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US 5,430,542 AGranted
Disposable optical cuvette
AssigneeAVOX Systems Inc.
InventorA. P. Shepherd
Life of this patent
Estimating the term…
Abstract
A method and apparatus for making cuvettes. The cuvette comprises two optically transparent liquid impermeable plastic sheets. A third "sticky" sheet is inserted between the two transparent plastic sheets and the three sheets are pressure sealed together. The thickness of the "sticky" sheet defines the optical pathlength of the turbid media. The "sticky" sheet has cut outs defining the contour of an optical chamber, inlet port and vent port.
Claims11
A method for producing an optical cuvette comprising:
- forming a cut-out for defining an optical chamber of selected volume and shape in a plastic film having adhesive layers in both sides thereof and having a selected thickness that defines an optical pathlength perpendicular to the longitudinal axis of said film;
- and
- assembling two optically transparent substantially flat sheets of plastic with said plastic film disposed intermediate said transparent sheets in a sandwich relationship such that said adhesive layers on the sides of said plastic film secure said two transparent flat sheets together to provide a liquid tight seal and wherein the resulting assembly comprises an optical cuvette having an optical chamber of selected volume and shape, and an optical pathlength equal to the thickness of said plastic film.
Dependencies are inferred from the claim text.