WO2010029519A2

WO2010029519A2 - A curing light device

Info

Publication number: WO2010029519A2
Application number: PCT/IB2009/054025
Authority: WO
Inventors: Or Ramot
Original assignee: Trd Instrum Ltd.
Priority date: 2008-09-15
Filing date: 2009-09-15
Publication date: 2010-03-18
Also published as: WO2010029519A3

Abstract

A curing light device (100) primarily for dental use for the polymerization of resin-based composites is provided with a short charge time through the use of a capacitor (13) as energy source.

Description

A CURING LIGHT DEVICE

FIELD OF THE INVENTION The present invention relates to curing light devices, more particularly, to a pen style, high power output, cordless light polymerization device for use in dentistry.

BACKGROUND OF THE INVENTION

Curing light devices are commonly used in dental clinics for the purpose of polymerization of resin-based composites. The clinical performance of light polymerized resin-based composites is greatly influenced by the quality of the light curing device. The efficiency and convenience of the dentist's work greatly depends on the structure, shape, dimensions, and weight of the light curing device, and particularly on the necessary charging time and the lighting time that the device is capable of.

The common sources of energy for curing light devices are the domestic power grid, namely connection of curing light devices to the grid by means of an electric cable, or rechargeable batteries. Dependency on a constant connection to the power grid is a disadvantage seeing as the electric cable complicates the dentist's work, while dependency on rechargeable batteries requires either excessively long intervals for charging or use of more than one curing light device. An additional drawback of using rechargeable batteries is their large size and weight, which weighs down the hand of the working dentist. United States Patent no. 7,182,597 (February 27, 2007), to Gill, which is incorporated by reference for all purposes as if fully set forth herein, discloses a curing light instrument. Figure Ia is a side view of the prior art schematic illustration of components of a curing light instrument 400 constructed in accordance with US Patent No. 7,182,597 to Gill, two side parts of which have been removed to show its content.

Curing light instrument 400 is a handheld portable instrument whice comprises a housing 1, a light emitted structure 2 supported in the housing 1, and a reflector 3 configured to interface with the light emitting structure 2 such that light emitted is captured and directed by the reflector 3 onto a light-curable compound.

Curing light instrument 400 may also have a self-contained power supply lending portability and convenient of use. The power supply may be a portable power supply, such as a battery 4, contained in the housing 1. Advantageously, battery 4 is a rechargeable battery contained in housing 1. Alternatively, the curing light instrument 400 may be powered by an external source such as an

AC power source coupled to a converter to supply DC power to the light emitting structure.

United States Patent no. 6,611,110 (August 26, 2003), to Fregoso which is incorporated by reference for all purposes as if fully set forth herein, discloses a photopolymerization apparatus. Figure Ib of the prior art is a side view schematic illustration of components of a photopolymerization apparatus 500 constructed in accordance with US Patent no. 6,611,110 to Fregoso, two side parts of which have been removed to show its content. Photopolymerization apparatus 500 delivers light of sufficient intensity to cause photopolymerization using a light emitted structure 2 such as single light emitting diode (LED). The single LED can be positioned internally within the apparatus or at the tip of the apparatus. When placed internally, a system of one or more lenses and/or known light focusing means or light guider 5 can be added to the device to further focus and intensify the light provided by the LED.

Photopolymerization apparatus 500 can be powered by batteries 4, one or more alkaline batteries, or rechargeable batteries, such as lithium ion or nickel metal hydride; or be plugged into a wall socket.

15 SUMMARY OF THE INVENTION

There is therefore a need for a cordless curing light device, whose necessary time for electrical charging is no longer than about several tens of seconds and provides lighting for an extended period of time, thus enabling the dentist to work without needless interruptions.

The curing light device according to at least some embodiments of the present invention overcomes these drawbacks of the background art, by providing a curing light device powered by at least one high power, high energy capacitor, such as a supercapacitor for example. Within the context of this application the term supercapacitor refers to capacitors that provide high energy density, for example including but not limited to electric double-layer capacitors, electrochemical double layer capacitors (EDLCs), or ultracapacitors as is known in the art. Optionally the device according to the present invention may comprise a KorChip DR2R3506 supercapacitor as is known in the art.. Optionally and preferably, the device according to the present invention charges rapidly as described herein. Optionally the device according to the present invention may be charged in time a frame of about ninety seconds, optional up to about sixty seconds, optionally and preferably up to about twenty seconds, optionally up to about fifteen seconds and more preferably from about ten seconds to about fifteen seconds. Optionally and preferably, the device according to the present invention may operate for at least about 40 to about 130 seconds. The curing light device according to an optional embodiment of the present invention preferably includes two units, a high power output cordless lighting unit, which also includes one or more high energy and high power capacitors, and a charging unit.

