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US 6,268,458 B1Granted
Coupler fluids for projection televisions
AssigneeCorning Precision Lens
InventorsDavid S. Soane, Zoya M. Soane
Life of this patent
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AssigneeCorning Precision Lens
InventorsDavid S. Soane, Zoya M. Soane
Estimating the term…
Coupling fluids for use in optically coupling a projection lens system of a projection television to a cathode ray tube (CRT (16)) are provided. The fluids have: (1) at least one polymer having a siloxane backbone, i.e., at least one polymer having a —Si—O—Si—O—Si— backbone, and (2) methyl, phenyl, and hydrophilic groups attached to the silicon atoms of the backbone. The fluid can be composed of a single siloxane polymer having methyl, phenyl, and hydrophilic side groups or a mixture of a siloxane polymer having methyl and phenyl side groups with a siloxane polymer having methyl and hydrophylic side groups. The index of refraction of the fluid is preferably greater than 1.52 so as to minimize reflections at the interface between the fluid and the faceplate (17) of the CRT (16).
A coupling fluid for coupling a projection lens system to a cathode ray tube, said fluid comprising a mixture of:
A coupling fluid for coupling a projection lens system to a cathode ray tube, said fluid comprising a siloxane polymer having methyl, phenyl, and hydrophilic side groups wherein the fluid has a phenyl side group content sufficient to provide the fluid with an index of refraction equal to or greater than 1.53 at room temperature.
A projection television comprising a cathode ray tube and a projection lens wherein the projection lens is liquid coupled to the cathode ray tube by a coupling fluid comprising a mixture of:
A projection television comprising a cathode ray tube and a projection lens wherein the projection lens is liquid coupled to the cathode ray tube by a coupling fluid comprising a siloxane polymer having methyl, phenyl, and hydrophilic side groups.
An article of manufacture comprising a cathode ray tube and a lens element wherein the lens element is liquid coupled to the cathode ray tube by a coupling fluid comprising a mixture of:
An article of manufacture comprising a cathode ray tube and a lens element wherein the lens element is liquid coupled to the cathode ray tube by a coupling fluid comprising a siloxane polymer having methyl, phenyl, and hydrophilic side groups.
Dependencies are inferred from the claim text.