FR2404868B1 - - Google Patents

Info

Publication number
FR2404868B1
FR2404868B1 FR7828216A FR7828216A FR2404868B1 FR 2404868 B1 FR2404868 B1 FR 2404868B1 FR 7828216 A FR7828216 A FR 7828216A FR 7828216 A FR7828216 A FR 7828216A FR 2404868 B1 FR2404868 B1 FR 2404868B1
Authority
FR
France
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.)
Expired
Application number
FR7828216A
Other languages
French (fr)
Other versions
FR2404868A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polaroid Corp
Original Assignee
Polaroid Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of FR2404868A1 publication Critical patent/FR2404868A1/fr
Application granted granted Critical
Publication of FR2404868B1 publication Critical patent/FR2404868B1/fr
Granted legal-status Critical Current

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
    • G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)
  • Shutters For Cameras (AREA)
FR7828216A 1977-10-03 1978-10-03 Systeme d'objectif a focale variable a commande manuelle et automatique Granted FR2404868A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83858177A 1977-10-03 1977-10-03

Publications (2)

Publication Number Publication Date
FR2404868A1 FR2404868A1 (fr) 1979-04-27
FR2404868B1 true FR2404868B1 (enrdf_load_stackoverflow) 1984-08-10

Family

ID=25277484

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828216A Granted FR2404868A1 (fr) 1977-10-03 1978-10-03 Systeme d'objectif a focale variable a commande manuelle et automatique

Country Status (6)

Country Link
JP (1) JPS5461525A (enrdf_load_stackoverflow)
CA (1) CA1122454A (enrdf_load_stackoverflow)
DE (1) DE2842851B2 (enrdf_load_stackoverflow)
FR (1) FR2404868A1 (enrdf_load_stackoverflow)
GB (1) GB2005852B (enrdf_load_stackoverflow)
IE (1) IE47956B1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573026A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Automatic-manual focus controllable lens-barrel
JPS5573025A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Changeover device of automatic-manual focus controllable lens-barrel
JPS5619033A (en) * 1979-07-25 1981-02-23 Canon Inc Automatic focus control unit
JPS5648620A (en) * 1979-09-28 1981-05-01 Nippon Seimitsu Kogyo Kk Automatic focus controlling mechanism of camera
JPS62201738U (enrdf_load_stackoverflow) * 1986-06-13 1987-12-23

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400602A (de) * 1961-07-29 1965-10-15 Agfa Ag Objektiv mit veränderbarer Brennweite, mit einer Vorrichtung zur wahlweisen Brennweitenverstellung von Hand und durch einen Motor
US3522764A (en) * 1968-03-25 1970-08-04 Polaroid Corp Rangefinding and focusing system for photographic cameras and the like

Also Published As

Publication number Publication date
GB2005852B (en) 1982-03-17
JPS5751084B2 (enrdf_load_stackoverflow) 1982-10-30
IE781972L (en) 1979-04-03
IE47956B1 (en) 1984-08-08
FR2404868A1 (fr) 1979-04-27
GB2005852A (en) 1979-04-25
JPS5461525A (en) 1979-05-17
DE2842851C3 (enrdf_load_stackoverflow) 1980-07-17
DE2842851A1 (de) 1979-04-05
DE2842851B2 (de) 1979-10-31
CA1122454A (en) 1982-04-27

Similar Documents

Publication Publication Date Title
JPS5751084B2 (enrdf_load_stackoverflow)
FR2376657B1 (enrdf_load_stackoverflow)
AU495917B2 (enrdf_load_stackoverflow)
AU71461S (enrdf_load_stackoverflow)
BE851449A (enrdf_load_stackoverflow)
BE865722A (enrdf_load_stackoverflow)
BE866391A (enrdf_load_stackoverflow)
BE868323A (enrdf_load_stackoverflow)
BE870787A (enrdf_load_stackoverflow)
BE871419A (enrdf_load_stackoverflow)
BE871991A (enrdf_load_stackoverflow)
BE872973A (enrdf_load_stackoverflow)
BE873002A (enrdf_load_stackoverflow)
BG23438A1 (enrdf_load_stackoverflow)
BG23462A1 (enrdf_load_stackoverflow)
BG24331A1 (enrdf_load_stackoverflow)
BG24713A1 (enrdf_load_stackoverflow)
BG25808A1 (enrdf_load_stackoverflow)
BG25809A1 (enrdf_load_stackoverflow)
BG25810A1 (enrdf_load_stackoverflow)
BG25811A1 (enrdf_load_stackoverflow)
BG25812A1 (enrdf_load_stackoverflow)
BG25813A1 (enrdf_load_stackoverflow)
BG25815A1 (enrdf_load_stackoverflow)
BG25819A1 (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
ST Notification of lapse