JPS52412A - Long exposure device for photosensitivity meter - Google Patents

Long exposure device for photosensitivity meter

Info

Publication number
JPS52412A
JPS52412A JP7727975A JP7727975A JPS52412A JP S52412 A JPS52412 A JP S52412A JP 7727975 A JP7727975 A JP 7727975A JP 7727975 A JP7727975 A JP 7727975A JP S52412 A JPS52412 A JP S52412A
Authority
JP
Japan
Prior art keywords
exposure device
photosensitivity
meter
long exposure
magnets
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
JP7727975A
Other languages
Japanese (ja)
Inventor
Kenji Ozawa
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP7727975A priority Critical patent/JPS52412A/en
Publication of JPS52412A publication Critical patent/JPS52412A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

PURPOSE:To obtain a long exposure device capable of controlling the exposure uniformly and accurately by actuating front and rear blades by magnets to open and close a pa th of light at a same time.
JP7727975A 1975-06-23 1975-06-23 Long exposure device for photosensitivity meter Pending JPS52412A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7727975A JPS52412A (en) 1975-06-23 1975-06-23 Long exposure device for photosensitivity meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7727975A JPS52412A (en) 1975-06-23 1975-06-23 Long exposure device for photosensitivity meter

Publications (1)

Publication Number Publication Date
JPS52412A true JPS52412A (en) 1977-01-05

Family

ID=13629414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7727975A Pending JPS52412A (en) 1975-06-23 1975-06-23 Long exposure device for photosensitivity meter

Country Status (1)

Country Link
JP (1) JPS52412A (en)

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