JPS5749825A - Infrared ray sensor - Google Patents
Infrared ray sensorInfo
- Publication number
- JPS5749825A JPS5749825A JP55126370A JP12637080A JPS5749825A JP S5749825 A JPS5749825 A JP S5749825A JP 55126370 A JP55126370 A JP 55126370A JP 12637080 A JP12637080 A JP 12637080A JP S5749825 A JPS5749825 A JP S5749825A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- infrared ray
- back surface
- generated
- electric charges
- 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
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract 2
- 241000482268 Zea mays subsp. mays Species 0.000 abstract 2
- 229910001120 nichrome Inorganic materials 0.000 abstract 2
- 239000008188 pellet Substances 0.000 abstract 2
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007738 vacuum evaporation Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/10—Thermoelectric devices using thermal change of the dielectric constant, e.g. working above and below the Curie point
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Abstract
PURPOSE:To increase an S/N radio, by providing an electrode on the entire back surface of a pyroelectric pellet 1 generating electric charges in response to the amount of incident infrared ray, providing electrodes on the inside from the outer edges on the upper surface, and eliminating popcorn noises. CONSTITUTION:The back surface electrode 2 is formed on the entire back surface of the pyroelectric pellet 1 with a thickness of about 50mum formed by lithium tantalate crystal and the like generating the electric charge in response to the variation in the incident infrared ray by vacuum evaporation of nichrome. On the upper surface, two electrodes 3a and 3b, e.g. for sensing the human intrusion, are arranged to face each other. Nichrome is evaporated on the part whose width is (a) from the edges of the inside in their three sides, and lead wires 5a and 5b are provided. When a man moves to the direction of an arrow A, the electric charges generated in the electrodes 3a and 3b are varied, and a signal appears in the lead wires 5a and 5b. If the electrodes 3a and 3b are irradiated by a heating lamp and the like, the equal electric charges are generated in the electrodes 3a and 3b, and the output signal is generated. Thus, the popcorn noises due to the discharge at the time of high electric field generation can be prevented, and the S/N ratio is greatly increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55126370A JPS5749825A (en) | 1980-09-10 | 1980-09-10 | Infrared ray sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55126370A JPS5749825A (en) | 1980-09-10 | 1980-09-10 | Infrared ray sensor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63006366A Division JPS63212829A (en) | 1988-01-14 | 1988-01-14 | Infrared detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5749825A true JPS5749825A (en) | 1982-03-24 |
| JPS6210370B2 JPS6210370B2 (en) | 1987-03-05 |
Family
ID=14933493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55126370A Granted JPS5749825A (en) | 1980-09-10 | 1980-09-10 | Infrared ray sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5749825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63212829A (en) * | 1988-01-14 | 1988-09-05 | Sanyo Electric Co Ltd | Infrared detector |
| JPH0682530U (en) * | 1993-11-08 | 1994-11-25 | 呉羽化学工業株式会社 | Pyroelectric device |
-
1980
- 1980-09-10 JP JP55126370A patent/JPS5749825A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63212829A (en) * | 1988-01-14 | 1988-09-05 | Sanyo Electric Co Ltd | Infrared detector |
| JPH0682530U (en) * | 1993-11-08 | 1994-11-25 | 呉羽化学工業株式会社 | Pyroelectric device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6210370B2 (en) | 1987-03-05 |
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