Cone-shaped lens having increased forward light intensity and kits incorporating such lenses

• US 6,940,659 B2
• Filed: 12/23/2002
• Issued: 09/06/2005
• Est. Priority Date: 01/11/2002
• Status: Expired due to Fees

• Current Assignee: Ultradent Products Incorporated
• Original Assignee: Ultradent Products Incorporated
• Inventors: Fischer, Dan E., McLean, Bruce S., Nosov, Vasiliy
• Primary Examiner(s): Epps, Georgia
• Assistant Examiner(s): Harrington, Alicia M.
• Application Number:
  US10/328,510
• Publication Number:
  US 20030142413A1
• Time in Patent Office: 988 Days
• Field of Search: 359707-712, 359/809, 433 29- 31
• US Class Current: 359/709
• CPC Class Codes: A61C 19/004 Hand-held apparatus, e.g. guns
• CPC Class Codes: G02B 3/04 with continuous faces that are rotationally symmetrical but deviate from a true sphere , e.g. so called "aspheric" lenses
• CPC Class Codes: G02B 7/02 for lenses supports for magnifying lenses G02B25/002

Abstract

The invention is directed to lenses having thin walls and a generally conical shape for use with dental light-curing devices. The conical or otherwise tapered shape enables the apex of the lenses to be inserted at least partially within a dental preparation (e.g., a Class II dental preparation). The thin walls allow the light emitted from the light-curing device to pass through the lens and apex without being undesirably refracted, thereby enabling light to be emitted directly in front of the apex with sufficient intensity to cure light-curable compounds within the dental preparation.

Claims

1. A lens for use with a light-curing device and that is sized and configured to be inserted at least partially within a dental preparation, the lens comprising:

a hollow body that has a tapered profile and that includes a hollow interior region therewithin, the hollow body comprising;

a base circumferentially extending around the body that is configured to be connected with the light-curing device in such a manner that light emitted from the light-curing device passes through the lens when in use; and

a wall extending outwardly from the base and converging at an apex,

the wall and apex bounding the hollow interior region,

the wall and apex being configured such that, when the lens is coupled to a light curing device, light emitted by the light curing device passes through the hollow interior region before reaching the apex in order for the lens to transmit an increased quantity of light emitted by the light curing device through the apex in a forward direction when in use compared to a tapered lens that does not include a hollow interior region.

2. A lens as recited in claim 1, the hollow body having a substantially conical profile in which the wall and apex define a substantially conical void as the hollow interior region.

3. A lens as recited in claim 1, wherein light emitted from the light-curing device in a forward direction passes through the lens to an area directly in front of the apex when in use.

4. A lens as recited in claim 1, wherein the hollow body comprises at least one of plastic, aluminum dioxide, sapphire, quart, or glass.

5. A lens as recited in claim 1, wherein the hollow body is comprises at least one of acrylic, polyacrylic, polypropylene, polycarbonate, or silicone.

6. A lens as recited in claim 1, wherein the hollow body is color tinted to filter selected wavelengths of light.

7. A lens as recited in claim 1, wherein the Lens is configured such that the apex can be inserted at least partially within a Class II dental preparation.

8. A lens as recited in claim 1, wherein the lens is configured to engage a light-curing device with a snap-fit connection.

9. A lens as recited in claim 1, wherein the base is configured to fixedly engage an intermediary lens that is mounted on a light-curing device.

10. A lens as recited in claim 9, wherein the lens is configured to engage the intermediary lens with a snap-fit connection.

11. A lens as recited in claim 1, wherein the wall and apex have a substantially uniform thickness such that the thickness of the wall and apex are substantially similar.

12. A lens as recited in claim 1, wherein the wall and apex have varying thicknesses.

13. A lens as recited in claim 1, wherein the wall has a thickness within a range of about 0.1 mm to about 2 mm.

14. A lens as recited in claim 1, wherein the wall has a thickness within a range of about 0.2 mm to about 1 mm.

15. A lens as recited in claim 1, wherein the wall has a thickness within a range of about 0.25 mm to about 0.5 mm.

16. A cone-shaped lens in combination with a light-curing device, the cone-shaped lens being sized and configured so as to be inserted at least partially within a dental preparation, the cone-shaped lens comprising:

a hollow body having a substantially conical profile and defining a substantially conical void within the hollow body, the hollow body comprising;

a base circumferentially extending around the body that is connected with the light-curing device and in such a manner that light emitted from the light-curing device passes through the lens; and

a wall extending outwardly from the base and converging at an apex,

the wall and apex being configured and positioned such that light emitted by the light-curing device passes through the substantially conical void before reaching the apex in order for the lens to transmit an increased quantity of light emitted by the light-curing device through the apex in a forward direction when in use compared to a tapered lens that does not include a hollow interior region.

17. A cone-shaped lens as recited in claim 16, wherein the lens is detachably connected to the light-curing device by at least one of a snap-fit, a friction fit, a threaded coupling, or a bayonet coupling.

18. A cone-shaped lens as recited in claim 16, wherein the lens is detachably connected to the light-curing device by an intermediary lens disposed between the light-curing device and the lens and wherein the lens is detachably connected to the intermediary lens.

19. A cone-shaped lens as recited in claim 16, wherein the lens is detachably connected to the light-curing device by an intermediary lens disposed between the light-curing device and the lens and wherein the lens is integrally connected to the intermediary lens.

20. A cone-shaped lens as recited in claim 16, wherein the lens is comprises at least one of acrylic, polyacrylic, polypropylene, polycarbonate, silicone, aluminum dioxide, sapphire, quartz, or glass.

21. A cone-shaped lens as recited in claim 16, wherein at least a portion of the lens is color tinted.

22. A cone-shaped lens as recited in claim 16, wherein the wall and apex have a substantially uniform thickness such that the thickness of the wall and apex are substantially similar.

23. A cone-shaped lens as recited in claim 16, wherein the wall and apex have varying thicknesses.

24. A kit for interchangeable tapered lenses for use with a light-curing device, each tapered lens being sized and configured to be inserted at least partially within a dental preparation, each tapered lens comprising:

a hollow body that has a tapered profile and that includes a hollow interior region therewithin, the hollow body comprising;

a base circumferentially extended around the body that is configured to be connected with the light curing device in such a manner that light emitted from the light curing device is enabled to pass through the lens; and

a wall extending outwardly from the base and converging at an apex,

the wall and apex being configured such that, when coupled to a light-curing device, the lens is able to transmit an increased quantity of light emitted by the light-curing device through the apex in a forward direction when in used compared to a tapered lens that doe not include a hollow interior region,

the wall and apex bounding the hollow interior region, the wall and apex being configured such that, when the lens is coupled to light-curing device, light emitted by the light curing device passes through the hollow interior region before reaching the apex in order for the lens to transmit an increased quantity of light emitted by the light-curing device through the apex in a forward direction when in use compared to a tapered lens that does not include a hollow interior region.

25. A kit as recited in claim 24, wherein each tapered lens is detachably connectable with the light-curing device by at least one of a snap-fit, a friction fit, a threaded coupling, or a bayonet coupling.

26. A kit as recited in claim 24, wherein at least one of the lenses in the kit comprises at least one material selected from the group comprising acrylic, polyacrylic, polypropylene, polycarbonate, silicone, aluminum dioxide, sapphire, quartz, and glass.

27. A kit as recited in claim 24, wherein at least one of the lenses in the kit is color tinted.

28. A kit as recited in claim 24, wherein at least one of the lenses in the kit has a substantially conical profile.