JP2013037306A - Lens device - Google Patents
Lens device Download PDFInfo
- Publication number
- JP2013037306A JP2013037306A JP2011175504A JP2011175504A JP2013037306A JP 2013037306 A JP2013037306 A JP 2013037306A JP 2011175504 A JP2011175504 A JP 2011175504A JP 2011175504 A JP2011175504 A JP 2011175504A JP 2013037306 A JP2013037306 A JP 2013037306A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- eccentric
- fitted
- roller members
- lens
- 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.)
- Withdrawn
Links
Landscapes
- Lens Barrels (AREA)
Abstract
Description
本発明は、レンズ鏡筒と固定筒を複数種類のコロ部材で結合するレンズ装置に関し、特に複数種類のコロの誤組み防止に関するものである。 The present invention relates to a lens apparatus that couples a lens barrel and a fixed cylinder with a plurality of types of roller members, and particularly relates to prevention of misassembly of a plurality of types of rollers.
従来、複数のレンズ群で構成されたレンズ光学系を有するレンズ装置では、レンズ単体やレンズ鏡筒内の部品精度のばらつきにより各レンズ群が光軸に対し傾く、光軸に対して平行偏芯を持つといった光学性能への劣化要素を持っていた。これらの劣化要素を調整する手法として予てより、レンズ群を保持するレンズ鏡筒とこのレンズ保持部材を支持する固定筒との間において、レンズ鏡筒が固定筒に対して移動可能となるように設定するものがある。この機構によりレンズ群の光軸に対する傾きや平行偏芯等を調整することができる。 Conventionally, in a lens apparatus having a lens optical system composed of a plurality of lens groups, each lens group is inclined with respect to the optical axis due to variations in accuracy of components within the lens alone or the lens barrel, and is decentered parallel to the optical axis. It had a deterioration factor to the optical performance such as having. As a method of adjusting these deterioration factors, the lens barrel is movable with respect to the fixed barrel between the lens barrel holding the lens group and the fixed barrel supporting the lens holding member. There is something to set. By this mechanism, the inclination of the lens group with respect to the optical axis, parallel eccentricity, and the like can be adjusted.
例えば、特許文献１では光軸方向に傾けられたキー溝を有する固定筒の内側に、この固定筒に対し回動するカム筒によって光軸方向にカム駆動されるレンズ鏡筒を設ける。レンズ鏡筒には偏芯コロが光軸直行方向に三つ設けられており、偏芯コロの非偏芯部がカム筒に設けられたカム溝へと嵌っている。また、偏芯コロの偏芯部は固定筒に設けられたキー溝へと嵌合している。そしてこれらの構造により偏芯コロを回転させることにより、レンズ鏡筒の光軸の傾きを調整することができる手法が開示されている。 For example, in Patent Document 1, a lens barrel that is cam-driven in the optical axis direction by a cam cylinder that rotates with respect to the fixed cylinder is provided inside a fixed cylinder having a key groove that is inclined in the optical axis direction. The lens barrel is provided with three eccentric rollers in the direction perpendicular to the optical axis, and the non-eccentric portion of the eccentric roller is fitted into a cam groove provided in the cam barrel. Further, the eccentric portion of the eccentric roller is fitted into a key groove provided in the fixed cylinder. And the method which can adjust the inclination of the optical axis of a lens barrel is disclosed by rotating an eccentric roller by these structures.
上述の特許文献に開示された従来技術のような手法により、光軸に対しての傾き等を調整することができる。しかしながら近年の光学性能高精度化により、一つのレンズ鏡筒に対し光軸に対する傾きだけでなく光軸に対しての平行偏芯を調整するといった二種類の調整構造を行うことが求められるようになっている。これら二種類の調整は必要な調整量が異なる場合、異なる種類の偏芯コロで調整を行うこととなる。そうすると組み間違えが発生してしまう懸念がある。 The inclination with respect to the optical axis and the like can be adjusted by a technique such as the conventional technique disclosed in the above-mentioned patent document. However, due to the recent increase in accuracy of optical performance, it is required to perform two types of adjustment structures such as adjusting not only the inclination with respect to the optical axis but also the parallel eccentricity with respect to the optical axis for one lens barrel. It has become. When these two types of adjustments require different adjustment amounts, adjustments are made with different types of eccentric rollers. If so, there is a concern that a wrong combination will occur.
