JPS6410051B2 - - Google Patents
Info
- Publication number
- JPS6410051B2 JPS6410051B2 JP12378582A JP12378582A JPS6410051B2 JP S6410051 B2 JPS6410051 B2 JP S6410051B2 JP 12378582 A JP12378582 A JP 12378582A JP 12378582 A JP12378582 A JP 12378582A JP S6410051 B2 JPS6410051 B2 JP S6410051B2
- Authority
- JP
- Japan
- Prior art keywords
- photographing optical
- optical system
- lens barrel
- sub
- main
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 56
- 239000004606 Fillers/Extenders Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Focusing (AREA)
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Automatic Focus Adjustment (AREA)
Description
【発明の詳細な説明】
本発明は、主撮影光学系としての主レンズ系と
副撮影光学系の副レンズ系とを有するレンズ鏡筒
が撮影光軸上を前後に移動することにより副レン
ズ系を撮影光軸上に出入りさせて少なくとも２種
類以上の焦点距離に切換え可能な可変焦点カメラ
における撮影光学系の基準ピント出しの調整機構
に関する。DETAILED DESCRIPTION OF THE INVENTION In the present invention, a lens barrel having a main lens system as a main photographing optical system and a sub lens system as a sub photographing optical system moves back and forth on the photographing optical axis, thereby forming a sub lens system. The present invention relates to a reference focusing adjustment mechanism of a photographing optical system in a variable focus camera that can switch to at least two or more types of focal lengths by moving the lens into and out of the photographing optical axis.
一眼レフを除くカメラ、特に35mm判のレンズシ
ヤツタ付きカメラにおいては、一般に35〜40mmの
焦点距離をもつ撮影レンズを使用しているが、撮
影には、被写体の条件に応じて撮影画角に合つた
焦点距離のレンズを使用することが合理的であ
る。そこで、このような機能を満たすカメラとし
て、カメラ内部に主レンズ系以外に、さらに副レ
ンズ系を設けて主レンズ系の移動に伴つて副レン
ズ系が必要に応じて撮影光軸上に出入りするよう
にして、主レンズ系のみの一般撮影並びに主レン
ズ系と副レンズ系との合成された光学系による撮
影というように相異なつた焦点距離での撮影がで
きるようにしたカメラが、特開昭52−76919号、
特開昭54−33027号などで種々提案されている。 Cameras other than single-lens reflex cameras, especially 35mm cameras with lens shutters, generally use a shooting lens with a focal length of 35 to 40mm. It is reasonable to use focal length lenses. Therefore, in order to create a camera that satisfies these functions, in addition to the main lens system, a sub-lens system is installed inside the camera, and as the main lens system moves, the sub-lens system moves in and out of the photographing optical axis as necessary. In this way, a camera that was able to take pictures at different focal lengths, such as general photography using only the main lens system and photography using a combined optical system of the main lens system and the sub lens system, was developed in JP-A-Sho. No. 52-76919,
Various proposals have been made in Japanese Patent Application Laid-Open No. 54-33027, etc.
第１図は従来例の標準撮影及び望遠撮影が可能
な光学系の一例である。L1はレンズシヤツタＳ
を有する主レンズ系、L2は副レンズ系、Ｆはフ
イルム面であり、ａは主レンズ系L1による標準
撮影状態を、ｂは望遠撮影状態を、それぞれ示
し、望遠撮影状態では主レンズ系L1及びレンズ
シヤツタＳがカメラの前側へ移動するとともに副
レンズ系L2がレンズシヤツタＳの後側の光軸上
に位置されるものである。 FIG. 1 is an example of a conventional optical system capable of standard photography and telephoto photography. L 1 is lens shutter S
, L2 is the secondary lens system, F is the film surface, a indicates the standard shooting condition with the main lens system L1 , and b indicates the telephoto shooting condition. In the telephoto shooting condition, the main lens system L1 and the lens shutter S move toward the front of the camera, and the sub-lens system L2 is positioned on the optical axis behind the lens shutter S.
ところが、このような撮影光学系の可変焦点カ
メラにおいては、それぞれの焦点距離において、
撮影光学系の基準ピント出しとしてのいわゆる無
限ピント出しが必要である。 However, in a variable focus camera with such a photographic optical system, at each focal length,
So-called infinite focusing is required as a reference focusing for the photographic optical system.
