Title:
INFRARED DETECTOR
Document Type and Number:
Japanese Patent JPS63243820
Kind Code:
A
Abstract:
PURPOSE:To reduce noises to a detecting element and to shorten the cooling time of the detecting element by providing a shield body which has a corner cube reflecting mirror array body and inhibiting a reflected infrared ray from impinging on the infrared detecting element. CONSTITUTION:The shield body 7 is arranged in a dewer 1 at a distance from a cooling part 6 which cools the quantum type infrared detecting element 4 while surrounding the element 4. The shield body 7 has an opening part where the infrared ray 11 to be measured passes and also has the corner cube reflecting mirror array body 8 arranged opposite the element 4. The reflecting mirror array body 8 has a high reflection factor and reflects the incident light nearly in its incidence direction. Then the infrared ray 11 is detected by the element 4 and an unnecessary infrared ray 12 which travels to the element 4 from outside the detector is cut off by the shield body 7 which has the reflecting mirror array body 8 and never incident on the element 4. The reflecting mirror array body 8 reflects the infrared ray nearly in its incidence direction, so the unnecessary infrared ray 12 from outside a necessary visual field is prevented from being incident on the element 4 after being reflected here.
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Inventors:
WAKABAYASHI SATOSHI
TAJIME TORU
TAJIME TORU
Application Number:
JP7940187A
Publication Date:
October 11, 1988
Filing Date:
March 31, 1987
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01J1/02; G01J1/04; G01J5/02; G01J5/06; G01J5/28; (IPC1-7): G01J1/02; G01J1/04; G01J5/02; G01J5/06
Attorney, Agent or Firm:
Masuo Oiwa
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