そこで、本発明の目的は、二種類の調整を一つのレンズ鏡筒に対し行う場合でも組み間違えの発生を防止することを可能にしたレンズ装置を提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a lens apparatus that can prevent the occurrence of a wrong combination even when two types of adjustments are performed on one lens barrel.
上記目的を達成するために、本発明は第一のコロ部材と第二のコロ部材と、第一のコロ部材が嵌合する嵌合穴と、第二のコロ部材が嵌合する嵌合穴とを有する第一の筒部材と、第一のコロ部材が植接される嵌合穴と、前記、第二のコロ部材が植接される嵌合穴とを有する第二の筒部材と、を有する構成において、第一の筒部材と第二の筒部材が第一のコロ部材と第二のコロ部材により固定され、第一の筒部材の第一のコロ部材が嵌合する嵌合穴は、第二のコロ部材が嵌合する嵌合穴より小さく、前記、第二の筒部材の第一のコロ部材が植接する嵌合穴は、第二のコロ部材が植接する嵌合穴より大きいことを特徴とする。 To achieve the above object, the present invention provides a first roller member, a second roller member, a fitting hole into which the first roller member is fitted, and a fitting hole into which the second roller member is fitted. A second tubular member having a first cylindrical member having a fitting hole in which the first roller member is planted, and a fitting hole in which the second roller member is implanted. The first cylindrical member and the second cylindrical member are fixed by the first roller member and the second roller member, and the fitting hole into which the first roller member of the first cylindrical member is fitted. Is smaller than the fitting hole in which the second roller member is fitted, and the fitting hole in which the first roller member of the second cylindrical member is planted is larger than the fitting hole in which the second roller member is planted. It is large.
本発明によれば二種類のコロを一つのレンズ鏡筒に設ける場合でも組み間違えの発生を防止することを可能にしたレンズ装置を提供することができる。 According to the present invention, it is possible to provide a lens device that can prevent the occurrence of wrong assembly even when two types of rollers are provided in one lens barrel.
以下に、本発明の好ましい実施の形態を、図１〜図５に基づいて詳細に説明する。 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS.
［実施例］
図１は本発明のレンズ装置における光軸方向の断面図となっている。図２は偏芯コロ箇所の光軸に垂直な断面図となっている。また、図３は図２の偏芯コロ箇所拡大の図となっている。図４は偏芯コロ箇所側面の拡大図となっている。図５は二種類の偏芯コロの単独図となっている。
[Example]
FIG. 1 is a cross-sectional view in the optical axis direction of the lens apparatus of the present invention. FIG. 2 is a cross-sectional view perpendicular to the optical axis of the eccentric roller portion. FIG. 3 is an enlarged view of the eccentric roller portion of FIG. FIG. 4 is an enlarged view of the side surface of the eccentric roller portion. FIG. 5 is a single view of two types of eccentric rollers.
レンズ１、レンズ２はレンズ鏡筒３により保持されており、レンズ鏡筒３にはコロ座穴３a、３bが光軸周り等分に三つ設けられている。第一偏芯コロ部材５は非偏芯径５aがコロ座穴３aに嵌合し、ビス６により光軸周り等分に三つレンズ鏡筒３に植接されている。第二偏芯コロ部材７は非偏芯径７aがコロ座穴３bに嵌合しビス８により光軸周り等分に三つレンズ鏡筒３に植接されている。４は固定筒であり、周方向に延びた長穴４a、光軸方向に延びた長穴４bが設けられている。そして、図４に示されているように、第一偏芯コロ５の偏芯径５bが長穴４aに光軸方向で径合しており、第二偏芯コロ７の偏芯径７bが長穴４bに周方向で径合している。このようにして、レンズ鏡筒３と固定筒４は、第一偏芯コロ５により光軸方向が、第二偏芯コロ７により周方向が径合されることにより一体化される構造となっている。 The lens 1 and the lens 2 are held by a lens barrel 3, and the lens barrel 3 is provided with three roller seat holes 3a and 3b that are equally divided around the optical axis. The first eccentric roller member 5 has a non-eccentric diameter 5a fitted in the roller seat hole 3a, and is screwed into the three-lens barrel 3 equally by the screw 6 around the optical axis. The second eccentric roller member 7 has a non-eccentric diameter 7 a fitted into the roller seat hole 3 b and is screwed into the three-lens barrel 3 equally by the screw 8 around the optical axis. Reference numeral 4 denotes a fixed cylinder, which is provided with a long hole 4a extending in the circumferential direction and a long hole 4b extending in the optical axis direction. As shown in FIG. 4, the eccentric diameter 5b of the first eccentric roller 5 is fitted in the elongated hole 4a in the optical axis direction, and the eccentric diameter 7b of the second eccentric roller 7 is The long hole 4b is fitted in the circumferential direction. In this way, the lens barrel 3 and the fixed barrel 4 have a structure in which the optical axis direction is integrated by the first eccentric roller 5 and the circumferential direction is integrated by the second eccentric roller 7. ing.