たとえば、主レンズ系のみの標準撮影を行う状
態に設定されていたとすれば、この時の無限ピン
ト出しを行つたとしても、次に主レンズ系を移動
させそれに連動する副レンズ系を合成させた場合
には、再びその位置での無限ピント出しが必要と
なる。 For example, if the main lens system is set to perform standard shooting with only the main lens system, even if infinite focusing is performed at this time, the main lens system will be moved next and the sub lens system linked to it will be combined. In this case, infinite focusing is required at that position again.
しかし、従来より提案されている可変焦点カメ
ラにおいては、この無限ピント出しの必要性に関
しては考慮されていないし、また具体的な調整手
段も有していない。 However, conventionally proposed variable focus cameras do not take into consideration the necessity of infinite focusing, and do not have any specific adjustment means.
本発明は前記従来例の欠点を除去し、撮影光学
系の焦点距離を切換え可能なカメラの結像性能を
向上できる基準ピント出し調整機構を備えた焦点
距離可変装置を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a variable focal length device equipped with a reference focusing adjustment mechanism that can eliminate the drawbacks of the conventional example and improve the imaging performance of a camera capable of changing the focal length of a photographic optical system. .
以下、本発明の実施例を図面に基づいて説明す
る。 Embodiments of the present invention will be described below based on the drawings.
第２図は本発明に係る一実施例のカメラの焦点
距離可変装置の要部の概略断面図で、ａは標準撮
影状態を、ｂは望遠撮影状態を、それぞれ示す。 FIG. 2 is a schematic sectional view of a main part of a variable focal length device of a camera according to an embodiment of the present invention, in which a shows a standard shooting state and b shows a telephoto shooting state, respectively.
図中、主レンズ筒１には主撮影光学系としての
主レンズ系２が保持され、かつ撮影光軸と平行に
主レンズ系２を保持する第１の保持部材としての
鏡筒バー３が固着されており、該鏡筒バー３は鏡
筒ユニツト２０に２箇所で嵌合支持されている。
該主レンズ鏡筒１には、また基準ピント出しの調
整を行う第１の調整部材としての無限調整ビス４
を螺合し、かつ鏡筒ユニツト２０の前面との間で
前記鏡筒バー３に巻装してばね５により後方に付
勢され、該無限調整ビス４の先端は、鏡筒ユニツ
ト２０に嵌合して撮影光軸まわりに回動可能な回
転リング６のカム面に当接されている。そして該
回転リング６が図示しない手段により回動する
と、主レンズ筒１が繰り出し制御されて合焦動作
が行われる。 In the figure, a main lens system 2 as a main photographing optical system is held in a main lens barrel 1, and a lens barrel bar 3 as a first holding member that holds the main lens system 2 in parallel with the photographing optical axis is fixed. The lens barrel bar 3 is fitted and supported by the lens barrel unit 20 at two locations.
The main lens barrel 1 also includes an infinity adjustment screw 4 as a first adjustment member for adjusting reference focusing.
is screwed together and wound around the lens barrel bar 3 between the front surface of the lens barrel unit 20 and biased backward by a spring 5, and the tip of the infinite adjustment screw 4 is fitted into the lens barrel unit 20. Together, they are brought into contact with a cam surface of a rotary ring 6 that is rotatable around the photographing optical axis. When the rotary ring 6 is rotated by means not shown, the main lens barrel 1 is controlled to extend and a focusing operation is performed.
主レンズ筒１の後方にはシヤツタ部７が鏡筒ユ
ニツト２０に設けられ、さらにその後方の空間部
に、副撮影光学系としての副レンズ系９を保持す
るエクステンダ８が、鏡筒ユニツト２０の２箇所
で嵌合支持されている第２の保持部材としての軸
１０によつて回動可能に設けられている。該エク
ステンダ８は鏡筒ユニツト２０との間で軸１０に
巻装した弾性部材としてのばね１１により後方に
付勢され、鏡筒ユニツト２０の後面に螺合された
基準ピント出しの調整を行う第２の調整部材であ
る調整ビス１２に当接している。 A shutter section 7 is provided in the lens barrel unit 20 at the rear of the main lens barrel 1, and an extender 8 that holds a sub lens system 9 as a sub photographing optical system is provided in a space behind the shutter section 7 of the lens barrel unit 20. It is rotatably provided by a shaft 10 serving as a second holding member that is fitted and supported at two locations. The extender 8 is biased rearward by a spring 11 as an elastic member wound around a shaft 10 between the extender 8 and the lens barrel unit 20. It is in contact with the adjusting screw 12 which is the second adjusting member.
