Title:
INFRARED PENETRATION DETECTOR
Document Type and Number:
Japanese Patent JPS61175529
Kind Code:
A
Abstract:
An infrared intrusion detector having a predetermined number of rows of radiation reception zones comprises a primary reflector and a secondary reflector for each row of radiation reception zones. The primary reflectors and their associated secondary reflectors form a folded radiation path. The folded radiation path allows for compact construction and simple manufacturing of the infrared intrusion detector. One reflector of each radiation reception zone forms together with the infrared sensor a compact structural unit. The other reflectors of each radiation reception zone are combined to form a further structural unit which is arranged in a predetermined spaced relationship to the first compact structural unit. In order to achieve uniform detection sensitivity in radiation reception zones having different angles of inclination to the horizontal plane, a larger focal length is chosen for radiation reception zones with smaller angles of inclination and longer range. Likewise, to achieve uniform detection sensitivity even with oblique infrared radiation impingement, the surface area of the primary reflectors increases within each horizontal row from the middle to the sides.
More Like This:
| WO/2014/054119 | ILLUMINANCE MEASUREMENT DEVICE |
| JP4429447 | Streak device |
| JP3331507 | [Title of the Invention] Pyroelectric infrared sensor |
Inventors:
KURUTO MIYURAA
PEETAA GURUBAA
ARUFUREETO BUYUUTORITSUHI
PEETAA GURUBAA
ARUFUREETO BUYUUTORITSUHI
Application Number:
JP1031686A
Publication Date:
August 07, 1986
Filing Date:
January 22, 1986
Export Citation:
Assignee:
CERBERUS AG
International Classes:
G01J1/02; G01V8/14; G08B13/18; G08B13/193; (IPC1-7): G01J1/02; G01V9/04; G08B13/18
Attorney, Agent or Firm:
Michiteru Soga