The design functionality of the high power output cordless lighting unit and of the charging unit resembles that of a pen and inkwell. This enables the dentist to perform polymerization, by removing the so-called pen from the so- called inkwell, lighting, and inserting it back into the inkwell for a few seconds at a time to recharge it as necessary. The high power output cordless lighting unit optionally and preferably includes a housing, at least one or more high-energy capacitors (for example including capacitors AKA ultra capacitors or super-capacitors), at least one or more control buttons for example including but not limited to a switch, user interface controller, user interface button, touch sense button or the like electronic circuit to control the current provided to at least one or more light emitting element, such as a LED for example a buck, boost or buck-boost (AKA SEPIC) circuit or the like current stabilizing circuitry as is known in the art, contacts to recharge the capacitors. According to the present invention there is provided a curing light device for polymerization of resin-based composites, the curing light device including: (a) a cordless lighting unit having predetermined form and dimensions, the cordless lighting unit includes: (i) a lighting unit housing; (ii) at least one capacitor disposed inside the lighting unit housing; and (iii) at least one light emitting element disposed inside the lighting unit housing, wherein the light emitting element is electronically connected to the at least one capacitor.

According to further features in described embodiments of the invention described below, the curing light device further including: (b) a charging unit having predetermined form and dimensions that fit the predetermined form and dimensions of the cordless lighting unit, the charging unit includes: (i) a charging unit housing; and (ii) a socket securely connected to the charging unit housing. According to further features in described embodiments of the invention described below, the at least one capacitor has an empty state to a full capacity state.

According to further features in described embodiments of the invention described below, the charging unit can charge electronically, the at least one capacitor, from an empty state to a full capacity state, at a time interval, wherein the period of time interval is up to about ninety seconds, more preferably up to about sixty seconds, most preferably up to about twenty seconds. Additional objects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is herein described, by way of example only, with reference to the accompanying drawings, wherein:

Figure Ia of the prior art is a side view schematic illustration of components of a curing light instrument constructed in accordance with US

Patent No. 7,182,597. Figure 2 is an isometric schematic illustration of an illustrative, exemplary embodiment of a curing light device, according to the present invention. Figure 3 a is a lower isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention.

Figure 3b is a lower isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention.

Figure 3 c is an upper isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention. Figure 3d is an upper isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention.

Figure 4a is a top view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention. Figure 4b is a side view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention.

Figure 4c is a bottom view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention, upon which section plane 4d-4d is marked. Figure 4d is a 4d-4d schematic cross sectional view illustration of an illustrative, exemplary embodiment of the cordless lighting unit, according to the present invention, the illustration marking detail A in a circle. Figure 5a is an isometric schematic illustration of an illustrative, exemplary embodiment of a charging unit, according to the present invention.

Figure 5b is a side view schematic illustration of an illustrative, exemplary embodiment of a charging unit, according to the present invention. Figure 5c is a top view schematic illustration of an illustrative, exemplary embodiment of a charging unit, according to the present invention.

Figure 5d is an isometric schematic illustration of an illustrative, exemplary embodiment of a charging unit, according to the present invention, in which part of the charging unit housing has been removed. Figures 6a-c are schematic electronic schemes of an illustrative, exemplary embodiments of the curing light device, according to the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS The principles and operation of a curing light device according to the present invention may be better understood with reference to the drawings and the accompanying description.

Before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The materials, dimensions, methods, and examples provided herein are illustrative only and are not intended to be limiting.

