Fiber optic device for detecting the scattered light or fluoresc

Details Fiber optic device for detecting the scattered light or fluoresc Fiber optic device for detecting the scattered light or fluoresc

1998-06-15

2000-01-18

Kim, Robert

Optics: measuring and testing

By particle light scattering

With photocell detection

356337, 356 731, G01N 2100

Patent

active

060161957

ABSTRACT:
The present invention relates to a fiber optic detector for detection of scattered light or fluorescent light from a liquid suspension, comprising: a lighting optical fiber for transmitting light to a lighting optical fiber outlet; a first gradient index lens disposed at the lighting optical fiber outlet to parallelize light; a detecting optical fiber for transmitting back-scattered light from a detecting optical fiber inlet; a second gradient index lens disposed at the detecting optical fiber inlet to parallelize back-scattered light; and at least one means for focusing parallelized light transmitted from the lighting optical fiber on a point and for focusing light back-scattered from the point to the second gradient index lens of the detecting optical fiber for transmission by the detecting optical fiber.

REFERENCES:
patent: 4099875 (1978-07-01), McMahon
patent: 5141312 (1992-08-01), Thompson
Wiese, H. and Horn, D., "Single-mode fibers in fiber-optic quasielastic light scattering: A study of the dynamics of concentrated latex dispersions", May 15, 1991, J. Chem. Phys. 94(10), American Institute of Physics, pp. 6429-6443.
Ansari, Rafat R. et al., "Microemulsion characterization by the use of a noninvasive backscatter fiber optic probe", Jul. 20, 1993, Applied Optics, vol. 32, No. 21, pp. 3822-3827.
Rogers, Richard B. et al., "A Compact Laser Light Scattering Instrument for Microgravity Research", 1996, Photon Correlation & Scattering, 1996 Technical Digest Series, vol. 14, pp. 40-42.
Ricka, Jaroslav, "Dynamic light scattering with single-mode and multimode receivers", May 20, 1993, Applied Optics, vol. 32, No. 15, pp. 2860-2875.

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