JPH0356920U - - Google Patents
Info
- Publication number
- JPH0356920U JPH0356920U JP11742389U JP11742389U JPH0356920U JP H0356920 U JPH0356920 U JP H0356920U JP 11742389 U JP11742389 U JP 11742389U JP 11742389 U JP11742389 U JP 11742389U JP H0356920 U JPH0356920 U JP H0356920U
- Authority
- JP
- Japan
- Prior art keywords
- light
- film
- photoreflector
- detection device
- light emitted
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Details Of Cameras Including Film Mechanisms (AREA)
Description
第１図は、この考案に係るフイルム給送検出装
置の一実施例の全体構成を示す断面図、第２図は
、第１図の実施例に示したフオトリフレクタによ
るカメラの給送状態検知回路の回路図、第３図は
、第１図の実施例に示したフオトリフレクタのＳ
／Ｎ比を説明するための受光素子の出力波形図、
第４図は、第１図の実施例に示したフオトリフレ
クタの受光素子の出力対フイルム面ともう一方の
反射面との関係を示す特性図、第５図は、従来の
フイルム孔の光電的検出装置を有するカメラの構
成を示す断面図、第６図は、第５図の従来例の受
光素子の出力波形図である。
１１……カメラ本体、１２……フオトリフレク
タ、１２ａ……発光素子、１２ｂ……受光素子、
１３……裏蓋、１５……圧板、１５ａ……透孔、
１７……光学部材、１８……光トラツプ、１９…
…フイルム、１９ａ……フイルムパーフオレーシ
ヨン、２０……ＣＰＵ、２１……モータドライバ
、２２……モータ、２３……表示器。
FIG. 1 is a sectional view showing the overall configuration of an embodiment of the film feeding detection device according to the invention, and FIG. 2 is a camera feeding state detection circuit using a photoreflector shown in the embodiment of FIG. 1. The circuit diagram of FIG. 3 is the S of the photoreflector shown in the embodiment of FIG.
Output waveform diagram of the light receiving element for explaining the /N ratio,
FIG. 4 is a characteristic diagram showing the relationship between the output of the light receiving element of the photoreflector shown in the embodiment of FIG. 1 versus the film surface and the other reflecting surface, and FIG. FIG. 6, which is a sectional view showing the configuration of a camera having a detection device, is an output waveform diagram of the conventional light-receiving element shown in FIG. 11...Camera body, 12...Photoreflector, 12a...Light emitting element, 12b...Light receiving element,
13... Back cover, 15... Pressure plate, 15a... Through hole,
17... Optical member, 18... Optical trap, 19...
...Film, 19a...Film perforation, 20...CPU, 21...Motor driver, 22...Motor, 23...Display device.
Claims (1)
する一つのフオトリフレクタの前記投光部から出
射された光が、フイルムパーフオレーシヨンを透
過したときとフイルム面で反射された光を受光し
たときの前記受光部の出力の差によりフイルム給
送状態を検出するフイルム給送検出装置において
、上記カメラ本体の裏蓋側に設けられ、上記投光
部から出射されて上記フイルムパーフオレーシヨ
ンを透過した光を消滅させる光トラツプと、上記
裏蓋側において上記フオトリフレクタに相対して
配設され、上記発光部から出射されて上記フイル
ムパーフオレーシヨンを透過した光を上記光トラ
ツプに導びくミラー、プリズム等の光学部材とを
具備したことを特徴とするフイルム給送検出装置
。 The light emitted from the light projecting part of one photoreflector having a light projecting part and a light receiving part installed in the camera body is received when the light is transmitted through the film perforation and the light reflected by the film surface. The film feeding detection device detects the film feeding state based on the difference in the output of the light receiving section when an optical trap for extinguishing the light emitted by the film; and a mirror disposed on the back cover side facing the photoreflector and guiding the light emitted from the light emitting section and transmitted through the film perflation to the optical trap; 1. A film feeding detection device comprising an optical member such as a prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11742389U JPH0356920U (en) | 1989-10-05 | 1989-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11742389U JPH0356920U (en) | 1989-10-05 | 1989-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0356920U true JPH0356920U (en) | 1991-05-31 |
Family
ID=31665638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11742389U Pending JPH0356920U (en) | 1989-10-05 | 1989-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356920U (en) |
-
1989
- 1989-10-05 JP JP11742389U patent/JPH0356920U/ja active Pending
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