第一偏芯コロ５を用いた光学調整の方法について説明する。第一偏芯コロ５のスリワリ５cに不図示の工具を嵌め、工具を回転させる。そうすることで、第一偏芯コロ５は偏芯径５bが固定筒４の４aに光軸方向で径合、非偏芯径５aがレンズ鏡筒３のコロ座穴３aに全周嵌合しているので、固定筒４に対し、レンズ鏡筒３を傾ける調整が可能となる。また、第二偏芯コロ７の偏芯径７bが径合する固定筒４の長穴４bは光軸方向に延びた形状であるので第一偏芯コロ５による調整により拗れることはない。 An optical adjustment method using the first eccentric roller 5 will be described. A tool (not shown) is fitted in the slot 5c of the first eccentric roller 5, and the tool is rotated. By doing so, the eccentric diameter 5b of the first eccentric roller 5 is fitted to 4a of the fixed cylinder 4 in the optical axis direction, and the non-eccentric diameter 5a is fitted to the roller seat hole 3a of the lens barrel 3 all around. Therefore, the lens barrel 3 can be adjusted to be inclined with respect to the fixed barrel 4. Further, since the elongated hole 4b of the fixed cylinder 4 in which the eccentric diameter 7b of the second eccentric roller 7 is fitted has a shape extending in the optical axis direction, it will not be bent by the adjustment by the first eccentric roller 5.
次に第二偏芯コロ７を用いた光学調整の方法について説明する。第二偏芯コロ７のスリワリ７cに不図示の工具を嵌め、工具を回転させる。そうすることで、第二偏芯コロ７は偏芯径７bが固定筒４の長穴４bに周方向で径合、非偏芯径７aがレンズ鏡筒３のコロ座穴３bに全周嵌合していので、固定筒４に対しレンズ鏡筒３を平行偏芯する調整が可能となる。また、第一偏芯コロ５の偏芯径５bが径合する固定筒４の長穴４aは周方向に延びた形状であるので第二偏芯コロ７による調整により拗れることはない。なお、レンズ鏡筒３と固定筒４は前述の調整により干渉しないよう調整量以上の十分なクリアランスが設けられている。本実施例レンズ装置の第一偏芯コロ５、第二偏芯コロ７は必要調整量が異なる構成となっている。その場合、必要調整量が大きい方に合わせ同じコロを使用するという構成も考えられるが、角度当たりの調整量が敏感になることや、過大に偏芯コロを回転させてしまうといった問題点があり好ましくない。 Next, an optical adjustment method using the second eccentric roller 7 will be described. A tool (not shown) is fitted in the slot 7c of the second eccentric roller 7, and the tool is rotated. By doing so, the eccentric diameter 7b of the second eccentric roller 7 is fitted in the elongated hole 4b of the fixed cylinder 4 in the circumferential direction, and the non-eccentric diameter 7a is fitted into the roller seat hole 3b of the lens barrel 3 all around. Therefore, the lens barrel 3 can be adjusted to be decentered parallel to the fixed barrel 4. Further, since the elongated hole 4a of the fixed cylinder 4 where the eccentric diameter 5b of the first eccentric roller 5 is fitted has a shape extending in the circumferential direction, it is not bent by the adjustment by the second eccentric roller 7. The lens barrel 3 and the fixed barrel 4 are provided with a sufficient clearance more than the adjustment amount so as not to interfere with the adjustment described above. The first eccentric roller 5 and the second eccentric roller 7 of the lens device of the present embodiment have different required adjustment amounts. In that case, it is possible to use the same roller according to the larger required adjustment amount, but there are problems that the adjustment amount per angle becomes sensitive and the eccentric roller rotates excessively. It is not preferable.
