GB1372122A - Illumination indicating apparatus for cameras - Google Patents

Illumination indicating apparatus for cameras

Info

Publication number
GB1372122A
GB1372122A GB3825872A GB3825872A GB1372122A GB 1372122 A GB1372122 A GB 1372122A GB 3825872 A GB3825872 A GB 3825872A GB 3825872 A GB3825872 A GB 3825872A GB 1372122 A GB1372122 A GB 1372122A
Authority
GB
United Kingdom
Prior art keywords
photo
receiver
diode
predetermined value
transistor
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
Application number
GB3825872A
Other languages
English (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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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.)
Filing date
Publication date
Priority claimed from DE19712141534 external-priority patent/DE2141534A1/de
Priority claimed from DE19712141533 external-priority patent/DE2141533A1/de
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of GB1372122A publication Critical patent/GB1372122A/en
Expired 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
GB3825872A 1971-08-19 1972-08-16 Illumination indicating apparatus for cameras Expired GB1372122A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712141534 DE2141534A1 (de) 1971-08-19 1971-08-19 Vorrichtung zur anzeige von unzureichenden lichtverhaeltnissen
DE19712141533 DE2141533A1 (de) 1971-08-19 1971-08-19 Vorrichtung zur anzeige von unzureichenden lichtverhaeltnissen

Publications (1)

Publication Number Publication Date
GB1372122A true GB1372122A (en) 1974-10-30

Family

ID=25761623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3825872A Expired GB1372122A (en) 1971-08-19 1972-08-16 Illumination indicating apparatus for cameras

Country Status (4)

Country Link
JP (1) JPS4830424A (ja)
FR (1) FR2150046A5 (ja)
GB (1) GB1372122A (ja)
IT (1) IT962137B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5063668U (ja) * 1973-10-08 1975-06-10
JPS535854A (en) * 1976-07-03 1978-01-19 Mitsuo Morisane Apparatus for removing floating residue in precipitating tank
JPS5921846Y2 (ja) * 1977-06-01 1984-06-29 荏原インフイルコ株式会社 活性汚泥処理装置

Also Published As

Publication number Publication date
IT962137B (it) 1973-12-20
JPS4830424A (ja) 1973-04-21
FR2150046A5 (ja) 1973-03-30

Similar Documents

Publication Publication Date Title
GB1529213A (en) Exposure control device for a camera using an electro-optic light control element
GB1117057A (en) Improvements in or relating to electronic flash apparatus for use in photography and to light responsive control circuits for use in such apparatus
GB1145296A (en) Improvements in or relating to electronic flash apparatus for use in photography
GB1372122A (en) Illumination indicating apparatus for cameras
GB1068298A (en) Improvements in or relating to electronic photographic flash apparatus
GB1220562A (en) Discharge flashlight
GB1284749A (en) Improvements in and relating to photographic cameras
GB937222A (en) Improvements in or relating to photographic cameras having automatic exposure control means
GB1281599A (en) Feedback controlled photosensitive object detecting system
JPS5355053A (en) Photoelectric encoder
GB909864A (en) Improvements in photographic cameras, more especially cine-cameras, including photoelectric diaphragm control means
JPS51147219A (en) Pattern recognition device
SE340258B (ja)
JPS5271184A (en) Semiconductor photosensitive light emitting element
JPS5414691A (en) Liminous semiconductor device
JPS51132983A (en) Linear light output luminous semiconductor device
JPS52102037A (en) Luminescent display for camera
JPS54124930A (en) Photo sensor system
JPS5430884A (en) Light directivity characteristic judgement apparatus
JPS52133764A (en) Photo coupled multivibrator
JPS5342747A (en) Optical logic device device
JPS5314588A (en) Optical device
GB1049495A (en) Optical projection apparatus
JPS5372641A (en) Image treating device
GB1253247A (ja)

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees