JPS58105528U - automatic focus device - Google Patents
automatic focus deviceInfo
- Publication number
- JPS58105528U JPS58105528U JP179182U JP179182U JPS58105528U JP S58105528 U JPS58105528 U JP S58105528U JP 179182 U JP179182 U JP 179182U JP 179182 U JP179182 U JP 179182U JP S58105528 U JPS58105528 U JP S58105528U
- Authority
- JP
- Japan
- Prior art keywords
- focusing lens
- light receiving
- lens
- focusing
- receiving element
- 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
Landscapes
- Focusing (AREA)
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
図面は本考案の実施例が示され、第１図は撮像光路にお
けるレンズ系の原理図、第２図は自動合焦装置のブロッ
ク説明図、第３図は合焦レンズ位置と位置検出信号の関
係説明図、第４図は自動合焦装置の他の実施例説明図、
第５図６１設定基準位置ｒの他の位置説明図である。
１・・・・・・合焦レンズ、４・・・・・・第１結像レ
ンズ、５・・・・・・画像受光部材、１０・・芹第２結
像レンズ、１１・・・・・・合焦検出素子回路、１３・
・・・・・位置センサー、７１４・・・・・・方向判別
回路、１５・・・・・・一致回路。The drawings show an embodiment of the present invention; Fig. 1 is a principle diagram of the lens system in the imaging optical path, Fig. 2 is a block diagram of the automatic focusing device, and Fig. 3 is a diagram showing the focusing lens position and position detection signal. Relationship explanatory diagram, FIG. 4 is an explanatory diagram of another embodiment of the automatic focusing device,
FIG. 5 is another position explanatory diagram of the 61 set reference position r. DESCRIPTION OF SYMBOLS 1... Focusing lens, 4... First imaging lens, 5... Image light receiving member, 10... Second imaging lens, 11...・・Focus detection element circuit, 13・
...Position sensor, 714 ... Direction discrimination circuit, 15 ... Matching circuit.
Claims (1)
ズとの間で入射光の一部を分岐し、分岐光を第２結像レ
ンズを介して受光素子に導（と共に、この素子の出力に
より合焦レンズを移動させる自動合焦装置に於て、第２
結像レンズ又は受光素子を光軸方向に可動へすると共に
、合焦レンズの設定基準位置における近点から無限大ま
で走査できる領域を連続往復させる手段と、受光素子出
力により像位置を検出する手段と、該手段の出力と合焦
レンズ位置との差を検出して合焦レンズを移動させる手
段と、上記位置検出出力と合焦レンズ位置との前後を検
出して合焦レンズの移動方向を定める手段とを備えると
共に、少くとも自動合焦開始時に合焦レンズを基準位置
に導き、合焦レンズ又は第２結像レンズ若しくは受光素
子を移動走査して受光素子出力で像位置を検出して合焦
レンズを駆動する手段を備えた自動合焦装置。
゛A part of the incident light is split between the focusing lens and the first imaging lens that forms the image on the image light receiving member, and the branched light is guided to the light receiving element via the second imaging lens (and this element In an automatic focusing device that moves the focusing lens by the output of
Means for movable the imaging lens or light receiving element in the optical axis direction and continuously reciprocating an area that can be scanned from the near point to infinity at the set reference position of the focusing lens, and means for detecting the image position by the output of the light receiving element. a means for detecting the difference between the output of the means and the focusing lens position to move the focusing lens; and a means for detecting the front and back of the position detection output and the focusing lens position to determine the moving direction of the focusing lens. At least when automatic focusing is started, the focusing lens is guided to a reference position, the focusing lens, the second imaging lens, or the light receiving element is moved and scanned, and the image position is detected by the output of the light receiving element. An automatic focusing device with means for driving a focusing lens.
゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP179182U JPS58105528U (en) | 1982-01-12 | 1982-01-12 | automatic focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP179182U JPS58105528U (en) | 1982-01-12 | 1982-01-12 | automatic focus device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58105528U true JPS58105528U (en) | 1983-07-18 |
| JPH0136163Y2 JPH0136163Y2 (en) | 1989-11-02 |
Family
ID=30014795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP179182U Granted JPS58105528U (en) | 1982-01-12 | 1982-01-12 | automatic focus device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58105528U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57204503A (en) * | 1981-06-11 | 1982-12-15 | Matsushita Electric Ind Co Ltd | Automatic focusing system |
-
1982
- 1982-01-12 JP JP179182U patent/JPS58105528U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57204503A (en) * | 1981-06-11 | 1982-12-15 | Matsushita Electric Ind Co Ltd | Automatic focusing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0136163Y2 (en) | 1989-11-02 |
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