JPS55133025A - Photographing frame number detector of film - Google Patents

Photographing frame number detector of film

Info

Publication number
JPS55133025A
JPS55133025A JP3961279A JP3961279A JPS55133025A JP S55133025 A JPS55133025 A JP S55133025A JP 3961279 A JP3961279 A JP 3961279A JP 3961279 A JP3961279 A JP 3961279A JP S55133025 A JPS55133025 A JP S55133025A
Authority
JP
Japan
Prior art keywords
generating body
film
film winding
frame
counting
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
JP3961279A
Other languages
Japanese (ja)
Inventor
Shuichi Takayama
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP3961279A priority Critical patent/JPS55133025A/en
Publication of JPS55133025A publication Critical patent/JPS55133025A/en
Pending legal-status Critical Current

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  • Indication In Cameras, And Counting Of Exposures (AREA)

Abstract

PURPOSE: To perform the detection and display of photographed frame number surely in the absence of contact by optically detecting the count generating body provided to the rotator interlocking to a film winding mechanism and letting the same generate counting electric signals.
CONSTITUTION: A count signal generating body 35 which constitutes a reflecting part is provided to the top end face 34a of a film winding shaft 34 or the like turning cooperatively with the film winding mechanism such as winding motor 8. This signal generating body 35 is optically detected by a light emitting device 14, a photo diode 15 forming a photo detector, etc. at every one turn of the shaft 34. If the counting pulses by the diode 15 or the like are counted by a counter which generates a frame detection output at every counting corresponding to one frame, then the number of photographed frames may be surely detected and displayed without chattering or the like in the absence of contact with the film. Here, the similar results are also obtained even by using a shield plate, through-hole for light transmission or the like for the generating body 35.
COPYRIGHT: (C)1980,JPO&Japio
JP3961279A 1979-04-02 1979-04-02 Photographing frame number detector of film Pending JPS55133025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3961279A JPS55133025A (en) 1979-04-02 1979-04-02 Photographing frame number detector of film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3961279A JPS55133025A (en) 1979-04-02 1979-04-02 Photographing frame number detector of film

Publications (1)

Publication Number Publication Date
JPS55133025A true JPS55133025A (en) 1980-10-16

Family

ID=12557924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3961279A Pending JPS55133025A (en) 1979-04-02 1979-04-02 Photographing frame number detector of film

Country Status (1)

Country Link
JP (1) JPS55133025A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178227A (en) * 1981-04-27 1982-11-02 Olympus Optical Co Ltd Film counter of camera
JPS57204529A (en) * 1981-06-12 1982-12-15 Mamiya Koki Kk Film counter of camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178227A (en) * 1981-04-27 1982-11-02 Olympus Optical Co Ltd Film counter of camera
JPS6359125B2 (en) * 1981-04-27 1988-11-17
JPS57204529A (en) * 1981-06-12 1982-12-15 Mamiya Koki Kk Film counter of camera

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