JPH0445110Y2 - - Google Patents
Info
- Publication number
- JPH0445110Y2 JPH0445110Y2 JP8229385U JP8229385U JPH0445110Y2 JP H0445110 Y2 JPH0445110 Y2 JP H0445110Y2 JP 8229385 U JP8229385 U JP 8229385U JP 8229385 U JP8229385 U JP 8229385U JP H0445110 Y2 JPH0445110 Y2 JP H0445110Y2
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- light
- receiver
- alarm
- frost
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 241000238631 Hexapoda Species 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8229385U JPH0445110Y2 (en]) | 1985-05-30 | 1985-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8229385U JPH0445110Y2 (en]) | 1985-05-30 | 1985-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61201191U JPS61201191U (en]) | 1986-12-17 |
| JPH0445110Y2 true JPH0445110Y2 (en]) | 1992-10-23 |
Family
ID=30629879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8229385U Expired JPH0445110Y2 (en]) | 1985-05-30 | 1985-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445110Y2 (en]) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2789582B2 (ja) * | 1987-06-16 | 1998-08-20 | 松下電工株式会社 | 赤外線防犯検知器 |
| US7633067B2 (en) | 2005-03-30 | 2009-12-15 | Optex Co., Ltd. | Security sensor device having frost protective step |
-
1985
- 1985-05-30 JP JP8229385U patent/JPH0445110Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61201191U (en]) | 1986-12-17 |
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