JPS55133025A - Photographing frame number detector of film - Google Patents
Photographing frame number detector of filmInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-04-02 JP JP3961279A patent/JPS55133025A/en active Pending
Cited By (3)
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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