Movable ultraviolet radiation source

• US 10,010,100 B2
• Filed: 07/10/2017
• Issued: 07/03/2018
• Est. Priority Date: 09/30/2014
• Status: Active Grant

• Current Assignee: Sensor Electronic Technology Incorporated (Seoul Semiconductor Co., Ltd.)
• Original Assignee: Sensor Electronic Technology Incorporated (Seoul Semiconductor Co., Ltd.)
• Inventors: Dobrinsky, Alexander, Shur, Michael, Gaska, Remigijus
• Primary Examiner(s): IPPOLITO, NICOLE MARIE
• Application Number:
  US15/645,390
• Publication Number:
  US 20170303567A1
• Time in Patent Office: 358 Days
• Field of Search: 422 22, 422 24, 25045311, 25045411, 25045511, 2504921, 250504 R, 250504 H
• CPC Class Codes: A23L 3/28 with ultraviolet light
• CPC Class Codes: B65D 81/24 Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with thermal insulation B65D81/38

Abstract

A solution for treating a surface with ultraviolet radiation is provided. A movable ultraviolet source is utilized to emit a beam of ultraviolet radiation having a characteristic cross-sectional area smaller than an area of the surface to be treated. The movable ultraviolet source can be moved as necessary to directly irradiate any portion of the surface with radiation within the characteristic cross-sectional area of the beam of ultraviolet radiation. The movement can include, for example, rotational movement and/or repositioning the movable ultraviolet source with respect to the surface.

Claims

1. A container comprising:

a body defining an interior area, wherein at least a portion of an interior surface of the body is formed of an ultraviolet reflective material;

at least one object having a surface targeted for treatment contained within the interior area;

a movable ultraviolet source, wherein the movable ultraviolet source emits a beam of ultraviolet radiation having a characteristic cross-sectional area smaller than an area of the surface in each direction, wherein the movable ultraviolet source includes;

an ultraviolet light source configured to emit ultraviolet light; and

an ultraviolet transparent light guiding structure configured to redirect at least a portion of the ultraviolet light emitted from the ultraviolet light source to form the beam of ultraviolet radiation; and

means for moving the movable ultraviolet source to irradiate any portion of the surface with radiation within the characteristic cross-sectional area of the beam of ultraviolet radiation.

2. The container of claim 1, wherein the ultraviolet reflective material is a reflective fluoropolymer.

3. The container of claim 1, wherein the ultraviolet reflective material has a diffusive reflectivity.

4. The container of claim 1, wherein the surface is configured to move relative to the movable ultraviolet source.

5. The container of claim 1, wherein the means for moving includes means for rotating the movable ultraviolet source.

6. The container of claim 1, wherein the means for moving includes means for repositioning the movable ultraviolet source with respect to the surface.

7. The container of claim 1, further comprising a computer system configured to operate the means for moving and the movable ultraviolet source to treat the area of the surface with ultraviolet radiation of a target dose.

8. The container of claim 7, further comprising means for acquiring feedback data corresponding to at least one of:

a location of the area of the surface to be treated or a location of a current area of the surface being irradiated by the beam of ultraviolet radiation, wherein the computer system adjusts operation of the means for moving based on the feedback data.

9. The container of claim 1, wherein the movable ultraviolet source and the means for moving are located in a removable cover of the container.

10. A treatment device comprising:

a movable ultraviolet source, wherein the movable ultraviolet source emits a beam of ultraviolet radiation having a characteristic cross-sectional area smaller than an area of a surface to be treated in each direction, wherein the movable ultraviolet source includes;

a set of ultraviolet light sources; and

a wave guiding structure comprising ultraviolet transparent material, wherein the wave guiding structure is configured to collimate ultraviolet light emitted by the set of ultraviolet light sources;

means for moving the movable ultraviolet source to irradiate any portion of the surface with radiation within the characteristic cross-sectional area of the beam of ultraviolet radiation; and

a computer system configured to operate the means for moving and the movable ultraviolet source to treat the area of the surface with ultraviolet radiation of a target dose while accounting for at least one of;

divergence of the beam or an angle of the beam with respect to the surface.

11. The device of claim 10, wherein the ultraviolet transparent material comprises an ultraviolet transparent fluoropolymer.

12. The device of claim 10, wherein the means for moving enables rotation of the movable ultraviolet source through a range of angles about at least one axis.

13. The device of claim 10, wherein the means for moving enables repositioning of the movable ultraviolet source with respect to the surface to be treated.

14. The device of claim 10, wherein the movable ultraviolet source further includes a mechanism for adjusting a focus of the beam.

15. The device of claim 14, wherein the mechanism includes a lens.

16. An enclosure comprising:

a body defining an interior area, wherein at least a portion of an interior surface of the body is formed of an ultraviolet reflective material;

an object contained within the interior area, the object having a surface targeted for treatment; and

a removable cover configured to selectively enclose the interior area, wherein the removable cover includes;

a movable ultraviolet source mounted to an interior surface of the enclosure, wherein the movable ultraviolet source emits a beam of ultraviolet radiation having a characteristic cross-sectional area smaller than an area of the surface; and

means for moving the movable ultraviolet source to directly irradiate any portion of the surface with ultraviolet radiation within the characteristic cross-sectional area of the beam of ultraviolet radiation.

17. The enclosure of claim 16, wherein the object is a consumable object, and wherein a location of the surface varies according to an amount of the consumable object.

18. The enclosure of claim 16, further comprising:

a computer system configured to operate the means for moving and the movable ultraviolet source to treat the area of the surface with ultraviolet radiation of a target dose; and

means for acquiring feedback data corresponding to at least one of;

a location of the area of the surface to be treated or a location of a current area of the surface being irradiated by the beam of ultraviolet radiation, wherein the computer system adjusts operation of the means for moving based on the feedback data.

19. The enclosure of claim 18, further comprising means for acquiring feedback data corresponding to at least one of:

a visual appearance, a presence of microorganisms, or fluorescence, of the surface of the object, wherein the computer system is further configured to operate the means for moving and the movable ultraviolet source using the feedback data.

20. The enclosure of claim 16, wherein the movable ultraviolet source includes:

a set of ultraviolet light emitting diodes; and

an ultraviolet transparent light guiding structure configured to form the beam of ultraviolet radiation from light emitted by the set of ultraviolet light emitting diodes.