Immersion Refractometer
AssigneeJoseph Samuel Accetta
InventorJoseph Samuel Accetta
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Abstract
A device for measuring the absolute value of the refractive index of a liquid by immersion uses the optical properties of a cylindrical waveguide with a solid core and normal angle of incidence of the light source. The device consists of a transparent tube forming the enclosure of the waveguide, impervious to the surrounding liquid and partially filled with a transparent solid or liquid material of appropriate index of refraction, a fiber optic means of inputting light via a LED or laser and fiber optic means of coupling emerging light to a photodetector. The emerging light intensity is a function of the index of refraction of the surrounding liquid.
Claims18
A device for measuring the refractive index of a liquid comprising a transparent tube partially filled with a solid or liquid transparent material, a fiber optic means of inputting light via an LED or laser and a fiber optic means of coupling emerging light to a photodetector such that the input light and emerging light are at the same end of the tube.
Dependencies are inferred from the claim text.