JPS5576309A - Automatic focusing device - Google Patents
Automatic focusing deviceInfo
- Publication number
- JPS5576309A JPS5576309A JP14929178A JP14929178A JPS5576309A JP S5576309 A JPS5576309 A JP S5576309A JP 14929178 A JP14929178 A JP 14929178A JP 14929178 A JP14929178 A JP 14929178A JP S5576309 A JPS5576309 A JP S5576309A
- Authority
- JP
- Japan
- Prior art keywords
- focal length
- amplitude
- zoom lens
- lens device
- optical path
- 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)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To make possible always accurate focus controling by making the amplitude of sine wave voltage variable according to the focal length of a zoom lens device.
CONSTITUTION: An image pickup tube 5 is provided for the focusing lens 2 of a zoom lens device 1, in the position approximately equal to the wavelength between this and imaging plane. In addition, a vibrating means 12 which vibrates and varies the optical path length between the lens 2 and image pickup tube 5 at the specified frequency and at the amplitude corresponding to the focal length of the zoom lens device 1 is provided, whereby the optical path length between the focusing lens 2 and imaging plane is made automatically variable by making the amplitude of the vibration smaller when the focal length of the zoom lens 1 is longer and the amplitude larger when the focal length is shorter.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14929178A JPS5576309A (en) | 1978-12-01 | 1978-12-01 | Automatic focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14929178A JPS5576309A (en) | 1978-12-01 | 1978-12-01 | Automatic focusing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5576309A true JPS5576309A (en) | 1980-06-09 |
JPS6214806B2 JPS6214806B2 (en) | 1987-04-03 |
Family
ID=15471961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14929178A Granted JPS5576309A (en) | 1978-12-01 | 1978-12-01 | Automatic focusing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576309A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5888710A (en) * | 1981-12-21 | 1983-05-26 | Nippon Kogaku Kk <Nikon> | Photographic lens structure for automatic focusing |
JPS5888728A (en) * | 1981-12-21 | 1983-05-26 | Nippon Kogaku Kk <Nikon> | Automatic focusing device of camera |
JPS58194005A (en) * | 1982-05-08 | 1983-11-11 | Nippon Kogaku Kk <Nikon> | Automatic focusing zoom lens device |
JPS5937510A (en) * | 1982-08-27 | 1984-03-01 | Sony Corp | Autofocus device |
JPS59101609A (en) * | 1982-12-01 | 1984-06-12 | Hitachi Denshi Ltd | Automatic focusing device |
JPS60142678A (en) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Automatic focus matching device |
JPS62172312A (en) * | 1986-01-24 | 1987-07-29 | Matsushita Electric Ind Co Ltd | Automatic focus adjusting device |
US4842387A (en) * | 1987-02-06 | 1989-06-27 | Hitachi, Ltd. | Automatic focusing apparatus for use in video camera and the like |
JPH0386314U (en) * | 1983-11-07 | 1991-08-30 | ||
JPH0775000A (en) * | 1994-08-22 | 1995-03-17 | Hitachi Ltd | Focusing device for video camera |
JPH09181957A (en) * | 1997-01-27 | 1997-07-11 | Hitachi Ltd | Video camera with automatic focus means |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0397975U (en) * | 1990-01-24 | 1991-10-09 | ||
JP6918741B2 (en) | 2018-04-27 | 2021-08-11 | 株式会社クボタ | Work equipment and work equipment equipped with this work equipment |
WO2019208815A1 (en) | 2018-04-27 | 2019-10-31 | 株式会社クボタ | Power generator unit and working machine |
