Title:
INFRARED RAY DETECTING ELEMENT
Document Type and Number:
Japanese Patent JP3182703
Kind Code:
B2
Abstract:
PURPOSE: To obtain an inexpensive downsized infrared ray detecting element having high sensitivity by arranging a pair of conductive parts oppositely, While spacing apart from each other, on a semiconductor fiber thereby forming a hybrid fiber.
CONSTITUTION: A pair of conductive parts 2a, 2b are arranged, while spacing apart from each other, on a semiconductor fiber 1 having electric resistance variable with temperature thus forming a hybrid fiber 3. The conductive parts 2a, 2b are composed of good conductors having resistance close to zero and the resistance R of infrared ray detecting element is determined by the gap (d) between the pair of conductive parts 2a, 2b according to a formula; R = ρd/s. represents resistivity of the fiber 1 and even when the resistivity ρ is set high in order to enhance sensitivity of infrared ray detecting element, resistance R can be decreased by decreasing the gap (d). Since the resistance R can be controlled without varying the length and the cross-sectional area (s) of the fiber 1, a fiber 1 having high resistivity can be used with low resistance without imposing negative effect on the thermal characteristics of the fiber 1. Furthermore, number of fibers 1 to be arranged in parallel can be decreased because of low resistance.
Inventors:
Noritoshi Mori
Teijiro Kajiwara
Norio Mutoh
Hiroaki Yanagida
Masaru Miyayama
Teijiro Kajiwara
Norio Mutoh
Hiroaki Yanagida
Masaru Miyayama
Application Number:
JP21664892A
Publication Date:
July 03, 2001
Filing Date:
July 23, 1992
Export Citation:
Assignee:
Sogo Security Co., Ltd.
Hiroaki Yanagida
Hiroaki Yanagida
International Classes:
G01J1/02; G01J5/02; G01J5/20; H01L37/00; (IPC1-7): G01J1/02; H01L37/00
Domestic Patent References:
| JP2310430A | ||||
| JP492656U |
Attorney, Agent or Firm:
Yutaka Kondo