JPS6181625U - - Google Patents
Info
- Publication number
- JPS6181625U JPS6181625U JP16651484U JP16651484U JPS6181625U JP S6181625 U JPS6181625 U JP S6181625U JP 16651484 U JP16651484 U JP 16651484U JP 16651484 U JP16651484 U JP 16651484U JP S6181625 U JPS6181625 U JP S6181625U
- Authority
- JP
- Japan
- Prior art keywords
- optical axis
- zoom lens
- focusing
- movement range
- lens group
- 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
- 230000003287 optical effect Effects 0.000 claims 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Description
第１図は本考案に係るズームレンズ鏡筒の縦断
面図で、上半部は広角側状態、下半部は望遠側状
態を示し、第２図は本考案のズームレンズのフオ
ーカス用レンズ位置と変倍位置との作動特性図で
ある。
Ｌ１〜Ｌ３，Ｌ５…レンズ群、Ｌ４…フオーカ
ス用後部レンズ群、１…固定筒、２…ビーム筒、
３…ヘリコイド筒、４…コアレスモータ本体、５
…ストツパ筒、５ａ…ストツパ突子、６…ガイド
ピン、７…後部移動筒、７ｃ，７ｄ…突子、９…
永久磁石、１１…ロータ、１２…コイル、１５…
回転伝達キー、１７…ストツパ部材、１８…第１
保持筒、１９…ガイドピン、２０…第２保持筒、
２２…絞りユニツト、２８…ステータ、２９，３
０…コイル、３３…永久磁石、３４…接点。
Fig. 1 is a longitudinal cross-sectional view of the zoom lens barrel according to the present invention, the upper half shows the wide-angle side state, the lower half shows the telephoto side state, and Fig. 2 shows the focus lens position of the zoom lens of the present invention. FIG. 3 is an operation characteristic diagram between the zoom position and the zoom position. L1 to L3 , L5 ...lens group, L4 ...rear lens group for focusing, 1...fixed tube, 2...beam tube,
3... Helicoid tube, 4... Coreless motor body, 5
...Stopper tube, 5a...Stopper protrusion, 6...Guide pin, 7...Rear movable tube, 7c, 7d...Protrusion, 9...
Permanent magnet, 11...rotor, 12...coil, 15...
Rotation transmission key, 17...stopper member, 18...first
Holding cylinder, 19... Guide pin, 20... Second holding cylinder,
22...Aperture unit, 28...Stator, 29,3
0...Coil, 33...Permanent magnet, 34...Contact.
Claims (1)
に移動させることによりフオーカシングを行い、
同じ物体距離に対し該光軸上を移動させるレンズ
群の繰り出し量が変化してズーミングを行うズー
ムレンズ鏡筒において、ズーミングに応じて光軸
中心に回動移動するストツパ筒にフオーカス用レ
ンズ群の移動範囲の一方を規制する手段を設け、
該移動範囲の他方を規制する手段を固定筒に設け
て成るズームレンズ鏡筒。 Focusing is performed by moving some lens groups of the zoom lens optical system onto the optical axis.
In a zoom lens barrel that performs zooming by changing the amount of extension of the lens group that moves on the optical axis for the same object distance, the focusing lens group is mounted on a stopper tube that rotates around the optical axis in response to zooming. Provide means to restrict one side of the movement range,
A zoom lens barrel comprising a fixed barrel provided with means for regulating the other side of the movement range.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16651484U JPS6181625U (en) | 1984-11-05 | 1984-11-05 | |
| US06/768,408 US4750821A (en) | 1984-08-24 | 1985-08-22 | Zoom lens assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16651484U JPS6181625U (en) | 1984-11-05 | 1984-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6181625U true JPS6181625U (en) | 1986-05-30 |
Family
ID=30724323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16651484U Pending JPS6181625U (en) | 1984-08-24 | 1984-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6181625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01217408A (en) * | 1988-02-26 | 1989-08-31 | Olympus Optical Co Ltd | Zoom lens device |
-
1984
- 1984-11-05 JP JP16651484U patent/JPS6181625U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01217408A (en) * | 1988-02-26 | 1989-08-31 | Olympus Optical Co Ltd | Zoom lens device |
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