JPS63181928U - - Google Patents
Info
- Publication number
- JPS63181928U JPS63181928U JP7186987U JP7186987U JPS63181928U JP S63181928 U JPS63181928 U JP S63181928U JP 7186987 U JP7186987 U JP 7186987U JP 7186987 U JP7186987 U JP 7186987U JP S63181928 U JPS63181928 U JP S63181928U
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- sensing element
- fresnel lens
- pyramidal
- lens
- 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 2
- 230000003287 optical effect Effects 0.000 claims description 2
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Burglar Alarm Systems (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7186987U JPS63181928U (uk) | 1987-05-14 | 1987-05-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7186987U JPS63181928U (uk) | 1987-05-14 | 1987-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63181928U true JPS63181928U (uk) | 1988-11-24 |
Family
ID=30914814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7186987U Pending JPS63181928U (uk) | 1987-05-14 | 1987-05-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63181928U (uk) |
-
1987
- 1987-05-14 JP JP7186987U patent/JPS63181928U/ja active Pending