JPS6227314U - - Google Patents
Info
- Publication number
- JPS6227314U JPS6227314U JP11938285U JP11938285U JPS6227314U JP S6227314 U JPS6227314 U JP S6227314U JP 11938285 U JP11938285 U JP 11938285U JP 11938285 U JP11938285 U JP 11938285U JP S6227314 U JPS6227314 U JP S6227314U
- Authority
- JP
- Japan
- Prior art keywords
- zoom
- rotor
- tube
- drive mechanism
- coreless motor
- 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 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Focusing (AREA)
- Lens Barrels (AREA)
- Dc Machiner (AREA)
Description
第１図は本考案に係るズームレンズ鏡筒のレン
ズ駆動機構の実施例の要部の上半部縦断面図、第
２図はそのコアレスモータ部分の一部破断した分
解斜視図、第３図はそのモータ作動回路図、第４
図は従来例のズームレンズ鏡筒のレンズ駆動機構
の上半部縦断面図である。
２１……固定筒、２１ａ……カム溝、２２……
ヨーク、２３……磁石、２４……ヘリコイド筒、
２５……内側のロータ、２６……内側のコイル、
２８……回転伝達キー、２９……フオーカスレン
ズ保持筒、３０……軸受部、３１，３９……ブラ
シ、３４……ズーム筒、３４ｂ……ねじ部、３５
……外側のロータ、３６……外側のコイル、３８
……回転部材、３８ａ……内径ねじ部、４０……
ズーム制御用スイツチ、４１，４２……接点、４
４……コロ、Ｌ１，Ｌ３……ズームレンズ、Ｌ２
……補正レンズ、Ｌ４……フオーカス用レンズ、
Ｌ５……リレーレンズ。
FIG. 1 is a vertical sectional view of the upper half of the main part of an embodiment of the lens drive mechanism of a zoom lens barrel according to the present invention, FIG. 2 is a partially broken exploded perspective view of the coreless motor portion, and FIG. 3 is the motor operating circuit diagram, No. 4
The figure is a vertical sectional view of the upper half of a lens drive mechanism of a conventional zoom lens barrel. 21... fixed cylinder, 21a... cam groove, 22...
Yoke, 23... magnet, 24... helicoid tube,
25... Inner rotor, 26... Inner coil,
28... Rotation transmission key, 29... Focus lens holding tube, 30... Bearing section, 31, 39... Brush, 34... Zoom tube, 34b... Threaded section, 35
...Outer rotor, 36...Outer coil, 38
...Rotating member, 38a...Inner diameter threaded portion, 40...
Zoom control switch, 41, 42...Contact, 4
4...Colo, L1 , L3 ...Zoom lens, L2
...Correction lens, L 4 ...Focus lens,
L5 ...Relay lens.
Claims (1)
るロータと外側のコイルを有するロータとを同軸
的に設け、該両コイル間に磁石を配置して内外２
つのコアレスモータを形成し、外側のコアレスモ
ータでズーム操作を行い、内側のコアレスモータ
でフオーカス操作を行うようにしたレンズ駆動機
構。 ２ 外側のコアレスモータの出力を伝達するロー
タと一体的な回転部材が、固定筒にカム結合して
いるズーム筒とねじ結合し、該ズーム筒を光軸方
向に移動させることによりズーム操作を行うよう
にした実用新案登録請求の範囲第１項記載のレン
ズ駆動機構。[Claims for Utility Model Registration] 1. A rotor having an inner coil and a rotor having an outer coil are provided coaxially within a zoom lens barrel, and a magnet is arranged between the two coils to separate the inner and outer 2.
The lens drive mechanism has two coreless motors, with the outer coreless motor performing zoom operations and the inner coreless motor performing focus operations. 2. A rotating member integrated with the rotor that transmits the output of the outer coreless motor is screwed to a zoom tube that is cam-coupled to the fixed tube, and performs a zoom operation by moving the zoom tube in the optical axis direction. A lens drive mechanism according to claim 1 of the utility model registration claim.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11938285U JPS6227314U (en) | 1985-08-05 | 1985-08-05 | |
| US06/893,102 US4749269A (en) | 1985-08-05 | 1986-08-04 | Lens drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11938285U JPS6227314U (en) | 1985-08-05 | 1985-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6227314U true JPS6227314U (en) | 1987-02-19 |
Family
ID=31006702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11938285U Pending JPS6227314U (en) | 1985-08-05 | 1985-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6227314U (en) |
-
1985
- 1985-08-05 JP JP11938285U patent/JPS6227314U/ja active Pending
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