次に本発明の特徴である、コロの誤組防止構造について説明する。 Next, a roller misassembly prevention structure, which is a feature of the present invention, will be described.
図５は本発明の特徴である二種類のコロの単独図となっている。前述のように第一偏芯コロ５は非偏芯径５a、偏芯径５bが設けられており偏芯径５bは非偏芯径５aに対して偏芯している。第二偏芯コロ７は非偏芯径７a、偏芯径７bが設けられており偏芯径７bは非偏芯径７aに対して偏芯している。 FIG. 5 is a single view of the two types of rollers that characterize the present invention. As described above, the first eccentric roller 5 is provided with the non-eccentric diameter 5a and the eccentric diameter 5b, and the eccentric diameter 5b is eccentric with respect to the non-eccentric diameter 5a. The second eccentric roller 7 is provided with a non-eccentric diameter 7a and an eccentric diameter 7b, and the eccentric diameter 7b is eccentric with respect to the non-eccentric diameter 7a.
第一偏芯コロ５の偏芯径５a、第二偏芯コロ７の非偏芯径７aの関係は非偏芯径５aの方が大きくなっている。また、第一偏芯コロ５の偏芯径５b、第二偏芯コロの偏芯径７bの関係は偏芯径５bの方が小さくされている。第一偏芯コロ５の非偏芯径５a、第二偏芯コロ７の非偏芯径７aが嵌るレンズ鏡筒３のコロ座穴３a、第一偏芯コロ５の偏芯径５b、第二偏芯コロ７の偏芯径７bが嵌る固定筒４の長穴４a、長穴４bも同様の関係となっている。前述の関係とすることで第一偏芯コロ５、第二偏芯コロ７を逆に組もうとしてしまった場合、第一偏芯コロ５の５aはレンズ鏡筒３の３bと干渉し、第二偏芯コロ７の７bは固定筒４の４aと干渉する。よって、異なる箇所に偏芯コロを組んでしまい不良製品を出のを防ぐことができる。なお、第一偏芯コロ５と第二偏芯コロ７の径の関係は逆であってもかまわない。 Regarding the relationship between the eccentric diameter 5a of the first eccentric roller 5 and the non-eccentric diameter 7a of the second eccentric roller 7, the non-eccentric diameter 5a is larger. The eccentric diameter 5b of the first eccentric roller 5 and the eccentric diameter 7b of the second eccentric roller 5 are smaller. The first eccentric roller 5 has a non-eccentric diameter 5a, the second eccentric roller 7 has a non-eccentric diameter 7a, a roller seat hole 3a of the lens barrel 3, the first eccentric roller 5 has an eccentric diameter 5b, The long hole 4a and the long hole 4b of the fixed cylinder 4 into which the eccentric diameter 7b of the double eccentric roller 7 is fitted have the same relationship. If the first eccentric roller 5 and the second eccentric roller 7 are to be assembled in the reverse relationship, 5a of the first eccentric roller 5 interferes with 3b of the lens barrel 3, and 7 b of the double eccentric roller 7 interferes with 4 a of the fixed cylinder 4. Therefore, it is possible to prevent the defective product from being produced by assembling eccentric rollers at different locations. The diameter relationship between the first eccentric roller 5 and the second eccentric roller 7 may be reversed.
以上、本発明の好ましい実施形態について説明したが、本発明はこれらの実施形態に限定されず、その要旨の範囲内で種々の変形及び変更が可能である。 As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.
