Dental light device

• US 9,072,572 B2
• Filed: 06/21/2013
• Issued: 07/07/2015
• Est. Priority Date: 04/02/2009
• Status: Active Grant

• Current Assignee: Kerr Corporation (Envista Holdings Corporation)
• Original Assignee: Kerr Corporation (Envista Holdings Corporation)
• Inventors: Gill, Owen J., Barry, Ruth, Soundararajan, Gopikrishnan, Wyatt, Stacy L.
• Primary Examiner(s): Bowman, Mary Ellen
• Application Number:
  US13/924,439
• Publication Number:
  US 20140038124A1
• Time in Patent Office: 746 Days
• Field of Search: 362/373
• US Class Current: 1/1
• CPC Class Codes: A61C 19/004 Hand-held apparatus, e.g. guns
• CPC Class Codes: A61C 2204/002 using batteries
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/375 using buck topology
• CPC Class Codes: H05B 45/38 using boost topology
• CPC Class Codes: H05B 45/385 using flyback topology
• CPC Class Codes: H05B 45/397 Current mirror circuits
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A light device includes a body and a tip structure configured to be removably coupled with the housing. The tip includes a light engine that is operable for emitting light positioned at a distal end of the tip. A power supply circuit is positioned in the housing and coupled to the light engine. The power supply circuit is rechargeable and includes at least one ultracapacitor element. A non-imaging element is coupled with the light engine at the distal end.

Claims

1. A curing light device comprising:

a body including a housing and a socket at an end thereof;

a tip having a proximal end and a distal end, the proximal end configured for plugging into the body socket to removably secure the tip with the body;

the tip including a plurality of body elements formed of an electrically and thermally conductive material, the body elements electrically isolated from each other to form separate electrical conductors in the tip and collectively operating to provide thermal conduction of heat in the tip;

a light engine including at least one light emitting element operable for emitting light, the light engine positioned on the distal end of the tip and electrically coupled with the tip body elements to receive power and thermally coupled with the tip body elements for removing heat;

a non-imaging element coupled with the light engine at the distal end of the tip for capturing and collimating the emitted light;

a power supply positioned in the body housing and electrically coupled with electrical contacts in the socket, the tip body elements engaging the socket electrical contacts to conduct electrical enerqy to power the light engine, the power supply being rechargeable and including at least one ultracapacitor element.

2. The curing light device of claim 1 further comprising a magnetic mechanism configured for removably securing the tip in the socket.

3. The curing light device of claim 2 wherein the magnetic mechanism provides a force in the range of 0.5 to 6 pounds for securing the tip in the socket.

4. The curing light device of claim 2 wherein the magnetic mechanism includes a rare earth magnet.

5. The curing light device of claim 1 wherein the tip body elements come together to form the tip and are separated by an insulator element to electrically isolate the body elements.

6. The curing light device of claim 1 wherein the body elements of the tip are operable for drawing heat away from the light engine and the distal end of the tip.

7. The curing light device of claim 1 wherein the power supply further comprises a pair of ultracapacitors.

8. The curing light device of claim 1 wherein the power supply is operable for providing an operational run time of at least one minute.

9. The curing light device of claim 1 wherein the power supply is operable for providing an operational run time of up to 10 minutes.

10. The curing light device of claim 1 wherein power supply is operable for providing an operational run time of approximately 250 seconds.

11. The curing light device of claim 1 wherein the light engine includes three light emitting elements, the light engine operable for providing an output power of 1100-1800 mW/cm².

12. The curing light device of claim 6 wherein the body elements of the tip are configured to draw heat away from the distal end of the tip and prevent a rise in the temperature of the pulp of a tooth being cured greater than 5 degrees Centigrade.

13. The curing light device of claim 1 wherein the tip body elements are configured to form contact structures at the proximal end of the tip, the contact structures engaging the socket electrical contacts to conduct electrical energy.

14. The curing light device of claim 1 wherein at least one of the body elements has a solid portion and a hollowed out portion along the length of the body element.

15. The curing light device of claim 1 wherein the tip has a base that is wider than the proximal end, the proximal end of the tip extending beyond the base for plugging into the body socket.

16. The curing light device of claim 2 wherein the magnetic mechanism includes a magnet coupled with one of the body and the tip and a metal element coupled with the other of the body and the tip for removably securing the tip in the socket.

17. The curing light device of claim 1 further comprising a charger base for receiving the device body to recharge the power supply, the charger base providing a gravity force and including a plug that is configured to be received by a socket in the device body, the plug and socket requiring a removal force to separate the device and charger base that is less than the gravity force of the charger base to facilitate one hand removal of the light device from the charger base.

18. The curing light device of claim 1 wherein the charger base includes a radiometer sensor operable for measuring a light output of the light device.

19. The curing light device of claim 1 wherein the non-imaging element is a non-imaging lens having a frustoconical section.