FR2370992A1 - Dispositif de mise au point - Google Patents

Dispositif de mise au point

Info

Publication number
FR2370992A1
FR2370992A1 FR7734038A FR7734038A FR2370992A1 FR 2370992 A1 FR2370992 A1 FR 2370992A1 FR 7734038 A FR7734038 A FR 7734038A FR 7734038 A FR7734038 A FR 7734038A FR 2370992 A1 FR2370992 A1 FR 2370992A1
Authority
FR
France
Prior art keywords
adjustment
region
adjusting
lens element
lens
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
FR7734038A
Other languages
English (en)
Other versions
FR2370992B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2370992A1 publication Critical patent/FR2370992A1/fr
Application granted granted Critical
Publication of FR2370992B1 publication Critical patent/FR2370992B1/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
    • G02B7/105—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 with movable lens means specially adapted for focusing at close distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne un dispositif de réglage d'au moins un élément de lentille d'un objectif pancratique de prise de vues ou de projection, dispositif définissant une région de réglage dans laquelle l'élément de lentille peut coulisser suivant l'axe optique de l'objectif. Le dispositif est remarquable par le fait que le dispositif de réglage comporte au moins une deuxième région de réglage qui maintient constant le réglage momentané de mise au point et/ou de distance focale, prédéterminé par la première région de réglage. Application notamment aux caméras cinématographiques.
FR7734038A 1976-11-15 1977-11-10 Dispositif de mise au point Granted FR2370992A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT846976A AT345581B (de) 1976-11-15 1976-11-15 Einstelleinrichtung fuer ein pankratisches objektiv

Publications (2)

Publication Number Publication Date
FR2370992A1 true FR2370992A1 (fr) 1978-06-09
FR2370992B1 FR2370992B1 (fr) 1984-02-24

Family

ID=3605727

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734038A Granted FR2370992A1 (fr) 1976-11-15 1977-11-10 Dispositif de mise au point

Country Status (5)

Country Link
US (1) US4179191A (fr)
JP (1) JPS5391729A (fr)
AT (1) AT345581B (fr)
DE (1) DE2750580A1 (fr)
FR (1) FR2370992A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567716A (en) * 1978-11-17 1980-05-22 Canon Inc Lens structural body
JPS55134809A (en) * 1979-04-06 1980-10-21 Canon Inc Lens barrel of closeup photographable zoom lens
JPS57186872A (en) * 1981-05-13 1982-11-17 Hitachi Ltd Auto-focusing device of video camera
US4812030A (en) * 1985-01-03 1989-03-14 The Boeing Company Catoptric zoom optical device
US5774749A (en) * 1985-05-14 1998-06-30 Canon Kabushiki Kaisha Camera having a magnification change-over device
JPH0455014U (fr) * 1990-09-17 1992-05-12
US5353081A (en) * 1993-05-27 1994-10-04 Eastman Kodak Company Camera element position detecting assemblage
CN1069974C (zh) * 1995-02-08 2001-08-22 佳能株式会社 透镜筒
JPH10170801A (ja) * 1996-12-12 1998-06-26 Asahi Optical Co Ltd ズームレンズ鏡筒の駆動装置
US6714359B2 (en) * 2001-10-31 2004-03-30 Pentax Corporation Lens barrel and cam ring
US6879445B2 (en) * 2002-10-25 2005-04-12 Pentax Corporation Power/manual lens barrel having a manual operating ring
TWI262029B (en) * 2005-06-03 2006-09-11 Coretronic Corp Device and method for controlling display

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1422095B1 (de) * 1961-07-29 1969-09-04 Agfa Ag Gummilinsenobjektiv mit Vorrichtung zur wahlweisen Brennweitenverstellung von Hand und durch Motor
DE2427549A1 (de) * 1973-06-14 1975-01-09 Hauser Raimund Optisches system
DE2458893A1 (de) * 1973-12-14 1975-06-19 Minolta Camera Kk Varioobjektiv
US4078857A (en) * 1975-08-06 1978-03-14 Karl Vockenhuber Optical system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1422095B1 (de) * 1961-07-29 1969-09-04 Agfa Ag Gummilinsenobjektiv mit Vorrichtung zur wahlweisen Brennweitenverstellung von Hand und durch Motor
DE2427549A1 (de) * 1973-06-14 1975-01-09 Hauser Raimund Optisches system
US3970368A (en) * 1973-06-14 1976-07-20 Karl Vockenhuber Optical zooming lens
DE2458893A1 (de) * 1973-12-14 1975-06-19 Minolta Camera Kk Varioobjektiv
US3972056A (en) * 1973-12-14 1976-07-27 Minolta Camera Kabushiki Kaisha Varifocal lens assembly
US4078857A (en) * 1975-08-06 1978-03-14 Karl Vockenhuber Optical system

Also Published As

Publication number Publication date
ATA846976A (de) 1978-01-15
DE2750580A1 (de) 1978-05-18
FR2370992B1 (fr) 1984-02-24
US4179191A (en) 1979-12-18
AT345581B (de) 1978-09-25
JPS5391729A (en) 1978-08-11

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse