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Immersible Fiber Optic Probe

IP.com Disclosure Number: IPCOM000083686D
Original Publication Date: 1975-Jul-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 33K

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Related People

Bloem, HH: AUTHOR [+2]


Probe P is used in applications such as absorption spectroscopy.

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Immersible Fiber Optic Probe

Probe P is used in applications such as absorption spectroscopy.

The bifurcated end 10 of a pair of flexible fiber optic cables 11, 12 are fitted with a demountable adapter 13. Suspended from adapter 13 by a pair of elongated brackets 14 and in facing relationship with end 10 is a reflector 15.

In operation, probe P is immersed in a fluid sample or specimen S carried in the cell C. As a result, fluid passes through the two openings formed between brackets 14, thus providing a fixed, i.e., uniform, volume of sample S in the distance D between end 10 and reflector 15.

Light is projected into the nonimmersed input end 11A of cable 11, from where it is transmitted by cable 11 and emerges out end 10. The emitted light passes through sample S and is reflected by reflector 15 back through sample S and into end 10. The reflected light is picked up by cable 12 and is then transmitted to and out of its nonimmersed output end 12A.

End 10 preferably has a circular cross-sectional configuration, with the fiber optic elements of cables 11 and 12 being confined to mutually exclusive semicircular cross-sectional halves of end 10. Reflector 15 is a concave first surface spherical reflector, and when combined with the described configuration of end 10 provides an optimal or efficient system, i.e., provides the least amount of light loss.

Alternatively, reflector 15 may be a second surface concave spherical reflector, or a second surface convex-concave...