Fiber optic load sensing device

Details Fiber optic load sensing device Fiber optic load sensing device

1990-04-10

1991-10-15

Lee, John D.

Optical waveguides

Optical waveguide sensor

Including physical deformation or movement of waveguide

385 32, 385 51, G02B 626

Patent

active

050568841

ABSTRACT:
A transverse load sensitive optical treadle switch. The switch includes a deformable longitudinal housing and a fiber optic assembly positioned within the housing. The fiber optic assembly includes an optical fiber having a first end and a second end, the optical fiber being subject to bending upon application of a transverse load to said housing. Means for mounting the optical fiber in the housing so as to permit bending of the fiber in response to application of a transverse load to said housing are provided, the degree of bending being sufficient to cause a significant decrease in passage of light through said fiber when said fiber is bent. Means permitting introduction of light into said optical fiber at the first end of the optical fiber and means for permitting the exit of light from the second end are also provided.

REFERENCES:
patent: 4443700 (1984-04-01), Macedo et al.
patent: 4455465 (1984-06-01), Habeger
patent: 4482203 (1984-11-01), Stowe et al.
patent: 4488040 (1984-12-01), Rowe
patent: 4749246 (1988-06-01), Epworth et al.
patent: 4795232 (1989-01-01), Persson
patent: 4830461 (1989-05-01), Ishiharada et al.
patent: 4927232 (1990-05-01), Griffiths

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