JPS5379400A - Buried type beam system alarm - Google Patents
Buried type beam system alarmInfo
- Publication number
- JPS5379400A JPS5379400A JP15583076A JP15583076A JPS5379400A JP S5379400 A JPS5379400 A JP S5379400A JP 15583076 A JP15583076 A JP 15583076A JP 15583076 A JP15583076 A JP 15583076A JP S5379400 A JPS5379400 A JP S5379400A
- Authority
- JP
- Japan
- Prior art keywords
- beam system
- type beam
- buried type
- system alarm
- interposing
- 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
Landscapes
- Burglar Alarm Systems (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
PURPOSE: To decrease the depth of a housing and the spreading at its front part by interposing a reflecting mirror at the intermediate of a condensing lens and a signal processing circuit block and providing a refractive point at a focal length.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15583076A JPS5379400A (en) | 1976-12-23 | 1976-12-23 | Buried type beam system alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15583076A JPS5379400A (en) | 1976-12-23 | 1976-12-23 | Buried type beam system alarm |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5379400A true JPS5379400A (en) | 1978-07-13 |
Family
ID=15614415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15583076A Pending JPS5379400A (en) | 1976-12-23 | 1976-12-23 | Buried type beam system alarm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5379400A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01217819A (en) * | 1988-02-24 | 1989-08-31 | Matsushita Electric Works Ltd | Human body detecting switch |
US5780854A (en) * | 1996-01-05 | 1998-07-14 | Lin; Edward | Structure for an infrared photoelectric device |
-
1976
- 1976-12-23 JP JP15583076A patent/JPS5379400A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01217819A (en) * | 1988-02-24 | 1989-08-31 | Matsushita Electric Works Ltd | Human body detecting switch |
US5780854A (en) * | 1996-01-05 | 1998-07-14 | Lin; Edward | Structure for an infrared photoelectric device |
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