JPS6446890U - - Google Patents
Info
- Publication number
- JPS6446890U JPS6446890U JP11138588U JP11138588U JPS6446890U JP S6446890 U JPS6446890 U JP S6446890U JP 11138588 U JP11138588 U JP 11138588U JP 11138588 U JP11138588 U JP 11138588U JP S6446890 U JPS6446890 U JP S6446890U
- Authority
- JP
- Japan
- Prior art keywords
- parabolic mirror
- detection element
- detection device
- optical system
- mirror
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988111385U JPH0418075Y2 (lt) | 1988-08-25 | 1988-08-25 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988111385U JPH0418075Y2 (lt) | 1988-08-25 | 1988-08-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446890U true JPS6446890U (lt) | 1989-03-23 |
JPH0418075Y2 JPH0418075Y2 (lt) | 1992-04-22 |
Family
ID=31349385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988111385U Expired JPH0418075Y2 (lt) | 1988-08-25 | 1988-08-25 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0418075Y2 (lt) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54179185U (lt) * | 1978-06-07 | 1979-12-18 | ||
JPS55143694A (en) * | 1979-04-23 | 1980-11-10 | American District Telegraph Co | Invador detector |
-
1988
- 1988-08-25 JP JP1988111385U patent/JPH0418075Y2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54179185U (lt) * | 1978-06-07 | 1979-12-18 | ||
JPS55143694A (en) * | 1979-04-23 | 1980-11-10 | American District Telegraph Co | Invador detector |
Also Published As
Publication number | Publication date |
---|---|
JPH0418075Y2 (lt) | 1992-04-22 |
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