JPH0494U - - Google Patents
Info
- Publication number
- JPH0494U JPH0494U JP4069390U JP4069390U JPH0494U JP H0494 U JPH0494 U JP H0494U JP 4069390 U JP4069390 U JP 4069390U JP 4069390 U JP4069390 U JP 4069390U JP H0494 U JPH0494 U JP H0494U
- Authority
- JP
- Japan
- Prior art keywords
- light
- vibration
- reflected
- valuable item
- unit
- 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 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Burglar Alarm Systems (AREA)
Description
第１図はこの考案の一実施例の光式盗難防止装
置の説明図、第２図は第１図の装置のおもりとレ
バーの動きを示す説明図である。
符号の説明１……光式盗難防止装置、２……振
動検知ユニツト、３……リフレクタ、４……おも
り、６……リフレクタカバー、７……赤外ＬＥＤ
、８……フオトダイオード。
FIG. 1 is an explanatory diagram of an optical theft prevention device according to an embodiment of the invention, and FIG. 2 is an explanatory diagram showing the movement of the weight and lever of the device of FIG. Explanation of symbols 1... Optical theft prevention device, 2... Vibration detection unit, 3... Reflector, 4... Weight, 6... Reflector cover, 7... Infrared LED
, 8...photodiode.
Claims (1)
知手段により振動を検知したときに前記反射手段
の反射する光量を変える反射光量変化手段とを有
してなり、貴重品等に取り付けられる振動検知ユ
ニツト； 前記貴重品等から離れた位置に設けられる発光
手段；および 前記貴重品等から離れた位置に設けられ、前記
反射手段で反射された前記発光手段の光を受けて
電気信号を出力する光電変換手段； を具備してなることを特徴とする光式盗難防止装
置。[Claims for Utility Model Registration] Comprising a light reflecting means, a vibration detecting means, and a reflected light amount changing means for changing the amount of light reflected by the reflecting means when vibration is detected by the vibration detecting means, A vibration detection unit that is attached to a valuable item, etc.; A light emitting unit that is provided at a position away from the valuable item; and A vibration detection unit that is provided at a position that is remote from the valuable item, etc., and that detects the light from the light emitting unit that is reflected by the reflective unit. 1. An optical theft prevention device comprising: photoelectric conversion means for receiving and outputting an electric signal;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069390U JPH0494U (en) | 1990-04-18 | 1990-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069390U JPH0494U (en) | 1990-04-18 | 1990-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0494U true JPH0494U (en) | 1992-01-06 |
Family
ID=31550703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4069390U Pending JPH0494U (en) | 1990-04-18 | 1990-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0494U (en) |
-
1990
- 1990-04-18 JP JP4069390U patent/JPH0494U/ja active Pending
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