鏡筒ユニツト２０の後面とカメラ本体２１の暗
箱部を形成する遮光枠板１３との間には蛇腹１４
の各端面が固設されている。 A bellows 14 is provided between the rear surface of the lens barrel unit 20 and the light-shielding frame plate 13 that forms the dark box portion of the camera body 21.
Each end face is fixed.
また、撮影光軸と平行に支持バー１５が鏡筒ユ
ニツト２０に固着されかつ鏡筒ユニツト２０に嵌
装してカメラ本体２１の前面に取付けた保持板１
６の前後両板部で摺動可能に嵌合保持されてい
る。一方、該保持板１６の前板部に調整部材であ
る調整ビス１７を螺合するとともにその前後両板
部に両端を固定されかつ撮影光軸に平行な案内部
材としての案内バー１８が、鏡筒ユニツト２０の
他側の嵌合している。したがつて、鏡筒ユニツト
２０は該案内バー１８をガイドとして支持バー１
５とともにカメラの前後方向に所定の移動ストロ
ークを摺動可能である。 Further, a support bar 15 is fixed to the lens barrel unit 20 in parallel with the photographing optical axis, and a holding plate 1 is fitted onto the lens barrel unit 20 and attached to the front surface of the camera body 21.
Both the front and rear plate portions of 6 are slidably fitted and held. On the other hand, an adjustment screw 17, which is an adjustment member, is screwed into the front plate part of the holding plate 16, and a guide bar 18, which is a guide member, is fixed at both ends to the front and rear plates of the holding plate 16 and is parallel to the photographing optical axis. The other side of the cylinder unit 20 is fitted. Therefore, the lens barrel unit 20 uses the guide bar 18 as a guide to support the support bar 1.
5, it is possible to slide a predetermined movement stroke in the front-rear direction of the camera.
なお、１９はスプロケツト、２２はカメラ外装
ケースである。 Note that 19 is a sprocket, and 22 is a camera exterior case.
以上の構成の本実施例の無限ピント調整動作に
ついて説明する。 The infinite focus adjustment operation of this embodiment with the above configuration will be explained.
まず、第２図ａの主レンズ系のみの第１の焦点
距離状態である標準撮影状態においては、フイル
ム面に対して主レンズ系２を保持する主レンズ筒
１の無限ピント調整は、無限調整ビス４のねじ込
み量を変えることにより主レンズ筒１は鏡筒バー
３にガイドされて鏡筒ユニツト２０内において鏡
筒ユニツト２０の摺動ストロークを変化させずに
撮影光軸上をカメラ本体２１に対し前後に微少移
動して無限の被写体に対するピント出しの調整を
行うことができる。 First, in the standard photographing state, which is the first focal length state of only the main lens system shown in Figure 2a, the infinite focus adjustment of the main lens barrel 1 that holds the main lens system 2 relative to the film surface is By changing the screwing amount of the screw 4, the main lens barrel 1 is guided by the lens barrel bar 3 and moves along the photographing optical axis toward the camera body 21 within the lens barrel unit 20 without changing the sliding stroke of the lens barrel unit 20. On the other hand, it is possible to adjust the focus for an infinite number of subjects by moving slightly back and forth.
次に、第２図ａの標準撮影状態から第２図ｂの
第２の焦点距離状態である望遠撮影状態に切換え
られた場合は、撮影光学系とともに鏡筒ユニツト
２０は調整ビス１７に当接するまでカメラの前側
に移動して停止し、これに連動して図示しないカ
ム手段を介してエクステンダ８が軸１０を中心に
回動し副レンズ系９を撮影光軸上に位置させる。
ここで、エクスデンダ８に当接している調整ビス
１２のねじ込み量をばね１１の付勢力に抗して調
整することにより副レンズ系９を調整するエクス
テンダ８の位置が鏡筒ユニツト２０内において鏡
筒ユニツト２０の移動ストロークを変化させずに
撮影光軸上をカメラ本体に対し前後方向に微少移
動してフイルム面との距離を変化させ、無限の被
写体に対するピント出しの調整を行うことができ
る。 Next, when switching from the standard shooting state shown in FIG. 2a to the telephoto shooting state, which is the second focal length state shown in FIG. The extender 8 moves to the front of the camera until it stops, and in conjunction with this, the extender 8 rotates about the shaft 10 via a cam means (not shown) to position the sub-lens system 9 on the photographing optical axis.
Here, by adjusting the screwing amount of the adjusting screw 12 that is in contact with the extender 8 against the biasing force of the spring 11, the position of the extender 8 for adjusting the sub lens system 9 can be adjusted within the lens barrel unit 20. Without changing the movement stroke of the unit 20, the distance to the film surface can be changed by slightly moving forward and backward on the photographing optical axis with respect to the camera body, thereby making it possible to adjust the focus for an infinite number of subjects.
このようにして、標準撮影状態及び望遠撮影状
態のいずれに撮影光学系を切り換えても無限の被
写体に対するピントを良好に保証することができ
る。 In this way, it is possible to ensure excellent focus on an infinite number of subjects, regardless of whether the photographing optical system is switched to either the standard photographing state or the telephoto photographing state.
前述の場合の調整方式では主レンズ系２と副レ
ンズ系９のそれぞれに対して無限ピント調整を行
つていたが、別の調整方式として主レンズ系２と
副レンズ系９との相対的な位置関係を変えないで
両系を一体として無限ピント調整を行つてもよ
い。 In the adjustment method in the case described above, infinite focus adjustment was performed for each of the main lens system 2 and the sub lens system 9, but another adjustment method is to adjust the relative focus between the main lens system 2 and the sub lens system 9. Infinite focus adjustment may be performed by integrating both systems without changing their positional relationship.
この場合は、調整ビス１７のねじ込み量を調整
することにより鏡筒ユニツト２０の望遠撮影状態
での停止位置が変化するから、主レンズ系２及び
副レンズ系９を含む撮影光学系とフイルム面との
距離が変化して無限の被写体に対するピント出し
が行うことができる。 In this case, since the stopping position of the lens barrel unit 20 in the telephoto shooting state changes by adjusting the screwing amount of the adjustment screw 17, the shooting optical system including the main lens system 2 and the sub lens system 9 and the film surface By changing the distance, it is possible to focus on an infinite number of subjects.
したがつて、第２図に示す実施例において、調
整ビス１２及び１７はいずれか一方のみによる手
段を採用して差支えない。 Therefore, in the embodiment shown in FIG. 2, only one of the adjustment screws 12 and 17 may be used.
本発明は、以上説明したように主撮影光学系の
撮影光路内での位置を移動させるとともに副撮影
光学系を撮影光路に出入りさせることにより焦点
距離を切換える可変焦点カメラにおいて、それぞ
れの焦点距離での位置にて無限ピント調整が簡単
に行うことができ、撮影光学系切換え時のピント
ズレをなくすことができる効果がある。 As explained above, the present invention provides a variable focus camera that changes the focal length by moving the position of the main photographing optical system within the photographing optical path and moving the sub photographing optical system in and out of the photographing optical path. Infinite focus adjustment can be easily performed at the position , which has the effect of eliminating focus deviation when switching photographic optical systems.
第１図は本発明の可変焦点カメラに使用される
光学系の一例の説明図で、ａは標準撮影状態、ｂ
は望遠撮影状態を示し、第２図は本発明のカメラ
の焦点距離可変装置の一実施例の要部の概略断面
図で、ａは標準撮影状態、ｂは望遠撮影状態を示
す。
１……主レンズ筒、２……主レンズ系（主撮影
光学系）、３……鏡筒バー（第１の保持部材）、４
……無限調整ビス（第１の調整部材）、６……回
転リング、７……シヤツタ部、８……エクステン
ダ、９……副レンズ系（副撮影光学系）、１０…
…軸（第２の保持部材）、１１……ばね（弾性部
材）、１２……調整ビス（第２の調整部材）、１３
……遮光枠板、１４……蛇腹、１５……支持バ
ー、１６……保持板、１７……調整ビス（調整部
材）、１８……案内バー（案内部材）、２０……鏡
筒ユニツト、２１……カメラ本体。
FIG. 1 is an explanatory diagram of an example of the optical system used in the variable focus camera of the present invention, in which a is a standard photographing state and b is
2 shows a telephoto shooting state, and FIG. 2 is a schematic sectional view of a main part of an embodiment of a variable focal length device for a camera according to the present invention, in which a shows a standard shooting state and b shows a telephoto shooting state. 1... Main lens barrel, 2... Main lens system (main photographing optical system), 3... Lens barrel bar (first holding member), 4
... Infinite adjustment screw (first adjustment member), 6 ... Rotating ring, 7 ... Shutter section, 8 ... Extender, 9 ... Sub-lens system (sub-photographing optical system), 10...