３ レンズ鏡筒
３a 第一偏芯コロのコロ座
３b 第二偏芯コロのコロ座
４ 固定筒
４a 第一偏芯コロの径合長穴
４b 第二偏芯コロの径合長穴
５ 第一偏芯コロ
５a 第一偏芯コロの非偏芯部
５b 第一偏芯コロの偏芯部
７ 第二偏芯コロ
７a 第二偏芯コロの非偏芯部
７b 第二偏芯コロの偏芯部
3 Lens barrel 3a First eccentric roller roller seat 3b Second eccentric roller roller seat 4 Fixed tube 4a First eccentric roller diameter slot 4b Second eccentric roller diameter slot 5 First Eccentric roller 5a First eccentric roller non-eccentric portion 5b First eccentric roller eccentric portion 7 Second eccentric roller 7a Second eccentric roller non-eccentric portion 7b Second eccentric roller eccentric Part
Claims (2)
第一のコロ部材と、
第二のコロ部材と、
前記、第一のコロ部材が嵌合する嵌合穴と、前記、第二のコロ部材が嵌合する嵌合穴とを有する第一の筒部材と、
前記、第一のコロ部材が植接される嵌合穴と、前記、第二のコロ部材が植接される嵌合穴とを有する第二の筒部材とを有する構成において、
前記、第一の筒部材と前記、第二の筒部材が前記第一のコロ部材と前記第二のコロ部材により固定され、
前記、第一の筒部材の第一のコロ部材が嵌合する嵌合穴は、第二のコロ部材が嵌合する嵌合穴より小さく、
前記、第二の筒部材の第一のコロ部材が植接する嵌合穴は、第二のコロ部材が植接する嵌合穴より大きい
ことを特徴とするレンズ装置。 A first roller member and a first roller member;
A second roller member;
A first tube member having a fitting hole into which the first roller member is fitted, and a fitting hole into which the second roller member is fitted;
In the configuration having a fitting hole in which the first roller member is planted and a second cylindrical member having the fitting hole in which the second roller member is planted,
The first cylinder member and the second cylinder member are fixed by the first roller member and the second roller member,
The fitting hole into which the first roller member of the first cylindrical member is fitted is smaller than the fitting hole into which the second roller member is fitted,
The fitting hole in which the first roller member of the second cylindrical member is planted is larger than the fitting hole in which the second roller member is planted.
A lens device.
前記第二の筒部材は、
前記第一のコロ部材と前記第二のコロ部材により、
光軸方向と光軸周り方向を規制されていることを特徴とする請求項１に記載のレンズ装置。
The first tubular member;
The second cylindrical member is
By the first roller member and the second roller member,
The lens apparatus according to claim 1, wherein an optical axis direction and a direction around the optical axis are restricted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011175504A JP2013037306A (en) | 2011-08-11 | 2011-08-11 | Lens device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011175504A JP2013037306A (en) | 2011-08-11 | 2011-08-11 | Lens device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2013037306A true JP2013037306A (en) | 2013-02-21 |
Family
ID=47886936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011175504A Withdrawn JP2013037306A (en) | 2011-08-11 | 2011-08-11 | Lens device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2013037306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10139584B2 (en) | 2014-02-21 | 2018-11-27 | Canon Kabushiki Kaisha | Lens apparatus and optical apparatus |
-
2011
- 2011-08-11 JP JP2011175504A patent/JP2013037306A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10139584B2 (en) | 2014-02-21 | 2018-11-27 | Canon Kabushiki Kaisha | Lens apparatus and optical apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109239881B (en) | Flexible supporting device for supporting large-caliber lens and large-caliber lens assembly | |
| JP2018510385A (en) | Optical assembly having a translatable and centered sleeve | |
| JP2011154306A (en) | Lens apparatus for surveillance camera | |
| EP2369390B1 (en) | Objective and assembling method for the same | |
| JP5012861B2 (en) | Optical apparatus and optical apparatus | |
| JP2013037306A (en) | Lens device | |
| JPWO2019044150A1 (en) | Lens barrel and cam follower | |
| WO2012128203A1 (en) | Lens device | |
| JP2007286173A (en) | Objective lens | |
| JP2006064177A (en) | Rolling bearing arrangement structure and pressurized mechanism of pressurized machine provided with the same | |
| JP2010282020A (en) | Frame member and optical device | |
| JP2006072059A (en) | Eccentricity adjusting apparatus for lens barrel | |
| JP2007003581A (en) | Lens barrel | |
| JP4900188B2 (en) | Lens barrel and optical apparatus including the same | |
| JP2016157041A (en) | Lens holding means | |
| JP2013231889A (en) | Optical element holding device | |
| JP7304514B2 (en) | Stepped eccentric roller, lens barrel, and shift adjustment method for lens barrel | |
| JP5599052B2 (en) | Optical device | |
| EP3351979B1 (en) | Reflecting mirror and mirror holding mechanism | |
| JP5927046B2 (en) | Objective lens | |
| JP4518630B2 (en) | Lens barrel | |
| JP2000266978A (en) | Holding construction of lens-barrel and photographing lens provided therewith | |
| JP2024024447A (en) | lens barrel | |
| CN112198615B (en) | Multi-lens centering device and method | |
| US8233226B2 (en) | Construction of objective |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20141104 |