JPH049028U - - Google Patents
Info
- Publication number
- JPH049028U JPH049028U JP4808990U JP4808990U JPH049028U JP H049028 U JPH049028 U JP H049028U JP 4808990 U JP4808990 U JP 4808990U JP 4808990 U JP4808990 U JP 4808990U JP H049028 U JPH049028 U JP H049028U
- Authority
- JP
- Japan
- Prior art keywords
- variable focus
- lens
- lens barrel
- focal length
- focus 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
Description
第１図は、本考案の可変焦点式レンズの鏡胴に
係る一実施例の概略側断面構成図でＴＥＬＥ撮影
時の状態に在るときを示し、第２図は、第１図の
構成をより詳しく示した分解斜視図、第３図は、
第１図および第２図の状態にある可変焦点式レン
ズの鏡胴を、上方から見た場合の平面図、第４図
は、第１図の可変焦点式レンズの鏡胴における後
群枠の基部付近の一変形例を示す部分断面図、第
５図は、ＷＩＤＥポジシヨンスイツチおよびＴＥ
ＬＥポジシヨンスイツチを構成するＷＩＤＥパタ
ーン、ＴＥＬＥパターン、グランドパターンの関
係を示す配置図、第６図は、可変焦点式レンズの
鏡胴におけるＷＩＤＥ−ＴＥＬＥ切換え制御説明
図、第７図は、第１図および第２図に示す可変焦
点式レンズの鏡胴の制御部を示すブロツク図、第
８図は、同実施例におけるそれぞれの撮影モード
における焦点合せ動作を説明するためのフローチ
ヤート、第９図は、副レンズ群を撮影光路に対し
挿脱することにより焦点距離を変更し、それぞれ
の焦点距離毎の各レンズ群の移動位置を焦点距離
検出部材で規定する形式の従来の可変焦点式レン
ズの鏡胴を示す概略断面構成図、第１０図および
第１１図は、撮影光路に対する主レンズ群と副レ
ンズ群との倒れ状態を説明するための説明図で、
このうち、第１０図は、両レンズ群が互に逆方向
に倒れた状態に在る場合を、第１１図はともに同
一方向に倒れた状態に在る場合を、それぞれ示す
説明図、第１２図ａは、コギングによるモータの
自走回転トルクの変化図、第１２図ｂは、自走回
転トルクの変化に伴うモータの最終停止位置を示
す状態図、第１２図ｃおよびｄは、自走回転トル
クの変化に伴う本考案のＤＣモータの最終停止位
置を示す状態図である。
１……可変焦点式クレンズの鏡胴、ＬＭ……主
レンズ群、ＬＳ……副レンズ群、Ｏ……撮影光路
、２……鏡胴本体、２ａ……露光開口、３……レ
ンズ鏡枠、３ａ，３ｂ……壁部、４……共通ポー
ル、５……回転阻止用ポール、６……駆動リード
ねじ、７……カム板部材、７ａ……押下げ作用面
、７ｂ……保持作用面、１０……前群枠、１１…
…枠本体、１１ａ……切欠き部、１１ｂ……突起
、１２……補助枠部、１３ａ，１３ｂ……ダブル
ステー、１４……Ｔ−Ｗナツト、１５……駆動リ
ードナツト、１６……摺動ブラシ、２０……後群
枠、２１……先端部、２１ａ……位置決め突起、
２２……基部、２２ａ，２２ｃ……Ｔ−Ｗナツト
、２３……ステー、２４……係脱ピン、２５……
捻ればね、２６……押動突起、２７……連結スプ
リング、２８……調整ねじ、２９……圧縮ばね、
３１……従動ギア、３２……ロータリー・エンコ
ーダ、３３……ＤＣモータ、３４……駆動ギア、
３５……フオトインタラプタ、３６……パルス信
号発生手段、４０……ポジシヨン台、４１……ポ
ジシヨンスイツチ基板、４２……ＷＩＤＥパター
ン、４３……ＴＥＬＥパターン、ＳＷＷ……ＷＩ
ＤＥポジシヨンスイツチ、ＳＷＴ……ＴＥＬＥポ
ジシヨンスイツチ、４４……グランドパターン、
４５……支持端部、５０……制御部、５１……Ｔ
−Ｗ切換え操作釦、５２……シヤツタレリーズ釦
、５３……ＡＦ用ＩＣ、５４……モータ駆動ＩＣ
、５５……マイコン、５６……測光スイツチ、Ｗ
Ｓ……ＷＩＤＥ基準位置、ＴＳ……ＴＥＬＥ基準
位置、Ｗ１……ＷＩＤＥ最至近撮影位置、Ｗ２…
…ＷＩＤＥ無限遠撮影位置、Ｔ１……ＴＥＬＥ最
至近撮影位置、Ｔ２……ＴＥＬＥ無限遠撮影位置
。
FIG. 1 is a schematic side cross-sectional configuration diagram of one embodiment of the lens barrel of the variable focus lens of the present invention, showing the state at the time of TELE photography, and FIG. 2 shows the configuration of FIG. 1. The exploded perspective view, Figure 3, shows more details.
A plan view of the lens barrel of the variable focus lens in the states shown in Figures 1 and 2, viewed from above. Figure 4 shows the rear group frame of the lens barrel of the variable focus lens in Figure 1. FIG. 5, a partial cross-sectional view showing a modified example near the base, shows the WIDE position switch and the TE
A layout diagram showing the relationship between the WIDE pattern, TELE pattern, and ground pattern that constitute the LE position switch. FIG. 6 is an explanatory diagram of WIDE-TELE switching control in the lens barrel of a variable focus lens. FIG. FIG. 8 is a block diagram showing the control section of the lens barrel of the variable focus lens shown in FIGS. This is a conventional variable focus lens in which the focal length is changed by inserting and removing the sub lens group from the photographing optical path, and the movement position of each lens group for each focal length is determined by a focal length detection member. 10 and 11, which are schematic cross-sectional configuration diagrams showing the lens barrel, are explanatory diagrams for explaining the tilted state of the main lens group and the sub lens group with respect to the photographing optical path.
