Optics: measuring and testing – For light transmission or absorption – Of fluent material
Patent
1995-01-25
1996-06-04
McGraw, Vincent P.
Optics: measuring and testing
For light transmission or absorption
Of fluent material
25022723, 356301, 385 12, G01N 2111, G01N 2164, G01N 2165
Patent
active
055238459
ABSTRACT:
The first branch 1a of the optical fiber 1 is connected to the light source 2, and the second branch 1b is connected to the optical measuring unit 3. A taper-shaped tip member 8 is fitted to a tip end of the optical fiber unit 1 with the use of a jig member 4. The inner hollow space 7 in the tip member 8 is connected with the air suction device 11, through the gap 5 formed between the optical fiber unit 1 and the jig member 4 and the air suction tube 10. The air suction device 11 discharges air from the inner hollow space 7 to suck liquid through the through-hole 6 into the inner hollow space. The air suction device 11 is controlled by the controller 12. Because the optical fiber unit can directly irradiate liquid with light, measurement can be performed with high sensitivity. The optical fiber unit is prevented from contamination.
REFERENCES:
patent: 3814081 (1974-06-01), Mori
patent: 4622974 (1986-11-01), Coleman et al.
patent: 4757194 (1988-07-01), Simms
Patent Abstracts of Japan, vol. 10, No. 327 (P-513) [2383 ] 7 Nov. 1986 JP-A-61134648 Jun. 1986.
Atsumi Kazuhiro
Hayakawa Tsuyoshi
Honzawa Katsu
Kawaguchi Seiji
Masuko Masayuki
Biosensor Laboratories Co., Ltd.
McGraw Vincent P.
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