JPS5748726A - Underexposure warning device - Google Patents

Underexposure warning device

Info

Publication number
JPS5748726A
JPS5748726A JP55124275A JP12427580A JPS5748726A JP S5748726 A JPS5748726 A JP S5748726A JP 55124275 A JP55124275 A JP 55124275A JP 12427580 A JP12427580 A JP 12427580A JP S5748726 A JPS5748726 A JP S5748726A
Authority
JP
Japan
Prior art keywords
underexposure
generating
warning device
detection part
underexposure warning
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.)
Pending
Application number
JP55124275A
Other languages
Japanese (ja)
Inventor
Shinichiro Koshiishi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55124275A priority Critical patent/JPS5748726A/en
Publication of JPS5748726A publication Critical patent/JPS5748726A/en
Pending 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

Abstract

PURPOSE:To give warning effectively by generating a sound on detecting underexposure. CONSTITUTION:When a release switch S2 in a self-timer detection part 2 is turned on to put a power source to work, if the quantity of external light is small, the output of a photometric circuit IC1 in an underexposure detection part 3 falls to a low level and transistors Q3 and Q4 turn on to put an oscillation part 1 in operation, generating a warning tone by a ceramic sounding body GS.
JP55124275A 1980-09-08 1980-09-08 Underexposure warning device Pending JPS5748726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55124275A JPS5748726A (en) 1980-09-08 1980-09-08 Underexposure warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55124275A JPS5748726A (en) 1980-09-08 1980-09-08 Underexposure warning device

Publications (1)

Publication Number Publication Date
JPS5748726A true JPS5748726A (en) 1982-03-20

Family

ID=14881301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55124275A Pending JPS5748726A (en) 1980-09-08 1980-09-08 Underexposure warning device

Country Status (1)

Country Link
JP (1) JPS5748726A (en)

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