Of these, FIG. 10 is an explanatory diagram showing a case where both lens groups are tilted in opposite directions, and FIG. 11 is an explanatory diagram showing a case where both lens groups are tilted in the same direction. Figure a is a diagram showing changes in the motor's free-running rotational torque due to cogging, Figure 12b is a state diagram showing the final stop position of the motor as the free-running rotational torque changes, and Figures 12c and d are free-running rotational torque diagrams. FIG. 3 is a state diagram showing the final stop position of the DC motor of the present invention as the rotational torque changes. 1... Lens barrel of variable focus lens, LM... Main lens group, LS... Sub-lens group, O... Shooting optical path, 2... Lens barrel body, 2a... Exposure aperture, 3... Lens barrel , 3a, 3b...Wall portion, 4...Common pole, 5...Rotation prevention pole, 6...Drive lead screw, 7...Cam plate member, 7a...Press-down action surface, 7b...Holding action Surface, 10...Front group frame, 11...
...Frame body, 11a...Notch, 11b...Protrusion, 12...Auxiliary frame, 13a, 13b...Double stay, 14...T-W nut, 15...Drive lead nut, 16...Sliding Brush, 20... Rear group frame, 21... Tip, 21a... Positioning protrusion,
22... Base, 22a, 22c... T-W nut, 23... Stay, 24... Engagement/disengagement pin, 25...
Twist, 26...Pushing protrusion, 27...Connection spring, 28...Adjustment screw, 29...Compression spring,
31... Driven gear, 32... Rotary encoder, 33... DC motor, 34... Drive gear,
35...Photo interrupter, 36...Pulse signal generating means, 40...Position stand, 41...Position switch board, 42...WIDE pattern, 43...TELE pattern, SWW...WI
DE position switch, SWT...TELE position switch, 44...Ground pattern,
45...Support end portion, 50...Control unit, 51...T
-W switching operation button, 52...Shutter release button, 53...AF IC, 54...Motor drive IC
, 55...Microcomputer, 56...Photometering switch, W
S...WIDE reference position, TS...TELE reference position, W1 ...WIDE closest shooting position, W2 ...
...WIDE infinity shooting position, T1 ...TELE closest shooting position, T2 ...TELE infinity shooting position.
Claims (1)
する可変焦点式レンズの鏡胴において、雰囲気温
度の影響を受け難い材料で構成した支持台をフイ
ルム面に近接した位置に設け、該支持台に、所定
の各焦点距離を実現する際の各可動レンズ群の位
置を規定する焦点距離検出部材を取付けるように
構成して成る可変焦点式レンズの鏡胴。 (2) 前記２群以上の可動レンズ群をそれぞれ独
立的に保持する枠部材を設け、これらの枠部材の
少なくとも１つに対する光軸方向への構造的スト
ツパを、前記支持台と一体的に形成した請求項１
に記載の可変焦点式レンズの鏡胴。 (3) 前記構造的ストツパに、対象とする前記枠
部材の位置を調整するための調整手段を設けた請
求項２に記載の可変焦点式レンズの鏡胴。[Claims for Utility Model Registration] (1) At least in the lens barrel of a variable focus lens having two or more movable lens groups, a support made of a material that is not easily affected by ambient temperature is provided close to the film surface. 1. A lens barrel for a variable focus type lens, which is provided at a position, and is configured to have a focal length detection member attached to the support base to define the position of each movable lens group when achieving each predetermined focal length. (2) Frame members for independently holding the two or more movable lens groups are provided, and a structural stopper for at least one of these frame members in the optical axis direction is formed integrally with the support base. Claim 1
The variable focus lens barrel described in . (3) The variable focus lens barrel according to claim 2, wherein the structural stopper is provided with an adjusting means for adjusting the position of the target frame member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4808990U JP2546559Y2 (en) | 1990-05-10 | 1990-05-10 | Variable focus lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4808990U JP2546559Y2 (en) | 1990-05-10 | 1990-05-10 | Variable focus lens barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH049028U true JPH049028U (en) | 1992-01-27 |
| JP2546559Y2 JP2546559Y2 (en) | 1997-09-03 |
Family
ID=31564591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4808990U Expired - Lifetime JP2546559Y2 (en) | 1990-05-10 | 1990-05-10 | Variable focus lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2546559Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216481U (en) * | 1975-07-25 | 1977-02-05 | ||
| JPS60203534A (en) * | 1984-03-28 | 1985-10-15 | Iseki & Co Ltd | Wheel transmission of agricultural tractor |
| WO2011065296A1 (en) * | 2009-11-24 | 2011-06-03 | コニカミノルタオプト株式会社 | Drive device |
-
1990
- 1990-05-10 JP JP4808990U patent/JP2546559Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216481U (en) * | 1975-07-25 | 1977-02-05 | ||
| JPS60203534A (en) * | 1984-03-28 | 1985-10-15 | Iseki & Co Ltd | Wheel transmission of agricultural tractor |
| JPH0555328B2 (en) * | 1984-03-28 | 1993-08-16 | Iseki Agricult Mach | |
| WO2011065296A1 (en) * | 2009-11-24 | 2011-06-03 | コニカミノルタオプト株式会社 | Drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2546559Y2 (en) | 1997-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |