IT972631B - Automatismo di esposizione per fotocamere - Google Patents

Automatismo di esposizione per fotocamere

Info

Publication number: IT972631B
Authority: IT; Italy
Prior art keywords: cameras; exposure automation; automation; exposure
Prior art date: 1972-03-07

Application number

IT33245/72A

Other languages

English (en)

Original Assignee

Siemens Ag

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.)

1972-03-07

Filing date

1972-12-20

Publication date

1974-05-31

1972-12-20 Application filed by Siemens Ag filed Critical Siemens Ag

1974-05-31 Application granted granted Critical

1974-05-31 Publication of IT972631B publication Critical patent/IT972631B/it

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
- G03B7/081—Analogue circuits
- G03B7/083—Analogue circuits for control of exposure time

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Exposure Control For Cameras (AREA)
Studio Devices (AREA)

IT33245/72A 1972-03-07 1972-12-20 Automatismo di esposizione per fotocamere IT972631B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2210958A DE2210958A1 (de)	1972-03-07	1972-03-07	Belichtungsautomatik fuer kameras

Publications (1)

Publication Number	Publication Date
IT972631B true IT972631B (it)	1974-05-31

Family

ID=5838188

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT33245/72A IT972631B (it)	1972-03-07	1972-12-20	Automatismo di esposizione per fotocamere

Country Status (8)

Country	Link
US (1)	US3864701A (it)
JP (1)	JPS48102617A (it)
BE (1)	BE796412A (it)
DE (1)	DE2210958A1 (it)
FR (1)	FR2175389A7 (it)
GB (1)	GB1404830A (it)
IT (1)	IT972631B (it)
NL (1)	NL7217217A (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS56251Y2 (it) *	1974-07-27	1981-01-07
US4358186A (en) *	1979-12-31	1982-11-09	Polaroid Corporation	Method and apparatus for controlling exposure by selective use of blocking visible filter
US4474441A (en) *	1980-03-04	1984-10-02	Polaroid Corporation	Method and apparatus for controlling exposure by selective use of blocking visible filter
US4542973A (en) *	1980-10-06	1985-09-24	Polaroid Corporation	Dynamically controlled scene radiation leakage for exposure control
US5541706A (en) *	1992-10-22	1996-07-30	Nikon Corporation	Exposure calculation device for a camera
EP3372357A1 (en) *	2017-03-10	2018-09-12	Koninklijke Philips N.V.	Handheld personal care device and method of estimating a position and/or an orientation of a handheld personal device relative to a subject

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1497371C3 (de) *	1965-03-10	1974-01-10	Agfa-Gevaert Ag, 5090 Leverkusen	Verfahren zur Regelung der Belichtungszeit von Kopiergeräten
JPS4837605B1 (it) *	1970-04-14	1973-11-12

1972
- 1972-03-07 DE DE2210958A patent/DE2210958A1/de active Pending
- 1972-10-31 GB GB5003272A patent/GB1404830A/en not_active Expired
- 1972-12-14 FR FR7244522A patent/FR2175389A7/fr not_active Expired
- 1972-12-18 NL NL7217217A patent/NL7217217A/xx unknown
- 1972-12-20 IT IT33245/72A patent/IT972631B/it active
1973
- 1973-03-02 US US337727A patent/US3864701A/en not_active Expired - Lifetime
- 1973-03-07 JP JP48026908A patent/JPS48102617A/ja active Pending
- 1973-03-07 BE BE128491A patent/BE796412A/xx unknown

Also Published As

Publication number	Publication date
BE796412A (fr)	1973-09-07
FR2175389A7 (it)	1973-10-19
GB1404830A (en)	1975-09-03
US3864701A (en)	1975-02-04
NL7217217A (it)	1973-09-11
JPS48102617A (it)	1973-12-24
DE2210958A1 (de)	1973-09-20

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