NL7216306A - - Google Patents
Info
- Publication number
- NL7216306A NL7216306A NL7216306A NL7216306A NL7216306A NL 7216306 A NL7216306 A NL 7216306A NL 7216306 A NL7216306 A NL 7216306A NL 7216306 A NL7216306 A NL 7216306A NL 7216306 A NL7216306 A NL 7216306A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/40—Optical focusing aids
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7216306A NL7216306A (nl) | 1972-12-01 | 1972-12-01 | |
ZA00738817A ZA738817B (en) | 1972-12-01 | 1973-11-19 | Optical system for imaging an object, the focussing being maintained independent of a variation in the distance between the object plane and the image plane |
US418061A US3911209A (en) | 1972-12-01 | 1973-11-21 | Optical system for imaging an object, the focussing being maintained independent of a variation in the distance between the object plane and the image plane |
AU62882/73A AU6288273A (en) | 1972-12-01 | 1973-11-26 | Optical imaging system |
GB5517973A GB1455460A (en) | 1972-12-01 | 1973-11-28 | Optical system |
FR7342313A FR2209460A5 (nl) | 1972-12-01 | 1973-11-28 | |
JP48134005A JPS4989549A (nl) | 1972-12-01 | 1973-11-28 | |
CH1670473A CH567273A5 (nl) | 1972-12-01 | 1973-11-28 | |
DE2359171A DE2359171A1 (de) | 1972-12-01 | 1973-11-28 | Optisches system zur abbildung eines gegenstandes unter beibehaltung der scharfeinstellung, unabhaengig von einer aenderung in dem abstand zwischen der gegenstandsebene und der bildebene |
IT31843/73A IT1002057B (it) | 1972-12-01 | 1973-11-29 | Sistema ottico per proittare l im magine di un oggetto su un piano la messa a fuoco essendi matenuta indipendente da qualsiasi variazio ne nella lunghezza del cammino ottico fra il piano dell oggetto e il piano dell immagine |
BE138344A BE808010A (fr) | 1972-12-01 | 1973-11-29 | Systeme optique |
ES420968A ES420968A1 (es) | 1972-12-01 | 1973-11-29 | Sistema optico para formar la imagen de un objeto en un plano. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7216306A NL7216306A (nl) | 1972-12-01 | 1972-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7216306A true NL7216306A (nl) | 1974-06-05 |
Family
ID=19817456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7216306A NL7216306A (nl) | 1972-12-01 | 1972-12-01 |
Country Status (12)
Country | Link |
---|---|
US (1) | US3911209A (nl) |
JP (1) | JPS4989549A (nl) |
AU (1) | AU6288273A (nl) |
BE (1) | BE808010A (nl) |
CH (1) | CH567273A5 (nl) |
DE (1) | DE2359171A1 (nl) |
ES (1) | ES420968A1 (nl) |
FR (1) | FR2209460A5 (nl) |
GB (1) | GB1455460A (nl) |
IT (1) | IT1002057B (nl) |
NL (1) | NL7216306A (nl) |
ZA (1) | ZA738817B (nl) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4322838A (en) * | 1980-02-11 | 1982-03-30 | Hewlett-Packard Company | Dynamic focus adjustment for transmissive or reflective optical disc memory systems |
US4376303A (en) * | 1980-12-19 | 1983-03-08 | Rca Corporation | Quasi-zoom lens optical focus sensor |
NL8105579A (nl) * | 1981-12-11 | 1983-07-01 | Philips Nv | Optisch fokusfoutdetektiestelsel. |
US4712887A (en) * | 1985-12-20 | 1987-12-15 | Dazar Corporation | Optical system for fast access optical data storage device |
DE102006012388A1 (de) | 2005-10-20 | 2007-04-26 | Carl Zeiss Surgical Gmbh | Mikroskopiesystem |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2171360A (en) * | 1935-12-20 | 1939-08-29 | Barr & Stroud Ltd | Telescope observation instrument |
US2391430A (en) * | 1942-12-02 | 1945-12-25 | Joseph J Macek | Camera and projector |
US2398276A (en) * | 1945-02-05 | 1946-04-09 | Eastman Kodak Co | Variable power telescope |
US2552238A (en) * | 1948-12-09 | 1951-05-08 | Eastman Kodak Co | Profile projector and optical comparator |
US3419321A (en) * | 1966-02-24 | 1968-12-31 | Lear Siegler Inc | Laser optical apparatus for cutting holes |
US3506329A (en) * | 1967-02-23 | 1970-04-14 | Weaver Co W R | Telescopic sight with adjustable negative and erector lenses |
CH461149A (de) * | 1967-05-09 | 1968-08-15 | Conradi G Ag | Einrichtung an einer Zeichenmaschine oder einem Koordinatographen zur mindestens angenähert fehlerfreien Auftragung von Punkten, Linien und Symbolen auf eine zur Führungsebene des Arbeitswagens nicht parallele und/oder nicht plane photographische Schicht |
US3623790A (en) * | 1969-12-31 | 1971-11-30 | Singer General Precision | Capacitance controlled automatic focusing system |
-
1972
- 1972-12-01 NL NL7216306A patent/NL7216306A/xx unknown
-
1973
- 1973-11-19 ZA ZA00738817A patent/ZA738817B/xx unknown
- 1973-11-21 US US418061A patent/US3911209A/en not_active Expired - Lifetime
- 1973-11-26 AU AU62882/73A patent/AU6288273A/en not_active Expired
- 1973-11-28 CH CH1670473A patent/CH567273A5/xx not_active IP Right Cessation
- 1973-11-28 JP JP48134005A patent/JPS4989549A/ja active Pending
- 1973-11-28 FR FR7342313A patent/FR2209460A5/fr not_active Expired
- 1973-11-28 DE DE2359171A patent/DE2359171A1/de active Pending
- 1973-11-28 GB GB5517973A patent/GB1455460A/en not_active Expired
- 1973-11-29 ES ES420968A patent/ES420968A1/es not_active Expired
- 1973-11-29 BE BE138344A patent/BE808010A/xx unknown
- 1973-11-29 IT IT31843/73A patent/IT1002057B/it active
Also Published As
Publication number | Publication date |
---|---|
FR2209460A5 (nl) | 1974-06-28 |
IT1002057B (it) | 1976-05-20 |
ES420968A1 (es) | 1976-04-01 |
DE2359171A1 (de) | 1974-06-06 |
BE808010A (fr) | 1974-05-29 |
GB1455460A (en) | 1976-11-10 |
ZA738817B (en) | 1975-06-25 |
JPS4989549A (nl) | 1974-08-27 |
US3911209A (en) | 1975-10-07 |
CH567273A5 (nl) | 1975-09-30 |
AU6288273A (en) | 1975-05-29 |