JPS6447919A - Infrared-ray detecting element - Google Patents
Infrared-ray detecting elementInfo
- Publication number
- JPS6447919A JPS6447919A JP20567887A JP20567887A JPS6447919A JP S6447919 A JPS6447919 A JP S6447919A JP 20567887 A JP20567887 A JP 20567887A JP 20567887 A JP20567887 A JP 20567887A JP S6447919 A JPS6447919 A JP S6447919A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- electrode
- limiting part
- lead
- field
- 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
- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE:To maintain high sensitivity and to make it possible to decrease sensitivity outside a field of view, by providing a field-of-view limiting part, which has the thickness of twice or less the wavelength of infrared rays, between an infrared-ray condenser lens and pyroelectric type infrared-ray detecting element. CONSTITUTION:A signal lead-out electrode 2 and lead electrode 3 are formed on one surface of a pyroelectric element 1 comprising lead titanate ceramics. Al having a thickness of about 2mum and In having a thickness of about 1mum are sequentially formed as a ring shaped field-of-view limiting part 4 on the opposite surface of the element 1. An electrode 5 on an infrared-ray receiving surface is formed on the element 1 in the inside of the limiting part 4. A lead electrode 6 is formed on the limiting part 4 in continuation with the electrode 5. Meanwhile, a field-of-view limiting part 8 and a lead electrode 9 are evaporated similarly on the planar side of an infrared-ray condenser lens 7 made of Ge. Then the limiting parts 4 and 8 undergo thermocompression bonding so that they are not deviated. cut-in grooves 10, which are to become an air hole, are provided in the limiting parts 4 and 8. Thus, an interval of about 6mum can be formed between the lens 7 and the element 1. Then, lead wires 11 and 12 are connected to the electrodes 3 and 9, and the detecting element having the lens can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20567887A JPS6447919A (en) | 1987-08-19 | 1987-08-19 | Infrared-ray detecting element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20567887A JPS6447919A (en) | 1987-08-19 | 1987-08-19 | Infrared-ray detecting element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6447919A true JPS6447919A (en) | 1989-02-22 |
Family
ID=16510879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20567887A Pending JPS6447919A (en) | 1987-08-19 | 1987-08-19 | Infrared-ray detecting element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6447919A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2721108A1 (en) * | 1994-06-09 | 1995-12-15 | L2G | Appts. determines illumination threshold for public lighting |
-
1987
- 1987-08-19 JP JP20567887A patent/JPS6447919A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2721108A1 (en) * | 1994-06-09 | 1995-12-15 | L2G | Appts. determines illumination threshold for public lighting |
EP0687894A1 (en) * | 1994-06-09 | 1995-12-20 | L 2 G | Detector of a luminosity threshold for controlling a public lighting system |
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