TWM476923U - High efficiency cavity for NDIR gas detector - Google Patents
High efficiency cavity for NDIR gas detectorInfo
- Publication number
- TWM476923U TWM476923U TW102204722U TW102204722U TWM476923U TW M476923 U TWM476923 U TW M476923U TW 102204722 U TW102204722 U TW 102204722U TW 102204722 U TW102204722 U TW 102204722U TW M476923 U TWM476923 U TW M476923U
- Authority
- TW
- Taiwan
- Prior art keywords
- high efficiency
- cavity
- sensor
- focal point
- gas detector
- Prior art date
Links
Abstract
By using gas absorption to optical path relationship, non-dispersive infra-red (NDIR) gas sensor needs one optical cavity for gas detection. The radiated output of MEMS (Micro Electro Mechanical Systems) IR emitter is much weaker than traditional IR lamp that needs a high efficiency infrared optical cavity to operate. An innovated high efficiency infrared cavity is proposed that uses bifocal property of elliptical shape with IR source in one focal point and IR sensor in another focal point. The design also fulfills the narrow incident angle beam requirement for the IR sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102204722U TWM476923U (en) | 2013-03-15 | 2013-03-15 | High efficiency cavity for NDIR gas detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102204722U TWM476923U (en) | 2013-03-15 | 2013-03-15 | High efficiency cavity for NDIR gas detector |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM476923U true TWM476923U (en) | 2014-04-21 |
Family
ID=60625643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW102204722U TWM476923U (en) | 2013-03-15 | 2013-03-15 | High efficiency cavity for NDIR gas detector |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM476923U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
-
2013
- 2013-03-15 TW TW102204722U patent/TWM476923U/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4K | Annulment or lapse of a utility model due to non-payment of fees |