GB2013353B - Focus control system for variable focus lenses - Google Patents

Focus control system for variable focus lenses

Info

Publication number: GB2013353B
Authority: GB; United Kingdom
Prior art keywords: focus; control system; lenses; variable; focus control
Prior art date: 1977-12-30
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

Application number

GB7848907A

Other versions

GB2013353A (en

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.)

Polaroid Corp

Original Assignee

Polaroid Corp

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.)

1977-12-30

Filing date

1978-12-18

Publication date

1982-05-19

1978-12-18 Application filed by Polaroid Corp filed Critical Polaroid Corp

1979-08-08 Publication of GB2013353A publication Critical patent/GB2013353A/en

1982-05-19 Application granted granted Critical

1982-05-19 Publication of GB2013353B publication Critical patent/GB2013353B/en

Status Expired legal-status Critical Current

Classifications

- 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
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Radar, Positioning & Navigation (AREA)
Remote Sensing (AREA)
Optics & Photonics (AREA)
Acoustics & Sound (AREA)
Computer Networks & Wireless Communication (AREA)
Focusing (AREA)
Lens Barrels (AREA)
Automatic Focus Adjustment (AREA)

GB7848907A 1977-12-30 1978-12-18 Focus control system for variable focus lenses Expired GB2013353B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US86585277A	1977-12-30	1977-12-30

Publications (2)

Publication Number	Publication Date
GB2013353A GB2013353A (en)	1979-08-08
GB2013353B true GB2013353B (en)	1982-05-19

Family

ID=25346383

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7848907A Expired GB2013353B (en)	1977-12-30	1978-12-18	Focus control system for variable focus lenses

Country Status (9)

Country	Link
JP (1)	JPS54109837A (en)
AT (1)	AT377101B (en)
AU (1)	AU525816B2 (en)
CA (1)	CA1122455A (en)
CH (1)	CH637222A5 (en)
DE (1)	DE2856573A1 (en)
FR (1)	FR2413680A1 (en)
GB (1)	GB2013353B (en)
IE (1)	IE48251B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3107945A1 (en) *	1980-03-03	1981-12-24	Polaroid Corp., 02139 Cambridge, Mass.	METHOD FOR FOCUSING PHOTOGRAPHIC APPARATUS AND DEVICE THEREFOR
JPS59125718A (en) *	1983-01-06	1984-07-20	Canon Inc	Copying device
JP6577153B2 (en)	2017-01-27	2019-09-18	富士フイルム株式会社	Camera system, camera, lens, accessory, and accessory detection method for camera system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2105288B2 (en) *	1970-02-14	1973-03-15	Kabushiki Kaisha Ricoh, Tokio	CAMERA WITH AUTOMATIC FOCUSING
US3917395A (en) *	1973-06-28	1975-11-04	Honeywell Inc	Control circuit for photographic apparatus
CA1099554A (en) *	1976-10-04	1981-04-21	Polaroid Corporation	Automatic range finding and focussing camera

1978
- 1978-12-18 GB GB7848907A patent/GB2013353B/en not_active Expired
- 1978-12-28 IE IE256378A patent/IE48251B1/en unknown
- 1978-12-28 DE DE19782856573 patent/DE2856573A1/en not_active Ceased
- 1978-12-28 CH CH1320978A patent/CH637222A5/en not_active IP Right Cessation
- 1978-12-29 CA CA318,864A patent/CA1122455A/en not_active Expired
- 1978-12-29 JP JP16438678A patent/JPS54109837A/en active Pending
1979
- 1979-01-02 AT AT1279A patent/AT377101B/en not_active IP Right Cessation
- 1979-01-02 AU AU43062/79A patent/AU525816B2/en not_active Ceased
- 1979-01-02 FR FR7900019A patent/FR2413680A1/en active Granted

Also Published As

Publication number	Publication date
AU4306279A (en)	1979-07-05
CA1122455A (en)	1982-04-27
IE48251B1 (en)	1984-11-14
FR2413680B1 (en)	1983-11-18
AT377101B (en)	1985-02-11
CH637222A5 (en)	1983-07-15
JPS54109837A (en)	1979-08-28
IE782563L (en)	1979-06-30
ATA1279A (en)	1984-06-15
GB2013353A (en)	1979-08-08
DE2856573A1 (en)	1979-07-05
FR2413680A1 (en)	1979-07-27
AU525816B2 (en)	1982-12-02

Publication	Publication Date	Title
US4095139B1 (en)	1997-07-08	Light control system
JPS5499654A (en)	1979-08-06	Device for controlling optical focus
GB2095503B (en)	1983-01-26	Focusing system
JPS53135347A (en)	1978-11-25	Focus changeable optical system
JPS544105A (en)	1979-01-12	Lens focusing device
GB2001779B (en)	1982-01-27	Zoom lens system
JPS52114321A (en)	1977-09-26	Objective lens control unit having variable focal length
JPS53129030A (en)	1978-11-10	Focus adjusting device for objective lens
JPS53135658A (en)	1978-11-27	Zoom lens including ultraawide lens
IL55670A0 (en)	1978-12-17	Lenticulates lens
GB2011643B (en)	1982-03-24	Photographic lens system
JPS5416889A (en)	1979-02-07	Optical system for focusing retina
JPS53116828A (en)	1978-10-12	Autoofocusing system for zoom lens
JPS5351757A (en)	1978-05-11	Ocular zoom lens system
JPS5480143A (en)	1979-06-26	Zoom lens
GB2013353B (en)	1982-05-19	Focus control system for variable focus lenses
JPS549623A (en)	1979-01-24	Camera optical system utilizing viser
GB2008789B (en)	1982-04-07	Zoom lens
GB2008794B (en)	1982-03-10	Optical focusing system
DE2862256D1 (en)	1983-06-16	Automatic focusing system
JPS53122438A (en)	1978-10-25	Zoom lens
JPS5366226A (en)	1978-06-13	Focusing system for zoom lens
GB2002534B (en)	1982-02-10	Lens system
JPS5485025A (en)	1979-07-06	Large aperture specific telephoto lens
JPS5485721A (en)	1979-07-07	Lens system

Legal Events

Date	Code	Title	Description
1989-08-09	PCNP	Patent ceased through non-payment of renewal fee