JPS5515120A - Automatic focus detecting system of optical equipment - Google Patents
Automatic focus detecting system of optical equipmentInfo
- Publication number
- JPS5515120A JPS5515120A JP8709978A JP8709978A JPS5515120A JP S5515120 A JPS5515120 A JP S5515120A JP 8709978 A JP8709978 A JP 8709978A JP 8709978 A JP8709978 A JP 8709978A JP S5515120 A JPS5515120 A JP S5515120A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- level
- point
- motor
- matching point
- 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
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To enable automatic focus detection to be performed for multple kinds of lenses by forcefully driving a servo motor until the composite waveform of S-form charcteristics having a focus matching point reaches the preset level.
CONSTITUTION: The synthesis of the S-form characteristics having a zero point being focus matching point is formed 11 by photoelectric transducers CdS1, Cds2 installed on the optical path of an optical equipment such as auto collimator or the like. At this time, a potential level setter 13 is set at the specified set level E. When the composite waveform reaches this level, a servo motor M is forcefully driven from the start point B in the G direction by way of a start direction determining circuit 16, FF circuit 15, switching amplifier circuit 19 and complementary symmetry circuit 20. Next, when the same exceeds the preset level, the force driving force is released and the motor M is scanned by the circuit 20. When the zero point A is detected, the motor M is stopped. In this way, the focus matching point may be automatically detected for multple kinds of lenses.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8709978A JPS5515120A (en) | 1978-07-19 | 1978-07-19 | Automatic focus detecting system of optical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8709978A JPS5515120A (en) | 1978-07-19 | 1978-07-19 | Automatic focus detecting system of optical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5515120A true JPS5515120A (en) | 1980-02-02 |
Family
ID=13905494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8709978A Pending JPS5515120A (en) | 1978-07-19 | 1978-07-19 | Automatic focus detecting system of optical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5515120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58140656U (en) * | 1982-03-17 | 1983-09-21 | 松下電工株式会社 | Printed board |
| JP2013072988A (en) * | 2011-09-27 | 2013-04-22 | Sharp Corp | Compound eye camera, continuous automatic focus control method using the same, control program and readable storage medium |
| WO2019201947A1 (en) * | 2018-04-18 | 2019-10-24 | MÖLLER-WEDEL OPTICAL GmbH | Optical measuring device and method for measuring an optical element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911442A (en) * | 1972-04-26 | 1974-01-31 |
-
1978
- 1978-07-19 JP JP8709978A patent/JPS5515120A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911442A (en) * | 1972-04-26 | 1974-01-31 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58140656U (en) * | 1982-03-17 | 1983-09-21 | 松下電工株式会社 | Printed board |
| JP2013072988A (en) * | 2011-09-27 | 2013-04-22 | Sharp Corp | Compound eye camera, continuous automatic focus control method using the same, control program and readable storage medium |
| WO2019201947A1 (en) * | 2018-04-18 | 2019-10-24 | MÖLLER-WEDEL OPTICAL GmbH | Optical measuring device and method for measuring an optical element |
| US11774322B2 (en) | 2018-04-18 | 2023-10-03 | MÖLLER-WEDEL OPTICAL GmbH | Optical measuring device and method for measuring an optical element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5642807A (en) | Original point resetting method of nc machine tool | |
| FR2450014A1 (en) | SERVO CIRCUIT FOR MAGNETOSCOPE | |
| JPS5515120A (en) | Automatic focus detecting system of optical equipment | |
| JPS5764713A (en) | Automatic focus controller | |
| JPS6473866A (en) | Automatic focusing device | |
| JPS5559411A (en) | Focus point detector | |
| CA2036577A1 (en) | Auto-focus system for video camera | |
| JPS5552006A (en) | Lens driving device | |
| JPS5662220A (en) | Unstable operation preventing system of automatic focus detector | |
| JPS562561A (en) | Deciding method for particle coagulation pattern | |
| GB2287369A (en) | Monitoring apparatus | |
| DK531586D0 (en) | CIRCUIT DEVICE FOR A AUDIO AND / OR VIDEO PLAYER PLAYER | |
| JPH0440783B2 (en) | ||
| JPS5662217A (en) | Position detector | |
| JPS5635111A (en) | Focus detector of phase contrast microscope | |
| JPS6423472A (en) | Track seek device | |
| JPS5785012A (en) | Automatic focusing device | |
| JPS5674208A (en) | Automatic focus adjusting device | |
| JPS544308A (en) | Phase difference detecting method of vibrating force generating device | |
| JPS533201A (en) | Forcus servo system for light beam | |
| JPS5667411A (en) | Stationary servo-device | |
| JPS52152705A (en) | Optical reproducing system | |
| JPS57212405A (en) | Focusing method for projection exposure | |
| JPS52153454A (en) | Automatic focus controlling apparatus | |
| JPS57150826A (en) | Lens motor driving system of auto-focusing camera |