The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2020
Filed:
Dec. 12, 2019
Retinal 3-d, L.l.c., Mesa, AZ (US);
Roger C. Bowser, Mesa, AZ (US);
Retinal 3-D, L.L.C., Mesa, AZ (US);
Abstract
A lighting tube for uniform illumination is disclosed. The lighting tube includes a conduit having an inner layer, outer layer, and a middle layer between the inner and outer layers. The middle layer has at least two of a phosphor film, a diffusion film, and a UV-blocking film. The lighting tube also includes a light emitting chain located inside of the conduit. The light emitting chain includes control wires and a plurality of light emitting units spaced along the control wires. Each unit has a plurality of faces interconnected to form a polygon when viewed along a central axis, with each face being on a different side of the polygon. Each face has an LED coupled to the control wires. The LED emits light with a wavelength that causes the phosphor film to luminesce. The illumination of the middle layer by the chain is substantially uniform in all radial directions.