GB2019595B - Automatic focusing - Google Patents

Automatic focusing

Info

Publication number: GB2019595B
Authority: GB; United Kingdom
Prior art keywords: automatic focusing; focusing; automatic
Prior art date: 1978-04-25
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

GB7913648A

Other versions

GB2019595A (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.)

1978-04-25

Filing date

1979-04-19

Publication date

1982-09-29

1979-04-19 Application filed by Polaroid Corp filed Critical Polaroid Corp

1979-10-31 Publication of GB2019595A publication Critical patent/GB2019595A/en

1982-09-29 Application granted granted Critical

1982-09-29 Publication of GB2019595B publication Critical patent/GB2019595B/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
- G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Automatic Focus Adjustment (AREA)
Focusing (AREA)
Lens Barrels (AREA)

GB7913648A 1978-04-25 1979-04-19 Automatic focusing Expired GB2019595B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US89978578A	1978-04-25	1978-04-25

Publications (2)

Publication Number	Publication Date
GB2019595A GB2019595A (en)	1979-10-31
GB2019595B true GB2019595B (en)	1982-09-29

Family

ID=25411561

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7913648A Expired GB2019595B (en)	1978-04-25	1979-04-19	Automatic focusing

Country Status (9)

Country	Link
JP (1)	JPS54158226A (en)
AT (1)	AT370886B (en)
AU (1)	AU528360B2 (en)
CA (1)	CA1124125A (en)
CH (1)	CH646797A5 (en)
DE (1)	DE2916569A1 (en)
FR (1)	FR2424556B1 (en)
GB (1)	GB2019595B (en)
IT (1)	IT1112710B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4335942A (en) *	1979-10-26	1982-06-22	Canon Kabushiki Kaisha	Camera provided with automatic focus detector
JPS5749907A (en) *	1980-09-09	1982-03-24	Ricoh Co Ltd	Noise eliminating circuit and in-focus detecting circuit
JPS5772115A (en) *	1980-10-23	1982-05-06	Canon Inc	Output stablizing circuit for focus detector
JPS57128307A (en) *	1981-02-03	1982-08-09	Nippon Kogaku Kk <Nikon>	Automatic focus adjuster
JPS57169710A (en) *	1981-04-10	1982-10-19	West Electric Co Ltd	Automatic focusing device
JPS587113A (en) *	1981-07-06	1983-01-14	Fuji Photo Optical Co Ltd	Autofocusing device due to multipoint photometry
JPS58198009A (en) *	1982-05-14	1983-11-17	West Electric Co Ltd	Ultrasonic auto-focusing device
JPS60135712U (en) *	1984-02-20	1985-09-09	三洋電機株式会社	auto focus camera
JPS60214320A (en) *	1984-04-11	1985-10-26	Kowa Co	Automatic focus adjusting device
GB2161947B (en) *	1984-06-08	1988-06-29	Konishiroku Photo Ind	Automatic focusing camera
JPS6127107U (en) *	1984-07-23	1986-02-18	ライトロン株式会社	auto focus device
JPH0224421A (en) *	1988-07-13	1990-01-26	Sadajiro Amiya	Retaining wall concrete block and forming method thereof
JPH0430024A (en) *	1990-05-25	1992-02-03	Sekisui House Ltd	Basement made of precast concrete

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4010479A (en) *	1974-07-10	1977-03-01	Asahi Kogaku Kogyo Kabushiki Kaisha	Focusing apparatus for optical systems
DE2522757A1 (en) *	1975-05-22	1976-12-09	Walter Landsrath	Automatic rangefinder for cambers - using transmission time of ultrasound to measure object range
US4078171A (en) *	1976-06-14	1978-03-07	Honeywell Inc.	Digital auto focus

1979
- 1979-04-19 GB GB7913648A patent/GB2019595B/en not_active Expired
- 1979-04-23 AU AU46286/79A patent/AU528360B2/en not_active Ceased
- 1979-04-24 CH CH386679A patent/CH646797A5/en not_active IP Right Cessation
- 1979-04-24 JP JP5080679A patent/JPS54158226A/en active Granted
- 1979-04-24 DE DE19792916569 patent/DE2916569A1/en active Granted
- 1979-04-24 IT IT22114/79A patent/IT1112710B/en active
- 1979-04-25 FR FR7910479A patent/FR2424556B1/en not_active Expired
- 1979-04-25 CA CA326,335A patent/CA1124125A/en not_active Expired
- 1979-04-25 AT AT0309979A patent/AT370886B/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
JPS6226449B2 (en)	1987-06-09
JPS54158226A (en)	1979-12-13
FR2424556B1 (en)	1986-01-10
IT1112710B (en)	1986-01-20
AU4628679A (en)	1979-11-01
GB2019595A (en)	1979-10-31
DE2916569C2 (en)	1990-11-08
IT7922114A0 (en)	1979-04-24
AU528360B2 (en)	1983-04-28
CA1124125A (en)	1982-05-25
DE2916569A1 (en)	1979-11-08
ATA309979A (en)	1982-09-15
CH646797A5 (en)	1984-12-14
AT370886B (en)	1983-05-10
FR2424556A1 (en)	1979-11-23

Publication	Publication Date	Title
JPS5511275A (en)	1980-01-26	Automatic focusing camera
JPS5535399A (en)	1980-03-12	Focusing device
GB2027218B (en)	1982-08-11	Automatically focused camera
GB2070263B (en)	1983-08-17	Automatic focusing
JPS5550225A (en)	1980-04-11	Automatic focusing camera
GB2045958B (en)	1982-12-08	Camera having automatic focusing
GB2019595B (en)	1982-09-29	Automatic focusing
GB2013501A (en)	1979-08-15	Intracular lens
JPS54119232A (en)	1979-09-17	Automatic focusing controller
JPS5598724A (en)	1980-07-28	Automatic focussing camera
JPS55118021A (en)	1980-09-10	Automatic focusing device
GB2025634B (en)	1982-08-25	Automatic focus cameras
JPS5688121A (en)	1981-07-17	Lowwcontrasttbias automatic focusing device
JPS5558153A (en)	1980-04-30	Automatic tonometer
GB2017942B (en)	1982-06-23	Focusing device
JPS5518285A (en)	1980-02-08	Automatic sorter
JPS54161781A (en)	1979-12-21	Automatic tonometer
GB2016719B (en)	1982-03-10	Automatic socusing camera
JPS5529604A (en)	1980-03-03	Automatic threeewheeler
JPS54104859A (en)	1979-08-17	Automatic focus detector
JPS54125025A (en)	1979-09-28	Automatic camera
JPS54163750A (en)	1979-12-26	Automatic welder
GB2058378B (en)	1983-03-16	Automatic focusing camera
JPS5554191A (en)	1980-04-21	Automatic extractor
GB2016721B (en)	1982-06-09	Automatic eyposure camera

Legal Events

Date	Code	Title	Description
1992-12-16	PCNP	Patent ceased through non-payment of renewal fee