...Shaft (second holding member), 11... Spring (elastic member), 12... Adjustment screw (second adjustment member), 13
...shading frame plate, 14 ... bellows, 15 ... support bar, 16 ... holding plate, 17 ... adjustment screw (adjustment member), 18 ... guide bar (guide member), 20 ... lens barrel unit, 21...Camera body.
Claims (1)
部材に案内されて移動することにより上記カメラ
本体に対して前後方向に所定の移動ストロークを
移動する鏡筒と、該鏡筒の移動に伴つて撮影光路
を移動する主撮影光学系と、該主撮影光学系を保
持し、該主撮影光学系を上記鏡筒の移動に伴つて
該鏡筒と一体的に移動させる第１の保持部材と、
上記鏡筒の移動に伴つて上記撮影光路に出入りし
焦点距離を切換える副撮影光学系と、該副撮影光
学系を保持し、該副撮影光学系を上記鏡筒の移動
に伴つて該鏡筒と一体的に移動させるとともに該
鏡筒の移動に連動して上記撮影光路に出入りさせ
該副撮影光学系が上記撮影光路から出た状態での
上記主撮影光学系による第１の焦点距離状態並び
に該副撮影光学系が上記撮影光路に入つた状態で
の上記主撮影光学系と上記副撮影光学系の組合せ
による第２の焦点距離状態に切換える第２の保持
部材と、上記第１の保持部材による上記主撮影光
学系の保持位置を上記鏡筒に対して撮影光軸方向
に変位させ該鏡筒の移動ストロークを変化させず
に上記主撮影光学系をカメラ本体に対して変位さ
せて上記副撮影光学系が撮影光路から出た焦点距
離状態での基準ピント出しの調整を行う第１の調
整部材と、上記副撮影光学系を上記鏡筒に対して
弾性的に付勢するための弾性部材と、該弾性部材
の付勢力に抗して上記第２の保持部材による上記
副撮影光学系の保持位置を上記鏡筒に対して撮影
光軸方向に変位させ、該鏡筒の移動ストロークを
変化させずに上記副撮影光学系をカメラ本体に対
して変位させて該副撮影光学系が撮影光路に入つ
た焦点距離状態での基準ピント出しの調整を行う
第２の調整部材とを備えたことを特徴とするカメ
ラの焦点距離可変装置。1. A guide member provided on the camera body, a lens barrel that moves a predetermined movement stroke in the front and back direction with respect to the camera body by moving while being guided by the guide member, and a camera that takes pictures as the lens barrel moves. a main photographing optical system that moves along the optical path; a first holding member that holds the main photographic optical system and moves the main photographic optical system integrally with the lens barrel as the lens barrel moves;
a sub-photographing optical system that moves in and out of the photographic optical path to change the focal length as the lens barrel moves; a first focal length state of the main photographing optical system in a state in which the sub-photographing optical system exits from the photographing optical path; and a second holding member for switching to a second focal length state by a combination of the main photographing optical system and the sub-photographing optical system when the sub-photographing optical system enters the photographing optical path; and the first holding member. The holding position of the main photographing optical system is displaced relative to the lens barrel in the direction of the photographing optical axis, and the main photographing optical system is displaced relative to the camera body without changing the movement stroke of the lens barrel. a first adjusting member that adjusts reference focusing in a focal length state where the photographing optical system exits from the photographing optical path; and an elastic member that elastically biases the sub-photographing optical system with respect to the lens barrel. and displacing the holding position of the sub-photographing optical system by the second holding member in the direction of the photographing optical axis with respect to the lens barrel against the biasing force of the elastic member, thereby changing the movement stroke of the lens barrel. and a second adjustment member for adjusting the reference focusing in a focal length state in which the sub-photographing optical system enters the photographing optical path by displacing the sub-photographing optical system with respect to the camera body without moving the sub-photographing optical system. A camera focal length variable device featuring:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12378582A JPS5915227A (en) | 1982-07-17 | 1982-07-17 | Infinite focusing mechanism of variable focus camera |
