FR2658320B1 - PHOTOGRAPHIC APPARATUS HAVING A ZOOM HALF-EXPOSURE FUNCTION. - Google Patents

PHOTOGRAPHIC APPARATUS HAVING A ZOOM HALF-EXPOSURE FUNCTION.

Info

Publication number
FR2658320B1
FR2658320B1 FR9101760A FR9101760A FR2658320B1 FR 2658320 B1 FR2658320 B1 FR 2658320B1 FR 9101760 A FR9101760 A FR 9101760A FR 9101760 A FR9101760 A FR 9101760A FR 2658320 B1 FR2658320 B1 FR 2658320B1
Authority
FR
France
Prior art keywords
zoom
photographic apparatus
exposure function
exposure
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.)
Expired - Fee Related
Application number
FR9101760A
Other languages
French (fr)
Other versions
FR2658320A1 (en
Inventor
Shinsuke Kohmoto
Tomoaki Itabashi
Isao Soshi
Tatsuhide Takebayashi
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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
Priority claimed from JP3300790A external-priority patent/JPH03236025A/en
Priority claimed from JP3300590A external-priority patent/JPH03236023A/en
Priority claimed from JP3300490A external-priority patent/JPH03236022A/en
Priority claimed from JP3300890A external-priority patent/JPH03236026A/en
Priority claimed from JP3301590A external-priority patent/JP2921898B2/en
Priority claimed from JP2033003A external-priority patent/JP2859352B2/en
Priority claimed from JP3300690A external-priority patent/JPH03236024A/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2658320A1 publication Critical patent/FR2658320A1/en
Application granted granted Critical
Publication of FR2658320B1 publication Critical patent/FR2658320B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and aperture
    • 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
    • G02B7/102—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 controlled by a microcomputer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Exposure Control For Cameras (AREA)
FR9101760A 1990-02-14 1991-02-14 PHOTOGRAPHIC APPARATUS HAVING A ZOOM HALF-EXPOSURE FUNCTION. Expired - Fee Related FR2658320B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP3300590A JPH03236023A (en) 1990-02-14 1990-02-14 Camera with inter-exposure zooming function
JP3300490A JPH03236022A (en) 1990-02-14 1990-02-14 Camera with inter-exposure zooming function
JP3300890A JPH03236026A (en) 1990-02-14 1990-02-14 Camera with inter-exposure zooming function
JP3301590A JP2921898B2 (en) 1990-02-14 1990-02-14 Camera with zooming mode between exposures
JP2033003A JP2859352B2 (en) 1990-02-14 1990-02-14 Camera with zoom function during exposure
JP3300790A JPH03236025A (en) 1990-02-14 1990-02-14 Camera with inter-exposure zooming function
JP3300690A JPH03236024A (en) 1990-02-14 1990-02-14 Camera with inter-exposure zooming function

Publications (2)

Publication Number Publication Date
FR2658320A1 FR2658320A1 (en) 1991-08-16
FR2658320B1 true FR2658320B1 (en) 1994-08-26

Family

ID=27564338

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9101760A Expired - Fee Related FR2658320B1 (en) 1990-02-14 1991-02-14 PHOTOGRAPHIC APPARATUS HAVING A ZOOM HALF-EXPOSURE FUNCTION.

Country Status (3)

Country Link
DE (1) DE4104558C2 (en)
FR (1) FR2658320B1 (en)
GB (1) GB2241073B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04348330A (en) * 1991-05-21 1992-12-03 Asahi Optical Co Ltd Inter-exposure zoom controller
GB2256941B (en) * 1991-05-21 1994-08-03 Asahi Optical Co Ltd Power lens and camera system
US5396306A (en) * 1991-05-21 1995-03-07 Asahi Kogaku Kogyo Kabushiki Kaisha Power lens and camera system
US5450156A (en) * 1991-05-21 1995-09-12 Asahi Kogaku Kogyo Kabushiki Kaisha Power zoom lens and camera having same
GB2271646B (en) * 1992-10-19 1996-12-04 Asahi Optical Co Ltd An optical camera and a method of conducting a focusing operation therein
GB2294121B (en) * 1992-10-19 1996-12-04 Asahi Optical Co Ltd Motor driven zoom lens camera
DE4331850A1 (en) * 1993-09-20 1995-03-30 Deere & Co Electronic circuit for an electromagnetic clutch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504965A (en) * 1966-04-28 1970-04-07 Argus Inc Portable motion picture camera
US4206982A (en) * 1977-09-16 1980-06-10 Olympus Optical Co., Ltd. Camera
DE2937246A1 (en) * 1978-11-07 1980-05-08 Bolex Int Sa CAMERA
JPH0723949B2 (en) * 1985-04-02 1995-03-15 キヤノン株式会社 camera
JPS6319830U (en) * 1986-07-18 1988-02-09
US4899190A (en) * 1987-05-31 1990-02-06 Ricoh Company, Ltd. Zooming optical system control device

Also Published As

Publication number Publication date
DE4104558A1 (en) 1991-08-22
GB2241073B (en) 1994-07-27
GB2241073A (en) 1991-08-21
DE4104558C2 (en) 1996-09-19
FR2658320A1 (en) 1991-08-16
GB9103199D0 (en) 1991-04-03

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20061031