GB2221114B - Autofocus camera - Google Patents

Autofocus camera

Info

Publication number: GB2221114B
Authority: GB; United Kingdom
Prior art keywords: autofocus camera; autofocus; camera
Prior art date: 1988-06-30
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

GB8915147A

Other versions

GB2221114A (en

Inventor

Takeo Kobayashi

Yasushi Tabata

Norio Numako

Katsutoshi Nagai

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.)

1988-06-30

Filing date

1989-06-30

Publication date

1993-02-17

1989-06-30 Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd

1990-01-24 Publication of GB2221114A publication Critical patent/GB2221114A/en

1993-02-17 Application granted granted Critical

1993-02-17 Publication of GB2221114B publication Critical patent/GB2221114B/en

2009-06-30 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- 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
- G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
- G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
- 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
- G03B43/00—Testing correct operation of photographic apparatus or parts thereof

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Focusing (AREA)
Stroboscope Apparatuses (AREA)
Indication In Cameras, And Counting Of Exposures (AREA)

GB8915147A 1988-06-30 1989-06-30 Autofocus camera Expired - Fee Related GB2221114B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP1988087122U JP2536236Y2 (en)	1988-06-30	1988-06-30	Camera display device and camera inspection jig

Publications (2)

Publication Number	Publication Date
GB2221114A GB2221114A (en)	1990-01-24
GB2221114B true GB2221114B (en)	1993-02-17

Family

ID=13906152

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8915147A Expired - Fee Related GB2221114B (en)	1988-06-30	1989-06-30	Autofocus camera

Country Status (4)

Country	Link
JP (1)	JP2536236Y2 (en)
DE (1)	DE3921643C2 (en)
FR (2)	FR2633735B1 (en)
GB (1)	GB2221114B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2020051A (en) *	1978-04-25	1979-11-07	Polaroid Corp	Cameras with rangefinders
GB1569902A (en) *	1976-10-05	1980-06-25	Asahi Optical Co Ltd	Electrically controlled camera
US4436397A (en) *	1981-05-28	1984-03-13	Asahi Kogaku Kogyo Kabushiki Kaisha	Photographic information display systems for use in photographic cameras
GB2170320A (en) *	1984-12-28	1986-07-30	Canon Kk	Camera flash
GB2180074A (en) *	1985-09-06	1987-03-18	Asahi Optical Co Ltd	Camera testing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS55110229A (en) *	1979-02-16	1980-08-25	Asahi Optical Co Ltd	Automatic focus indicator of camera
JPS5738402A (en) *	1980-08-19	1982-03-03	Canon Inc	Display device of automatic focal point adjuster
US4462669A (en) *	1981-08-18	1984-07-31	Canon Kabushiki Kaisha	Self-timer device for camera
JPS59116729A (en) *	1982-12-24	1984-07-05	Sanpack:Kk	Light source for photography
JPH0625844B2 (en) *	1983-05-26	1994-04-06	キヤノン株式会社	camera
US4711547A (en) *	1984-11-28	1987-12-08	Canon Kabushiki Kaisha	Display device
JPS6258233A (en) *	1985-09-09	1987-03-13	Fuji Photo Optical Co Ltd	Actuation displaying device of camera
JPH06329741A (en) *	1993-05-26	1994-11-29	Nippon Kayaku Co Ltd	Resin, epoxy resin, its production, resin composition and cured product of said composition

1988
- 1988-06-30 JP JP1988087122U patent/JP2536236Y2/en not_active Expired - Lifetime
1989
- 1989-06-30 FR FR8908785A patent/FR2633735B1/fr not_active Expired - Fee Related
- 1989-06-30 GB GB8915147A patent/GB2221114B/en not_active Expired - Fee Related
- 1989-06-30 DE DE19893921643 patent/DE3921643C2/en not_active Expired - Fee Related
1992
- 1992-09-10 FR FR9210790A patent/FR2681154A1/en active Granted

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1569902A (en) *	1976-10-05	1980-06-25	Asahi Optical Co Ltd	Electrically controlled camera
GB2020051A (en) *	1978-04-25	1979-11-07	Polaroid Corp	Cameras with rangefinders
US4436397A (en) *	1981-05-28	1984-03-13	Asahi Kogaku Kogyo Kabushiki Kaisha	Photographic information display systems for use in photographic cameras
GB2170320A (en) *	1984-12-28	1986-07-30	Canon Kk	Camera flash
GB2180074A (en) *	1985-09-06	1987-03-18	Asahi Optical Co Ltd	Camera testing

Also Published As

Publication number	Publication date
DE3921643C2 (en)	2001-02-15
JP2536236Y2 (en)	1997-05-21
FR2681154A1 (en)	1993-03-12
FR2633735A1 (en)	1990-01-05
FR2681154B1 (en)	1994-12-02
GB2221114A (en)	1990-01-24
JPH027638U (en)	1990-01-18
DE3921643A1 (en)	1990-01-11
FR2633735B1 (en)	1993-05-07

Publication	Publication Date	Title
EP0407914A3 (en)	1991-12-11	Camera
GB2222337B (en)	1992-12-16	Automatic focusing camera
GB2255420B (en)	1993-02-24	Camera
EP0423691A3 (en)	1992-04-29	Camera
GB2237397B (en)	1993-08-11	Strobe-incorporated camera
GB2225871B (en)	1992-12-23	Zoom finder
GB2224359B (en)	1993-02-03	Zoom lens camera
GB2226467B (en)	1993-08-04	Automatic focusing camera
GB8814239D0 (en)	1988-07-20	Autofocus camera system
GB2224360B (en)	1993-01-20	Camera
HK10094A (en)	1994-02-09	Dual lens camera
GB2223602B (en)	1992-12-23	Camera with zoom lens
GB2253110B (en)	1995-07-26	An autofocus camera
GB2249188B (en)	1994-04-06	Camera
HK85493A (en)	1993-08-27	Dual lens camera
GB8915252D0 (en)	1989-08-23	Battery autofocus camera
GB2234360B (en)	1993-10-13	Viewfinder for camera
GB2221049B (en)	1992-09-23	Camera mechanism
EP0324107A3 (en)	1990-12-12	Colour-television camera
HK77095A (en)	1995-05-26	Camera view finder
EP0441352A3 (en)	1992-06-24	Camera
EP0441115A3 (en)	1992-03-04	Camera
GB8801091D0 (en)	1988-02-17	Identityportrait camera
GB2230615B (en)	1993-03-31	Camera
GB8904748D0 (en)	1989-04-12	Camera lens

Legal Events

Date	Code	Title	Description
2006-03-01	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 20050630