| US06/788,064 US4725864A (en) | 1982-07-17 | 1985-10-16 | Vari-focal camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12378582A JPS5915227A (en) | 1982-07-17 | 1982-07-17 | Infinite focusing mechanism of variable focus camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915227A JPS5915227A (en) | 1984-01-26 |
| JPS6410051B2 true JPS6410051B2 (en) | 1989-02-21 |
Family
ID=14869233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12378582A Granted JPS5915227A (en) | 1982-07-17 | 1982-07-17 | Infinite focusing mechanism of variable focus camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915227A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2008682B3 (en) * | 1986-11-25 | 1989-08-01 | Battelle Memorial Institute | SILICON NITRIDE POWDER COMPOSITION REINFORCED WITH CRYSTALLINE SILICON CARBIDE FILAMENTS, AND ITS USE IN THE MANUFACTURE OF SINTERED PARTS. |
| GB9021222D0 (en) * | 1990-09-28 | 1990-11-14 | Raychem Ltd | Circuit protection device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3185061A (en) * | 1962-08-13 | 1965-05-25 | Leonard F Westphalen | Multifocal camera |
| US3812509A (en) * | 1972-04-14 | 1974-05-21 | L Westphalen | Multifocal adapter for cameras |
| JPS5414495Y2 (en) * | 1974-08-12 | 1979-06-15 | ||
| US4099866A (en) * | 1976-12-08 | 1978-07-11 | International Business Machines Corporation | Focal adjustment on a single-focus lens in a continuously variable magnification system |
| JPS53149319A (en) * | 1977-06-01 | 1978-12-26 | Fuji Photo Film Co Ltd | Lens system changeover type camera |
| JPS5433027A (en) * | 1977-08-19 | 1979-03-10 | Nitto Optical | Camera having focall distance changeeover lens |
| JPS5474733A (en) * | 1977-11-28 | 1979-06-15 | Ricoh Co Ltd | Positioning device for moving optical system of optical device of copying machines |
| JPS5652709A (en) * | 1979-10-08 | 1981-05-12 | Canon Inc | Focus control device of camera |
| JPS5939682Y2 (en) * | 1979-12-11 | 1984-11-07 | 京セラ株式会社 | Lens extension adjustment mechanism |
| JPS6032655Y2 (en) * | 1980-07-25 | 1985-09-30 | キヤノン株式会社 | Lens feeding device |
-
1982
- 1982-07-17 JP JP12378582A patent/JPS5915227A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5915227A (en) | 1984-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4114171A (en) | Reflex camera with internal zoom lens | |
| US5450242A (en) | Zoom lens barrel | |
| KR940010590B1 (en) | Lens shutter camera including zoom-lens | |
| US4104663A (en) | Multiple objective lens camera | |
| US5345287A (en) | Apparatus for correcting parallax and/or diopter of camera | |
| US3841735A (en) | Zoom lens system operable for extremely short distance photography | |
| EP0783129B1 (en) | Optical apparatus | |
| US4558927A (en) | Zoom lens assembly | |
| JPS6410051B2 (en) | ||
| JPS6347865Y2 (en) | ||
| JPH0145603B2 (en) | ||
| JPS5967504A (en) | Interlocking mechanism of auxiliary lens system for variable focus camera | |
| JPH0785157B2 (en) | Lens barrel for video camera | |
| JPS622238A (en) | Camera | |
| JPH08122612A (en) | Structure of cam of lens moving mechanism | |
| JP3055025B2 (en) | Focusing mechanism for external viewfinder | |
| JPH01207731A (en) | Camera | |
| JPS5952403B2 (en) | Zoom lens barrel capable of macro photography | |
| JP3364910B2 (en) | Zoom lens device | |
| JPS6134504Y2 (en) | ||
| JPS6326642A (en) | Lens barrel for video camera | |
| JP3409811B2 (en) | Viewfinder diopter adjustment device | |
| JPH0762752B2 (en) | Zoom lens camera | |
| JP2904375B2 (en) | Viewfinder mounting mechanism | |
| JPH02148025A (en) | Zoom lens camera |