FR2347696A1 - Objectif a longueur focale variable pour appareils de prise de vues photographiques - Google Patents

Objectif a longueur focale variable pour appareils de prise de vues photographiques

Info

Publication number
FR2347696A1
FR2347696A1 FR7710766A FR7710766A FR2347696A1 FR 2347696 A1 FR2347696 A1 FR 2347696A1 FR 7710766 A FR7710766 A FR 7710766A FR 7710766 A FR7710766 A FR 7710766A FR 2347696 A1 FR2347696 A1 FR 2347696A1
Authority
FR
France
Prior art keywords
focal length
length lens
variable focal
photographic cameras
photographic
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
Application number
FR7710766A
Other languages
English (en)
French (fr)
Other versions
FR2347696B1 (enEXAMPLES
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.)
Elmo Co Ltd
Original Assignee
Elmo Co Ltd
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 Elmo Co Ltd filed Critical Elmo Co Ltd
Publication of FR2347696A1 publication Critical patent/FR2347696A1/fr
Application granted granted Critical
Publication of FR2347696B1 publication Critical patent/FR2347696B1/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
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Structure And Mechanism Of Cameras (AREA)
FR7710766A 1976-04-09 1977-04-08 Objectif a longueur focale variable pour appareils de prise de vues photographiques Granted FR2347696A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976045012U JPS5638482Y2 (enEXAMPLES) 1976-04-09 1976-04-09

Publications (2)

Publication Number Publication Date
FR2347696A1 true FR2347696A1 (fr) 1977-11-04
FR2347696B1 FR2347696B1 (enEXAMPLES) 1980-08-08

Family

ID=12707438

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710766A Granted FR2347696A1 (fr) 1976-04-09 1977-04-08 Objectif a longueur focale variable pour appareils de prise de vues photographiques

Country Status (9)

Country Link
US (2) US4162822A (enEXAMPLES)
JP (1) JPS5638482Y2 (enEXAMPLES)
AT (1) AT353025B (enEXAMPLES)
CA (1) CA1078236A (enEXAMPLES)
CH (1) CH618019A5 (enEXAMPLES)
DE (1) DE2715780C3 (enEXAMPLES)
FR (1) FR2347696A1 (enEXAMPLES)
GB (1) GB1515102A (enEXAMPLES)
IT (1) IT1085150B (enEXAMPLES)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024923B2 (ja) * 1978-04-21 1985-06-15 旭光学工業株式会社 ズ−ムレンズの合焦装置
JPS55133006A (en) * 1979-04-04 1980-10-16 Asahi Optical Co Ltd Close-up photographing changeover device of zoom lens barrel
JPS5680010A (en) * 1979-12-04 1981-07-01 Asahi Optical Co Ltd Cam groove for displacement lens
JPS56164222U (enEXAMPLES) * 1980-05-12 1981-12-05
JPS5725310U (enEXAMPLES) * 1980-07-21 1982-02-09
JPS5764202A (en) * 1980-10-08 1982-04-19 Nippon Kogaku Kk <Nikon> Macrozoom lens barrel
JPS5766425A (en) * 1980-10-11 1982-04-22 Nippon Kogaku Kk <Nikon> Macrophotography mechanism of zoom lens
JPS5818212U (ja) * 1981-07-28 1983-02-04 キノ精密工業株式会社 ズ−ムレンズ鏡筒に於けるロツク機構
JPS5840708U (ja) * 1981-09-11 1983-03-17 キノ精密工業株式会社 ズ−ムレンズ鏡筒に於けるロツク機構
USD275685S (en) 1982-03-26 1984-09-25 OMA Mfg. Co., Ltd. Electromotive camera lens or similar article
JPS6074115U (ja) * 1983-10-28 1985-05-24 キヤノン株式会社 ズ−ムレンズ鏡胴
US4948227A (en) * 1987-10-12 1990-08-14 Asahi Kogaku Kogyo K.K. Apparatus for operatively connecting cam ring and associated member actuated thereby
JP2527731Y2 (ja) * 1989-10-02 1997-03-05 株式会社ニコン 焦点調節ロック装置を有する双眼鏡
US5194987A (en) * 1991-09-03 1993-03-16 Bausch & Lomb Incorporated Automatic power change mechanism for riflescopes or the like
US5477387A (en) * 1993-02-26 1995-12-19 Nikon Corporation Zoom lens barrel with focus interlocking ring
DE20207284U1 (de) 2002-05-08 2002-08-08 Leica Microsystems Ag, Heerbrugg Vorrichtung zur wahlweisen Einstellung von Zoombereichen
TWI471628B (zh) * 2011-12-07 2015-02-01 Ability Entpr Co Ltd 鏡頭機構
US20240337812A1 (en) * 2023-04-10 2024-10-10 Gopro, Inc. Adjustable-focus optical assemblies for image capture devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796001A (en) * 1957-06-18 Fixed focus variable magnification op-

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578006Y2 (enEXAMPLES) * 1971-07-05 1982-02-16
US3970368A (en) * 1973-06-14 1976-07-20 Karl Vockenhuber Optical zooming lens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796001A (en) * 1957-06-18 Fixed focus variable magnification op-

Also Published As

Publication number Publication date
FR2347696B1 (enEXAMPLES) 1980-08-08
JPS52135828U (enEXAMPLES) 1977-10-15
CH618019A5 (enEXAMPLES) 1980-06-30
GB1515102A (en) 1978-06-21
DE2715780C3 (de) 1980-01-24
JPS5638482Y2 (enEXAMPLES) 1981-09-08
ATA245677A (de) 1979-03-15
US4162822A (en) 1979-07-31
AT353025B (de) 1979-10-25
US4229074A (en) 1980-10-21
DE2715780A1 (de) 1977-10-13
DE2715780B2 (de) 1979-05-10
CA1078236A (en) 1980-05-27
IT1085150B (it) 1985-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse