FR2283457A1 - Appareil de mise au point optique - Google Patents
Appareil de mise au point optiqueInfo
- Publication number
- FR2283457A1 FR2283457A1 FR7525899A FR7525899A FR2283457A1 FR 2283457 A1 FR2283457 A1 FR 2283457A1 FR 7525899 A FR7525899 A FR 7525899A FR 7525899 A FR7525899 A FR 7525899A FR 2283457 A1 FR2283457 A1 FR 2283457A1
- Authority
- FR
- France
- Prior art keywords
- focusing device
- optical focusing
- optical
- focusing
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
- G02B7/365—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals by analysis of the spatial frequency components of the image
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/500,869 US3941996A (en) | 1974-08-27 | 1974-08-27 | Automatic focus apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2283457A1 true FR2283457A1 (fr) | 1976-03-26 |
Family
ID=23991278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7525899A Withdrawn FR2283457A1 (fr) | 1974-08-27 | 1975-08-21 | Appareil de mise au point optique |
Country Status (6)
Country | Link |
---|---|
US (1) | US3941996A (fr) |
JP (1) | JPS5146935A (fr) |
BE (1) | BE832654A (fr) |
CA (1) | CA1039094A (fr) |
FR (1) | FR2283457A1 (fr) |
GB (1) | GB1500385A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5172329A (en) * | 1974-12-19 | 1976-06-23 | Minolta Camera Kk | Jidoshotenkenshutsusochi |
US4132948A (en) * | 1977-03-17 | 1979-01-02 | Teradyne, Inc. | Test fixture using stock printed circuit board having test pins mounted thereon |
JPS5590934A (en) * | 1978-12-29 | 1980-07-10 | Nippon Kogaku Kk <Nikon> | Operating device of camera having automatic focusing device |
JPS5793307A (en) * | 1980-12-02 | 1982-06-10 | Olympus Optical Co Ltd | Automatic focusing system |
DD234340A3 (de) * | 1984-05-02 | 1986-04-02 | Zeiss Jena Veb Carl | Automatische fokussiereinrichtung |
IT1201256B (it) * | 1985-03-19 | 1989-01-27 | Consiglio Nazionale Ricerche | Perfezionamento nei dispositivi per la messa a fuoco automatica dei sistemi ottici,in particolare microspopi e strumenti per l'acquisizione elettronica di immagini microscopiche |
US5210565A (en) * | 1991-06-21 | 1993-05-11 | Eastman Kodak Company | Oscillating pupil autofocus method and apparatus |
US5648652A (en) * | 1993-09-22 | 1997-07-15 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical focus evaluation and focus adjustment methods, focus evaluation and focus adjustment apparatus, and screen apparatus |
US7800079B2 (en) * | 2003-12-22 | 2010-09-21 | Asml Netherlands B.V. | Assembly for detection of radiation flux and contamination of an optical component, lithographic apparatus including such an assembly and device manufacturing method |
CN103765877B (zh) * | 2011-06-03 | 2016-06-15 | 汤姆逊许可公司 | 激光投影仪中的可变和交错扫描 |
JP2014518465A (ja) | 2011-06-03 | 2014-07-28 | トムソン ライセンシング | レーザー・プロジェクターにおける可変およびぎざぎざ付きのスキャン |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555280A (en) * | 1966-04-19 | 1971-01-12 | Hycon Mfg Co | Automatic focus sensor and control |
US3541335A (en) * | 1967-11-22 | 1970-11-17 | Control Data Corp | Radiation star detector with coded optical scanner |
US3538334A (en) * | 1968-01-24 | 1970-11-03 | Hycon Mfg Co | Automatic focusing device with a photosensitive error detector |
US3700902A (en) * | 1971-01-13 | 1972-10-24 | Itek Corp | Optical information processing using variable electro-optic spatial filter |
-
1974
- 1974-08-27 US US05/500,869 patent/US3941996A/en not_active Expired - Lifetime
-
1975
- 1975-04-28 CA CA225,609A patent/CA1039094A/fr not_active Expired
- 1975-05-14 GB GB20249/75A patent/GB1500385A/en not_active Expired
- 1975-08-19 JP JP50100557A patent/JPS5146935A/ja active Pending
- 1975-08-21 FR FR7525899A patent/FR2283457A1/fr not_active Withdrawn
- 1975-08-22 BE BE159384A patent/BE832654A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
CA1039094A (fr) | 1978-09-26 |
BE832654A (fr) | 1975-12-16 |
US3941996A (en) | 1976-03-02 |
JPS5146935A (en) | 1976-04-22 |
GB1500385A (en) | 1978-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |