公开(公告)号：JPH1137942A

公开(公告)日：1999-02-12

申请号：JP20735297

申请日：1997-07-17

Applicant: NAT AEROSPACE LAB ,  JAPAN RES DEV CORP

Inventor： ASAI KEISUKE ,  OKURA ICHIRO

IPC: G01N21/63 ,  G01N21/27 ,  G01N21/31

Abstract: PROBLEM TO BE SOLVED: To reduce restriction on a sensor substance by exciting an oxygen reactive optically pimping substance by a pulse light to measure hourly changes in the intensity of absorption of the measuring light attributed to the molecules of the pumped substance. SOLUTION: An oxygen reactive optically pumping substance such as zinc tetraphenyl porphyrin is fixed thinner on a substrate to make an oxygen sensor 1. The oxygen sensor 1 is irradiated with a laser beam (pulse light) 2 to excite. Measuring light is projected to the oxygen sensor 1 through an optical fiber 4 from a light source 3 and the reflected light is picked up to be detected by a photo detector 6. In other words, a hourly change is measured in the absorption intensity of the measuring light by the oxygen reactive optically pumped substance as being excited. The concentration of oxygen is determined from a pattern 8 of the hourly change. The utilisation of the light absorption of the optically pumped substance enables the utilization of the optically pumping substance accompanying no luminescence thereby allowing the selection of the optimum sensor according to time resolutions or the like of a measuring device.

公开(公告)号：JP2002168783A

公开(公告)日：2002-06-14

申请号：JP2000364640

申请日：2000-11-30

Applicant: NAT AEROSPACE LAB

Inventor： AMAO YUTAKA ,  MIYASHITA TOKUJI ,  OKURA ICHIRO

IPC: G01N31/00 ,  G01N21/64 ,  G01N21/78 ,  G01N31/22

Abstract: PROBLEM TO BE SOLVED: To provide an optical oxygen molecular sensor capable of changing measurement sensitivity freely. SOLUTION: This optical oxygen molecular sensor is produced by doping an organic pigment compound emitting light by excitation light on an oxygen transmitting polymer which is a functional polymer produced by bonding polymers having different oxygen transparencies at a required ratio. The functional polymer is a styrene-trifluoroethyl methacrylate copolymer (Poly-Stym- co-TFEMn) shown by formula (1), and the content ratio n/m is preferably 0

公开(公告)号：JP2001249076A

公开(公告)日：2001-09-14

申请号：JP2000061625

申请日：2000-03-07

Applicant: NAT AEROSPACE LAB

Inventor： ASAI KEISUKE ,  OKURA ICHIRO ,  NISHIDE HIROYUKI

IPC: G01N21/64 ,  G01N21/78

Abstract: PROBLEM TO BE SOLVED: To obtain a highly functional pressure-sensitive paint capable of easily forming an oxygen sensitive film regardless of the material of a specimen while having rapid response against fluctuations in pressure and high oxygen sensitivity not lowered even by the temperature of liquid nitrogen. SOLUTION: By using poly (TMSP) as a binder of a light exciting substance, a paint mixed with the light exciting substance becomes the extremely excellent highly functional pressure-sensitive paint which has both of high pressure sensitivity and low temperature sensitivity by the high oxygen transmissivity of the binder and does not lose oxygen sensitivity even at the temperature of liquid nitrogen and has good response against fluctuations in pressure and can be subjected to spray coating and can be applied regardless of the material and shape of a specimen.

公开(公告)号：DE10327492A1

公开(公告)日：2004-01-08

申请号：DE10327492

申请日：2003-06-17

Applicant: NAT AEROSPACE LAB OF JAPAN CHO

Inventor： ASAI KEISUKE ,  NISHIDE HIROYUKI ,  OKURA ICHIRO

IPC: C07D487/22 ,  C09K11/06 ,  G01N21/64 ,  G01N21/77 ,  G01N21/78 ,  G01N21/31

Abstract: The present invention provides an optical oxygen concentration measurement method and optical oxygen concentration measuring sensor wherein a light-absorbing dye-molecule layer whose absorption spectrum varies depending on the bonding with oxygen molecules is combined with a light-emitting layer, and the oxygen concentration of the ambient fluid can be measured. The light-absorbing layer 4 laminated to an oxygen-quenching light-emitting layer 3 is a film comprising a cobalt-porphyrin complex (CoP) or other light-absorbing dye molecule 7 whose absorption spectrum varies depending on the bonding with oxygen molecules. When the degree of overlap with the light emission spectrum or excitation (absorption) spectrum of the light-emitting layer 3 varies as a result of a variation in the absorption spectrum possessed by the light-absorbing layer 4, the light intensity of output light varies in accordance with the degree of overlap, and the oxygen concentration of the ambient fluid can be measured. These measurement method and measuring sensor can be applied not only to optical fiber sensors, but also to wind tunnel experiments and the like as pressure-sensitive paints.