JPS60165921U - focus adjustment device - Google Patents
focus adjustment deviceInfo
- Publication number
- JPS60165921U JPS60165921U JP5386384U JP5386384U JPS60165921U JP S60165921 U JPS60165921 U JP S60165921U JP 5386384 U JP5386384 U JP 5386384U JP 5386384 U JP5386384 U JP 5386384U JP S60165921 U JPS60165921 U JP S60165921U
- Authority
- JP
- Japan
- Prior art keywords
- focusing
- focus adjustment
- adjustment device
- step motor
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示す焦点調節装置の斜視図
。第２図は本考案の一実施例のステップモータ駆動回路
のブロック図。
１・・・・・・フォーカシングレンズ群、２・・・・・
・鏡胴、３・・・・・・鏡胴歯車、４・・・・・・駆動
歯車、５・・・・・・減速装置、６・・・・・・ステッ
プモータ、７・・・・・・スイッチ、８・・・・・・パ
ルスモード切換回路、９・・・・・・単一パルス発生回
路、１０・・・・・・連続パルス発生回路、１１・・・
・・・回転方向制御回路。FIG. 1 is a perspective view of a focus adjustment device showing an embodiment of the present invention. FIG. 2 is a block diagram of a step motor drive circuit according to an embodiment of the present invention. 1... Focusing lens group, 2...
- Lens barrel, 3... Lens barrel gear, 4... Drive gear, 5... Speed reduction device, 6... Step motor, 7... ...Switch, 8...Pulse mode switching circuit, 9...Single pulse generation circuit, 10...Continuous pulse generation circuit, 11...
...Rotation direction control circuit.
Claims (2)
うフォーカシングレンズ群を有するレンズ系を備え、結
像状態を確認できる手段を備えた撮像装置の焦点調節装
置において、ステップモータを動力源として用い、フォ
ーカシングレンズ群を駆動するように構成し、該ステ゛
ジブモー−夕を操作するためのスイッチを設けたことを
特徴とする焦点調節装置。(1) A step motor is used as a power source in a focusing device for an imaging device, which is equipped with a lens system having a focusing lens group that performs focusing by moving in the optical axis direction, and is equipped with a means for checking the image formation state. What is claimed is: 1. A focusing device, comprising: a focusing lens group driven by a focusing lens group;
動するための動力伝達系を、前記ステップモータへの入
力１パルスに対する前記レンズ系の焦点面の移動量が前
記レンズ系の最小の焦点深度より小さくなるように構成
したことを特徴とする実用新案登録請求の範囲第一項記
載の焦点調節装置。(2) The power transmission system for driving the focusing lens with the step motor is configured such that the amount of movement of the focal plane of the lens system with respect to one pulse input to the step motor is smaller than the minimum depth of focus of the lens system. A focus adjustment device according to claim 1 of the utility model registration claim, characterized in that the focus adjustment device is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5386384U JPS60165921U (en) | 1984-04-12 | 1984-04-12 | focus adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5386384U JPS60165921U (en) | 1984-04-12 | 1984-04-12 | focus adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60165921U true JPS60165921U (en) | 1985-11-02 |
Family
ID=30575118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5386384U Pending JPS60165921U (en) | 1984-04-12 | 1984-04-12 | focus adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60165921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014145949A (en) * | 2013-01-30 | 2014-08-14 | Ricoh Imaging Co Ltd | Lens driving device and lens driving method |
-
1984
- 1984-04-12 JP JP5386384U patent/JPS60165921U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014145949A (en) * | 2013-01-30 | 2014-08-14 | Ricoh Imaging Co Ltd | Lens driving device and lens driving method |
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