JP7059096B2 (en) | 2018-04-27 | 2022-04-25 | 株式会社クボタ | Work equipment spraying support system |
JP6949773B2 (en) | 2018-04-27 | 2021-10-13 | 株式会社クボタ | Work machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS459617Y1 (en) * | 1968-12-17 | 1970-05-06 | ||
JPS5156626A (en) * | 1974-11-13 | 1976-05-18 | Canon Kk | JIDOSHOTENCHOSETSUSOCHI |
-
1978
- 1978-12-01 JP JP14929178A patent/JPS5576309A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS459617Y1 (en) * | 1968-12-17 | 1970-05-06 | ||
JPS5156626A (en) * | 1974-11-13 | 1976-05-18 | Canon Kk | JIDOSHOTENCHOSETSUSOCHI |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0470614B2 (en) * | 1981-12-21 | 1992-11-11 | Nippon Kogaku Kk | |
JPS5888728A (en) * | 1981-12-21 | 1983-05-26 | Nippon Kogaku Kk <Nikon> | Automatic focusing device of camera |
JPS5888710A (en) * | 1981-12-21 | 1983-05-26 | Nippon Kogaku Kk <Nikon> | Photographic lens structure for automatic focusing |
JPH0519125B2 (en) * | 1981-12-21 | 1993-03-15 | Nippon Kogaku Kk | |
JPS58194005A (en) * | 1982-05-08 | 1983-11-11 | Nippon Kogaku Kk <Nikon> | Automatic focusing zoom lens device |
JPH0559406B2 (en) * | 1982-05-08 | 1993-08-31 | Nippon Kogaku Kk | |
JPS5937510A (en) * | 1982-08-27 | 1984-03-01 | Sony Corp | Autofocus device |
JPS59101609A (en) * | 1982-12-01 | 1984-06-12 | Hitachi Denshi Ltd | Automatic focusing device |
JPH0386314U (en) * | 1983-11-07 | 1991-08-30 | ||
JPS60142678A (en) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Automatic focus matching device |
JPS62172312A (en) * | 1986-01-24 | 1987-07-29 | Matsushita Electric Ind Co Ltd | Automatic focus adjusting device |
US4842387A (en) * | 1987-02-06 | 1989-06-27 | Hitachi, Ltd. | Automatic focusing apparatus for use in video camera and the like |
JPH0775000A (en) * | 1994-08-22 | 1995-03-17 | Hitachi Ltd | Focusing device for video camera |
JPH09181957A (en) * | 1997-01-27 | 1997-07-11 | Hitachi Ltd | Video camera with automatic focus means |
Also Published As
Publication number | Publication date |
---|---|
JPS6214806B2 (en) | 1987-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5576309A (en) | Automatic focusing device | |
DE69428686T2 (en) | IMAGING DEVICE AND METHOD FOR DETERMINING FOCUS INFORMATION | |
JPS5574270A (en) | Focusing detector for tv camera | |
JPS60100113A (en) | Laser beam printer | |
FR2347696A1 (en) | VARIABLE FOCAL LENGTH LENS FOR PHOTOGRAPHIC CAMERAS | |
JPS5350851A (en) | Automatic focus control apparatus of microscope | |
JPS5245353A (en) | Automatically focusing device | |
KR940013156A (en) | Autofocus with advanced digital high pass filter | |
JPS57154206A (en) | Focusing device | |
JPS57132112A (en) | Gaussian photographic lens | |
JPS547927A (en) | Photographic lens of excellent focusing operation | |
FR2255620A1 (en) | Variable focus lens for TV cameras - gives uniform high contrast over whole image field even at extreme edges | |
JPS5319805A (en) | Automatic focusing optical device | |
JPS5497055A (en) | Automatic focusing device | |
JPS5567732A (en) | Finder optical system | |
GB2013353A (en) | Camera focus control system | |
JPS56127465A (en) | Laser printer | |
JPS54106253A (en) | Automatic focusing device | |
JPS5545171A (en) | Track detection controller | |
SU669320A1 (en) | Photography-projection paraxial apparatus | |
JPS5775071A (en) | Optical system for focus detection of television camera | |
JPS54106206A (en) | Optical recorder | |
SU694827A1 (en) | Pancratic lens | |
JPS56140301A (en) | Optical device | |
JPS5552030A (en) | Focusing optical device for single-lens reflex camera |