BE755603A - Indicateur avertisseur de lumiere faible pour appareils photographique - Google Patents

Indicateur avertisseur de lumiere faible pour appareils photographique

Info

Publication number
BE755603A
BE755603A BE755603DA BE755603A BE 755603 A BE755603 A BE 755603A BE 755603D A BE755603D A BE 755603DA BE 755603 A BE755603 A BE 755603A
Authority
BE
Belgium
Prior art keywords
low light
warning indicator
light warning
photographic devices
photographic
Prior art date
Application number
Other languages
English (en)
Inventor
R K Carlson
Original Assignee
Bell & Howell Co
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.)
Publication date
Publication of BE755603A publication Critical patent/BE755603A/fr

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
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
BE755603D 1969-09-02 Indicateur avertisseur de lumiere faible pour appareils photographique BE755603A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85448069A 1969-09-02 1969-09-02

Publications (1)

Publication Number Publication Date
BE755603A true BE755603A (fr) 1971-02-15

Family

ID=25318796

Family Applications (1)

Application Number Title Priority Date Filing Date
BE755603D BE755603A (fr) 1969-09-02 Indicateur avertisseur de lumiere faible pour appareils photographique

Country Status (4)

Country Link
BE (1) BE755603A (fr)
DE (1) DE2042371A1 (fr)
FR (1) FR2060793A5 (fr)
NL (1) NL7012918A (fr)

Also Published As

Publication number Publication date
NL7012918A (fr) 1971-03-04
FR2060793A5 (fr) 1971-06-18
DE2042371A1 (de) 1971-03-18

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