JPH0416927Y2 - - Google Patents
Info
- Publication number
- JPH0416927Y2 JPH0416927Y2 JP544285U JP544285U JPH0416927Y2 JP H0416927 Y2 JPH0416927 Y2 JP H0416927Y2 JP 544285 U JP544285 U JP 544285U JP 544285 U JP544285 U JP 544285U JP H0416927 Y2 JPH0416927 Y2 JP H0416927Y2
- Authority
- JP
- Japan
- Prior art keywords
- visible light
- receiver
- emitter
- emitting element
- optical axis
- 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
- 230000003287 optical effect Effects 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP544285U JPH0416927Y2 (en]) | 1985-01-21 | 1985-01-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP544285U JPH0416927Y2 (en]) | 1985-01-21 | 1985-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61122552U JPS61122552U (en]) | 1986-08-01 |
| JPH0416927Y2 true JPH0416927Y2 (en]) | 1992-04-15 |
Family
ID=30481959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP544285U Expired JPH0416927Y2 (en]) | 1985-01-21 | 1985-01-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416927Y2 (en]) |
-
1985
- 1985-01-21 JP JP544285U patent/JPH0416927Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61122552U (en]) | 1986-08-01 |
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