JPH0444631U - - Google Patents
Info
- Publication number
- JPH0444631U JPH0444631U JP8597590U JP8597590U JPH0444631U JP H0444631 U JPH0444631 U JP H0444631U JP 8597590 U JP8597590 U JP 8597590U JP 8597590 U JP8597590 U JP 8597590U JP H0444631 U JPH0444631 U JP H0444631U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- photographing optical
- correction
- driving
- tilt
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Focusing (AREA)
Description
第１図は一実施例を示すブロツク図、第２図は
レンズ駆動制御プログラム例を示すフローチヤー
ト、第３図は従来のオートフオーカスカメラのレ
ンズ駆動装置を示すブロツク図、第４図は伝達機
構部を第３図の矢印方向から見た図、第５図はカ
メラを正位置に構えた場合に従来のレンズ駆動装
置により撮影レンズを駆動したときの像面移動速
度と像面移動量を示す図、第６図はギアのバツク
ラツシユを説明する図、第７図はカメラを傾けて
構えた場合に従来のレンズ駆動装置により撮影レ
ンズを駆動したときの像面移動速度と像面移動量
を示す図である。
１……焦点検出部、２……制御部、２ａ……補
正部、２ｂ……補正低減部、３……撮影レンズ、
４……伝達機構、５……モータ駆動回路、Ｍ……
モータ、６……レンズ保持筒、６ａ，７ａ……ヘ
リコイド、７……鏡筒、８……カメラボデイ、９
……レンズ、１０……傾斜センサ。
Fig. 1 is a block diagram showing one embodiment, Fig. 2 is a flowchart showing an example of a lens drive control program, Fig. 3 is a block diagram showing a lens drive device of a conventional autofocus camera, and Fig. 4 is a transmission diagram. A diagram of the mechanism section viewed from the direction of the arrow in Figure 3, and Figure 5 shows the image plane movement speed and image plane movement amount when the photographing lens is driven by a conventional lens drive device when the camera is held in the correct position. Figure 6 is a diagram explaining the backlash of the gear, and Figure 7 shows the image plane movement speed and image plane movement amount when the photographing lens is driven by a conventional lens drive device when the camera is held tilted. FIG. DESCRIPTION OF SYMBOLS 1... Focus detection part, 2... Control part, 2a... Correction part, 2b... Correction reduction part, 3... Photographic lens,
4...Transmission mechanism, 5...Motor drive circuit, M...
Motor, 6... Lens holding tube, 6a, 7a... Helicoid, 7... Lens barrel, 8... Camera body, 9
...Lens, 10...Tilt sensor.
Claims (1)
前記駆動手段の駆動力を前記撮影光学系に伝達す
る伝達機構と、 この伝達機構のバツクラツシユにより生ずる前
記撮影光学系の駆動誤差をなくすように前記撮影
光学系の駆動量を補正する補正手段とを備えたオ
ートフオーカスカメラのレンズ駆動装置において
、 前記撮影光学系の光軸と地平面との傾きを検出
する傾き検出手段と、 この傾き検出手段によつて検出された前記撮影
光学系の傾きが大きいときは、傾きが小さいとき
よりも前記補正手段と前記補正量が小さくなるよ
うに補正量を低減する低減手段とを備えることを
特徴とするオートフオーカスカメラのレンズ駆動
装置。[Scope of Claim for Utility Model Registration] A driving means for driving a photographing optical system to focus, and a transmission mechanism located between the driving means and the photographing optical system and transmitting the driving force of the driving means to the photographing optical system. and a correction means for correcting the amount of drive of the photographing optical system so as to eliminate a driving error of the photographing optical system caused by the backlash of the transmission mechanism, wherein the photographing optical system comprises: a tilt detecting means for detecting the tilt between the optical axis and the ground plane; and when the tilt of the photographing optical system detected by the tilt detecting means is large, the correction means and the correction 1. A lens drive device for an autofocus camera, comprising a reduction means for reducing the amount of correction so that the amount of correction becomes smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8597590U JP2503518Y2 (en) | 1990-08-14 | 1990-08-14 | Lens drive device for autofocus cameras |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8597590U JP2503518Y2 (en) | 1990-08-14 | 1990-08-14 | Lens drive device for autofocus cameras |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0444631U true JPH0444631U (en) | 1992-04-15 |
| JP2503518Y2 JP2503518Y2 (en) | 1996-07-03 |
Family
ID=31817386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8597590U Expired - Lifetime JP2503518Y2 (en) | 1990-08-14 | 1990-08-14 | Lens drive device for autofocus cameras |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503518Y2 (en) |
-
1990
- 1990-08-14 JP JP8597590U patent/JP2503518Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503518Y2 (en) | 1996-07-03 |
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