FR2288330A1 - Dispositif de commande automatique du diaphragme pour objectif a focale variable - Google Patents

Dispositif de commande automatique du diaphragme pour objectif a focale variable

Info

Publication number
FR2288330A1
FR2288330A1 FR7531881A FR7531881A FR2288330A1 FR 2288330 A1 FR2288330 A1 FR 2288330A1 FR 7531881 A FR7531881 A FR 7531881A FR 7531881 A FR7531881 A FR 7531881A FR 2288330 A1 FR2288330 A1 FR 2288330A1
Authority
FR
France
Prior art keywords
control device
focus lens
variable focus
diaphragm control
automatic diaphragm
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
FR7531881A
Other languages
English (en)
Other versions
FR2288330B1 (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.)
Fujinon Corp
Original Assignee
Fuji Photo Optical 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Publication of FR2288330A1 publication Critical patent/FR2288330A1/fr
Application granted granted Critical
Publication of FR2288330B1 publication Critical patent/FR2288330B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • G03B9/07—Diaphragms with means for presetting the diaphragm

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Exposure Control For Cameras (AREA)
  • Diaphragms For Cameras (AREA)
FR7531881A 1974-10-17 1975-10-17 Dispositif de commande automatique du diaphragme pour objectif a focale variable Granted FR2288330A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49118643A JPS5926935B2 (ja) 1974-10-17 1974-10-17 焦点距離変倍部を有するレンズにおける絞り補正機構

Publications (2)

Publication Number Publication Date
FR2288330A1 true FR2288330A1 (fr) 1976-05-14
FR2288330B1 FR2288330B1 (fr) 1978-12-08

Family

ID=14741612

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7531881A Granted FR2288330A1 (fr) 1974-10-17 1975-10-17 Dispositif de commande automatique du diaphragme pour objectif a focale variable

Country Status (5)

Country Link
US (1) US4060756A (fr)
JP (1) JPS5926935B2 (fr)
DE (1) DE2546455C3 (fr)
FR (1) FR2288330A1 (fr)
GB (1) GB1494011A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330870A (en) * 1980-09-05 1982-05-18 Datapoint Corporation Optical data link
US5146259A (en) * 1988-06-30 1992-09-08 Asahi Kogaku Kogyo Kabushiki Kaisha Electronically controlled camera including automatic shutter speed changing apparatus
JP2796823B2 (ja) * 1989-02-10 1998-09-10 旭光学工業株式会社 電子制御カメラ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2393407A (en) * 1944-06-15 1946-01-22 Automatic Elect Lab Electrically controlled camera diaphragm
US2393408A (en) * 1944-07-01 1946-01-22 Automatic Elect Lab Electrically controlled iris diaphragm
US3405335A (en) * 1963-07-04 1968-10-08 Hitachi Ltd Zero-drift compensation device for self-balancing motor driven instruments
GB1203057A (en) * 1967-08-07 1970-08-26 Rank Organisation Ltd Improvements relating to camera systems
US3743912A (en) * 1970-10-16 1973-07-03 Canon Kk Servo-control system
US3824439A (en) * 1973-02-14 1974-07-16 Honeywell Inc Electronic stroke adjust for motor control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
GB1494011A (en) 1977-12-07
FR2288330B1 (fr) 1978-12-08
DE2546455B2 (de) 1977-10-27
DE2546455A1 (de) 1976-04-29
DE2546455C3 (de) 1979-06-21
US4060756A (en) 1977-11-29
JPS5926935B2 (ja) 1984-07-02
JPS5145527A (en) 1976-04-19

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Legal Events

Date Code Title Description
ST Notification of lapse