The following list is a legend of the numbering of the application illustrations: 1 housing (of the prior art)

2 light emitted structure (of the prior art)

3 reflector (of the prior art)

4 battery (of the prior art)

5 light guider (of the prior art) 10 heat sink

11 lighting unit housing

12 electrical contact

13 capacitor

14 operation button

15 first PCB

16 second PCB

17 light emitting element

18 lens

19 reflector 21 charging unit housing

22 handpiece recharging socket

23 third PCB

24 status indicator 25 power connector

26 charging unit energy storage element / internal power source 100 cordless lighting unit

200 charging unit 300 curing light device

400 curing light instrument (prior art)

500 photopolymerization apparatus (prior art)

602 Mains power supply

604 AC/DC charger adapter 610/611 charging base unit

612 charging unit controller

614b battery charging circuitry

614c super capacitor charging circuitry

618 charger discharge circuit

Referring now to the drawings, Figure 2 is an isometric schematic illustration of an illustrative, exemplary embodiment of a curing light device 300, according to the present invention.

A cordless lighting unit 100 is inserted into or otherwise associated with a charging unit 200. In this state, charging unit 200 may optionally be connected to an electrical power source (not shown) that may charge at least one or more capacitors housed within cordless lighting unit 100. Optionally, charging unit may comprise an internal power source (not shown here described in more detail in Figures 6A-6B) that most preferably will be used to provide the necessary power to charge at least one or more capacitors housed within cordless lighting unit 100.

Most preferably cordless lighting unit 100 has external design, dimensions, and weight to enable convenient and ergonomic use in the dentist' s hand, while providing effective lighting and illumination of any necessary place in the oral cavity.

Figure 3 a is a lower isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to an optional embodiment of the present invention.

A lighting unit housing 11 which may be made from plastic and/or from a suitable metal such as aluminum or a combination of suitable materials, holds internal elements of lighting unit 100 together. Lighting unit housing 11 is provided with at least one or more electrical contact 12, for the purpose of conducting a current from the charging unit 200 (not shown) while charging capacitors housed within lighting unit housing 11.

In another optional embodiment of the present invention cordless lighting unit 100 may be provided with inductive charging capabilities, wherein cordless lighting unit 100 may be provided without electrical contacts 12. Figure 3b is a lower isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention. Part of the lighting unit housing 11 has been removed in order to show internal components. Cordless lighting unit 100 most preferably comprises at least one or more capacitor 13. Capacitor 13 most preferably is provided with properties suitable for its designation, namely, to enable a brief charging time of about a few seconds, and supply of electric energy to lighting unit 100 which enables lighting at the necessary level for long times of about tens of seconds, or at a very high burst of power for about 1 to 2 seconds, usually with high capacitance such as at the range of 30 to 100 Farad, and low maximum voltage ratings such as at the range of about 2 to 5 Volts (Energy in the range of about 50 to 100 Joule). Optionally when provided with more than one capacitor 13, they may be connected in series or parallel according to suitable electronic control design. One optional such capacitor 13 is the PSHLR-0030C0-002R3 type capacitor, manufactured by NessCap^®, which has the specifications of : Rated Capacitance (discharge with constant current at 25°) of 30F, Max. Current (1 sec. discharge rate to 1/2V_R) of 14. IA, Stored Energy (at V_R) of 0.022Wh

Weight of 3.7gr. Length of 30 millimeter , and Diameter of 10 millimeter.

Figure 3c is an upper isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention. The lighting unit housing 11 is preferably provided with at least one operation button 14. The operation button 14 is preferably connected mechanically and electronically to a printed circuit board (herein referred to "PCB") (not shown in the present illustration), that enables user control and operation of the emitting and cessation of lighting from the cordless lighting unit 100.

Figure 3d is an upper isometric schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention. Part of the lighting unit housing 11 has been removed, in order to show internal components at least one or more capacitor 13 and operating button 14 as previously described in Figures 3b and 3d.

Figure 4a is a top view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention.

Figure 4b is a side view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention. Figure 4c is a bottom view schematic illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention, upon which section plane 4d-4d is marked.

Figure 4d is a 4d-4d schematic cross sectional view illustration of an illustrative, exemplary embodiment of the cordless lighting unit 100, according to the present invention, the illustration marking detail A in a circle.

Preferably, at least one or more light emitting element 17 emits light in a certain range of wavelengths most preferably in keeping with the curing properties required to bring about the polymerization of resin-based composites utilized. Optionally at least one or more light emitting element 17 may be provided in the form of a light bulb with a wide range of available wavelengths that may optionally and preferably be filtered to provide a required wavelength by means of a wavelength filter, and power to comply with the curing material sensitivity. Such light emitting element 17 may be, but is not limited to, at least one or more light emitting diode (herein referred to as "LED"). Optionally at least one or more light emitting element 17 may be provided in the form of an LED array.

One such optional LED is the LUXEON Rebel royal-blue LED, manufactured by Philips Lumileds™, operated between 35OmA and 1,00OmA, approximately 225mW of radiometric power.

Light emitted from at least one or more light emitting element 17 is most preferably reflected by a reflector 19 toward a lens 18. Lens 18 preferably directs light, emitted from at least one or more light emitting element 17, which is reflected onto it directly from reflector 19 and focuses light onto the desired location for the purpose of convenient performance of the procedure by the dentist.

A first electronic printed circuit board, a first PCB 15 comprising an electronic circuit (not shown) most preferably provides controls of the energy flow rate to at least one or more light emitting element 17, keeping it according to a controlled sequence per press of operation button 14. Optionally the controlled sequence may be provided as a constant current, or pulse currents or ramp up current or the like as is known in the art. Optionally, the electronic circuit (not shown) associated with PCB 15 may optionally consist of a buck, boost, buck-boost driver and a micro-controller, or the like. The driver circuitry (not shown) provided with PCT 15 is optionally and preferably dependent on the capacitor(s) 13 and capacitor configuration utilized (e.g. parallel or series) and on at least one or more light emitting element(s) 17 chosen and their configuration (e.g. parallel or serial).

A second PCB 16 is preferably provided to hold at least one or more light emitting element 17, optionally and preferably provided in the form of a surface mounted LED on PCB 16. Most preferably second PCB 16 is not directly linked or coupled to PCB 15 and is provided with a separation from first PCB 15 most preferably to provide at least one or more light emitting element 17 with an angle relative to first PCB 15.

Most preferably, a heat sink 10 serves for dispersal of the heat generated by at least one or more light emitting element 17 during operation. Figure 5a is an isometric schematic illustration of an illustrative, exemplary embodiment of a charging unit 200, according to the present invention. The charging unit 200 most preferably enables charging of at least one capacitor 13 with electricity, to full charge most preferably in short time interval in comparison with a similar charge level in prior devices. The charging unit 200 comprises charging unit housing 21 which maybe composed of at least one or more parts, optionally an preferably housing 21 is provided in two halves as shown in the illustrations, or of other configurations of two parts, or even more than two parts. Preferably the upper face of charging unit 200 comprises a handpiece recharging socket 22, with which a corresponding portion of cordless lighting unit 100 is electrically coupled for electrically charging cordless lighting unit 100 with power provided from charging unit 200. Optionally lighting unit 100 may be coupled with charging unit 200 via wireless, wire, contact, contactless, induction or the like electronic coupling. Optionally and preferably lighting unit 100 is charged by inserted into handpiece recharging socket 22, for the purpose of electric charging, similar to the insertion of a quill into an inkwell for charging with ink. Most preferably, the geometric shapes of socket 22 and of cordless lighting unit 100 are compatible, to allow for charging by electric contact and/or induction between them.

Figure 5b is a side view schematic illustration of an illustrative, exemplary embodiment of a charging unit 200, according to the present invention.

Power connectors 25 optionally protrude from charging unit housing 21, although they may also be provided in sunken and/or surface level formations relative to housing 21. Power connectors 25 enable power feed from an external source such as the domestic grid, Mains power supply (in this case, charging unit 200, as well as transformer and current AC to DC adaptor, not shown in the present illustration show in more detail in Figure 6A- C), or from a DC current source, for example a battery. Optionally and preferably charging unit 200 is provided with at least one status indicator 24 optionally and preferably for displaying the charge status of capacitor 13. For example, after a few seconds when the capacitor 13 is full, a green light of the status indicator 24 is lit. The status indicator 24 may also optionally show the status of a charging unit energy storage element 26 (not shown; shown in Figure 5d).

Figure 5c is a top view schematic illustration of an illustrative, exemplary embodiment of a charging unit 200, according to the present invention. Figure 5d is an isometric schematic illustration of an illustrative, exemplary embodiment of a charging unit 200, according to the present invention, part of whose charging unit housing 21 has been removed to reveal internal portions.

Removal of part of charging unit housing 21 reveals internal components, including a charging unit energy storage element 26, which may be provided in the form of rechargeable battery, to allow high power to flow from charging unit 200 to capacitor 13 while charging, and to provide a user the option of using curing light device 300 without charging unit 200 being connected permanently to an external and/or Mains power source. Figure 5d also reveals a third PCB 23 comprising an electric circuit that preferably serves to control the charging process for at least one or more capacitor 13 . Optionally and preferably PCB 23 may provide for control of the charging process for the charging unit energy storage element 26. Optionally PCB 23 may comprise an indicator, for example including but not limited to acoustic or optical indicators such as a buzzer and/or light, to indicate to a user the charge status.

Charging of capacitor 13 may optionally be provided by conducting an electric current through corresponding electrical contacts 12 respectively disposed on socket 22 and lighting unit 100, or optionally by way of induction. In order to perform a procedure with the light curing device 300 according to the present invention following charging cordless lighting unit 100 comprising at least one or more capacitor 13 with charging unit 200 optionally through an outside source of energy such as Mains power, the user holds the tip of the cordless lighting unit 100, in which at least one or more light emitting element 17 is disposed, in front of the material to be cured. The user then presses the operation button 14 and energy is transferred by a current control circuit optionally PCB 15 and PCB 16 from the capacitors to at least one or more light emitting element 17. Light is then optionally directed through filters 19 and lens 18 and is emitted onto the material to be cured.

Figures 6A-C provide schematic block diagrams of optional electronic circuitry of curing light device 300 according to optional embodiments of the present invention showing optional power configurations as depicted in a charging unit 610 and 611. Curing light device 300 comprises charging unit 610,611 (previously referred to as 200) and handpiece unit 100, an electrical adaptor 604 for example an AC/DC charger, as described above. Electrical adaptor 604 mediates electrical power provided to curing light device 300 and specifically to charging unit 610, 611 from the input mains power source 602. Handpiece unit 100 comprises at least one capacitor 13, contacts 12, controller 14, discharge circuit 15, at least one or more light source 17 as described above in Figures 2-4.

Figure 6A shows a schematic circuit diagram of an optional embodiment of curing light device 300 where charging unit 610 is provided with an internal power source 26, for example a battery, for charging handpiece unit 100 when charging unit 610 is not connected to the mains power supply 602. For example, such an internal power source may provide for mobile power and use of curing light device 300 allowing a user to optionally charge handpiece 100 without being connected to mains power supply 602. Optionally and preferably internal power source 26 may be provided in the form of rechargeable batteries as are known in the art and may be controllably charged with charging circuit 614b. Optionally internal power source may be provided in the form of non rechargeable batteries that may be replaced once their energy source is spent. Charger unit 610 circuit scheme may provide for charging handpiece 100, many times before internal power source 26 is spent requiring replenishment by recharging using adaptor 604 with mains power 602.

Most preferably controller 612 and discharge circuit 618 provide for controllable charging of handpiece 100 through contacts 12 optionally form internal power supply 26 or from mains power source 602 and adaptor 604.

Figure 6B provides a schematic circuit diagram of an optional embodiment of curing light device 300 comprising an internal power source 26 with a super capacitor charging circuit 614c which may optionally and preferably provide for a quick charge of handpiece 100, optionally providing a single handpiece charge time of up to about ninety seconds, optional up to about sixty seconds, optionally and preferably up to about twenty seconds, more preferably up to about fifteen seconds and most preferably from about ten seconds to fifteen seconds. Optionally internal power source 26 comprises at least one or more rechargeable battery. Optionally internal power source 26 comprises at least one or more super capacitor and/or at least one or more battery.

Figure 6C provides an optional embodiment of base unit 611 that does not comprise an internal power source 26 as described in base unit 610 of Figures 6A and 6B above. Base unit 611 is devoid of an internal power source and therefore requires both adaptor 604 and mains power 602 to recharge and/or power handpiece 100. Most preferably controller 612 and discharge circuit 618 provide controllable charging of handpiece 100 through contacts 12.

While the invention has been described with respect to a limited number of embodiments, it will be appreciated that many variations, modifications and other applications of the invention may be made.

Claims

WHAT IS CLAIMED IS:

1. A curing light device for polymerization of resin-based composites, the curing light device comprising:

(a) a cordless lighting unit having predetermined form and dimensions, said cordless lighting unit includes: (i) a lighting unit housing; and (ii) at least one capacitor disposed inside said lighting unit housing; and

(iii) at least one or more light emitting elements disposed inside said lighting unit housing, wherein said light emitting element is electronically connected to said at least one capacitor.

2. The curing light device of claim 1 wherein said lighting unit housing further comprises at least one or more electrical contacts for powering said at least one capacitor disposed on at least one face of said lighting unit housing.

3. The curing light device of claim 1 wherein said lighting unit housing is ergonomically designed for hand held use.

4. The curing light device of claim 1 wherein said at least one or more light emitting source is chosen from the group consisting of a broadband light source, full spectrum light source, spectrum range specific light source, wavelength specific light source, a light source array, full spectrum LED, wavelength specific LED, spectrum range specific LED, and LED array.

5. The curing light device of claim 1 wherein said lighting unit housing further comprising at least one filter provided for filtering light emitting from said light emitting source.

6. The curing light device of claim 1 wherein said lighting unit housing further comprising at least one lens provided for focusing and/or directing light emitting from said light emitting source.

7. The curing light device of claim 1 further comprising:

(b) a charging unit having predetermined form and dimensions corresponding to said predetermined form and dimensions of said cordless lighting unit, said charging unit includes:

(i) a charging unit housing; and

(ii) at least one or more electrical contacts for electrically coupling said charging unit housing with said cordless lighting unit.

8. The curing light device of claim 7 wherein said at least one capacitor has an empty state to a full capacity state.

9. The curing light device of claim 8 wherein said charging unit can charge electronically, said at least one capacitor, from an empty state to a full capacity state, within a time interval, wherein said time interval is at most ninety seconds.

10. The curing light device of claim 7 wherein said at least one or more electrical contacts are provided within a socket on a face of said charging unit housing; and wherein said socket comprises predetermined form and dimensions provided for securely fitting with said predetermined form and dimensions of said cordless lighting unit.

11. The curing light device of claim 7 wherein said charging unit housing further comprises an internal power supply source.

12. The curing light device of claim 11 wherein said internal power supply source is chosen from at least one or more of the group consisting of a battery, rechargeable battery, super capacitor, or any combination thereof.

13. The curing light device of claim 1 further comprising:

(i) a charging unit housing; and (ii) a socket for securely coupling said cordless lighting unit to said .charging unit housing.

14. The curing light device of claim 1 wherein said cordless lighting unit is provided with inductive charging capabilities.

15. The device of claim 13 wherein said charging unit is provided with inductive charging capabilities.

16. A curing light device for polymerization of resin-based composites, the curing light device comprising:

(a) a cordless lighting unit having predetermined form and dimensions, said cordless lighting unit includes: (i) a lighting unit housing; (ii) at least one capacitor disposed inside said lighting unit housing; and (iii) at least one or more lighting unit electrical contact for powering said at least one capacitor wherein said lighting unit electrical contact is disposed on a face of said lighting unit housing; and (iv) at least one light emitting element is disposed inside said lighting unit housing, wherein said light emitting element is electronically connected to said at least one capacitor; and

(b) a charging unit for charging said cordless lighting unit having predetermined form and dimensions corresponding to said predetermined form and dimensions of said cordless lighting unit, said charging unit includes: (i) a charging unit housing; and

(ii) at least one or more electrical contacts for electrically coupling said charging unit housing to said cordless lighting unit over said lighting unit electrical contact.

17. The device of any of claims 1-16 wherein said capacitor is a supercapacitor.

18. The device of any of claims 1-16 wherein each of said at least one or more capacitors provides said cordless lighting unit with operational power for a period of about 40 to 130 seconds.

19. The device of claim 18, wherein said one or more capacitors collectively provide operational power for a period of about 40 to 130 seconds.

20. The device of any of claims 7-16 wherein said charging unit provides said cordless lighting unit with operational power within a time period of about ninety seconds.

21. The device of claim 20, wherein said time period is up to about sixty seconds.

22. The device of claim 21, wherein said time period is up to about twenty seconds.

23. The device of claim 22, wherein said time period is up to about fifteen seconds.

24. The device of claim 23, wherein said time period is from about ten seconds to about fifteen seconds.