from each other in the axial direction by the amount of dilatation of the contour grooves (7) of the adjusting ring (5). Guide groove (4
), and the lens barrel (8) has a guide piece (10) and a sliding piece (1]) fitted in these guide grooves (4), respectively. The device according to paragraph 1.
より少なくとも一部分が覆われでいることを特徴とする
特許請求の範囲第１項才たけ第２項のいずれか１つに記
載の装置。3. Device according to claim 1, characterized in that the sliding piece (11) is at least partially covered with a friction-reducing material.
れていることを特徴とする特許請求の範囲第１項から第
３項までのうちのいずれか一つに記載の装置。4. Device according to claim 1, characterized in that the sliding piece (11) is made of a friction-reducing material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823236562 DE3236562A1 (en) | 1982-10-02 | 1982-10-02 | Device for focusing an optical system |
| DE32365624 | 1982-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5984208A true JPS5984208A (en) | 1984-05-15 |
Family
ID=6174794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18094283A Pending JPS5984208A (en) | 1982-10-02 | 1983-09-30 | Focusing apparatus for optical system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5984208A (en) |
| DE (1) | DE3236562A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2229016B (en) * | 1989-03-09 | 1993-07-07 | Asahi Optical Co Ltd | Cam ring of lens barrel and method for manufacturing the same |
| US6628458B1 (en) * | 1997-07-14 | 2003-09-30 | Brock Optical, Inc. | Microscope with improved camera mount and illumination system |
-
1982
- 1982-10-02 DE DE19823236562 patent/DE3236562A1/en not_active Withdrawn
-
1983
- 1983-09-30 JP JP18094283A patent/JPS5984208A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3236562A1 (en) | 1984-04-05 |
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