Lighting System

• US 20100259220A1
• Filed: 06/23/2010
• Published: 10/14/2010
• Est. Priority Date: 01/25/2008
• Status: Abandoned Application

• Current Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Original Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Inventors: Crawford, John D., Hoffman, Peter F., Spartano, David A.
• Application Number:
  US12/821,254
• Publication Number:
  US 20100259220A1
• Time in Patent Office: Days
• US Class Current: 320/116
• CPC Class Codes: F21L 4/02 characterised by the provision of two or more light sources
• CPC Class Codes: F21V 23/0414 specially adapted to be used with portable lighting devices
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 5/006 applied to portable lighting devices
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21W 2111/10 for personal use, e.g. hand-held
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/18 using temperature feedback
• CPC Class Codes: H05B 45/32 Pulse-control circuits
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/56 involving measures to prevent abnormal temperature of the LEDs
• CPC Class Codes: H05B 47/10 Controlling the light source

Abstract

An energy storage system includes battery cells and a controller. The battery cells include first and second cells. The controller controls a current to the first and second cells, such that a first charging method is utilized when a voltage potential of the first and second cells is less than a first voltage potential threshold, and a second charging method is utilized when the voltage potential of the first and second cells is equal to or greater than the first voltage potential threshold. The first charging method charges at least one of first and second cells at a greater rate than second charging method, and first charging method is utilized to charge first cell prior to being utilized to charge said second cell when said voltage potential of first cell is below the first voltage potential threshold and greater than the voltage potential of the second cell.

Claims

1. A lighting device comprising:

a plurality of lighting sources;

a plurality of first optical lenses, each of said plurality of first optical lenses being in optical communication with one of said plurality of lighting sources; and

a second lens comprising;

a plurality of portions, each of said plurality of portions being in optical communication with one corresponding lighting source of said plurality of lighting sources and one corresponding first optical lens of said plurality of first optical lenses; and

a plurality of surface configurations, wherein one of said plurality of surface configurations is formed on one corresponding portion of said plurality of portions to control an illumination pattern of said emitted light.

2. The lighting device of claim 1, wherein a first surface configuration of said plurality of surface configurations is a flood surface configuration, such that light emitted from said corresponding lighting source and reflected by said corresponding first optical lens are directed to create a flood pattern.

3. The lighting device of claim 1, wherein a second surface configuration of said plurality of surface configurations is a spot surface configuration, such that light emitted from said corresponding lighting source and reflected by said corresponding first optical lens is emitted to create a spot pattern.

4. The lighting device of claim 1 further comprising a housing configured to enclose said plurality of lighting sources, said plurality of first optical lenses, and said second lens, wherein said second lens is substantially fixedly coupled to said housing.

5. The lighting device of claim 1, wherein at least a portion of said plurality of first optical lenses is a conically shaped optical lenses.

6. The lighting device of claim 1, wherein at least a portion of said plurality of first optical lenses is a total internal reflection (TIR) lens.

7. The lighting device of claim 1, wherein one of said plurality of first optical lenses is a cone shape having a deeper focal point with respect to a top defining an opening where light is directed out of said first optical lens than at least one other of said plurality of first optical lenses.

8. The lighting device of claim 7, wherein said cone shaped optical lens having said deeper focal point is a multiple-part optical lens, such that said cone shaped optical lens comprises multiple parts that are attached to form said cone shaped optical lens.

9. The lighting device of claim 1, wherein said at least portion of said plurality of first optical lenses comprises a polycarbonate material.

10. The lighting device of claim 1, wherein said second lens comprises a polymethylmethacrylate (PMMA) material.

11. The lighting device of claim 1, wherein a first lighting source of the plurality of lighting sources, a first optical lens of said plurality of first optical lenses, and a first portion of said second lens of said plurality of portions are configured to project light in a first illumination pattern, and a second lighting source of said plurality of lighting sources, a second optical lens of said plurality of first optical lenses, and a second portion of said second lens of said plurality of portions are configured to project light in a second illumination pattern, and said first and second illumination patterns at least partially overlap to form a third illumination pattern.

12. The lighting device of claim 11 further comprising a controller for controlling first and second intensities of said first and second illumination patterns, respectively, with respect to one another, wherein said third illumination pattern is altered when said controller alters said first and second intensities.

13. An energy storage system comprising:

a plurality of battery cells configured to be electrically connected to a power source, said plurality of battery cells comprising;

a first battery cell; and

a second battery cell; and

a controller in communication with said first and second battery cells, said controller controls an electrical current supplied to said first and second battery cells, such that a first charging method is utilized when a voltage potential of said first and second battery cells is less than a first voltage potential threshold, respectively, and a second charging method is utilized when said voltage potential of said first and second battery cells is equal to or greater than said first voltage potential threshold, wherein said first charging method charges at least one of said first and second battery cells at a greater rate than said second charging method, and said first charging method is utilized to charge said first battery cell prior to being utilized to charge said second battery cell when said voltage potential of said first battery cell is below said first voltage potential threshold and greater than said voltage potential of said second battery cell.

14. The energy storage system of claim 13, wherein said substantially constant electrical current is supplied to said first battery cell prior to providing said electrical current to said second battery cell when said voltage potential of said first battery cell is greater than said voltage potential of said second battery cell.

15. The energy storage system of claim 13, wherein said first charging method comprises supplying a substantially constant electrical current, and said second charging method comprises supplying an electrical current at a substantially constant voltage potential.

16. The energy storage system of claim 13, wherein said first charging method comprises said controller controlling a supply of an electrical current to said first and second battery cells, such that a substantially constant electrical current is supplied to said first battery cell for a period of time when said voltage potential of said first battery cell is below said first voltage potential threshold, and then controlling said substantially constant electrical current being supplied to said second battery cell when said voltage potential of said second battery cell is below said first voltage potential threshold.

17. The energy storage system of claim 13, wherein said second charging method comprises said controller controlling a supply of an electrical current to said first and second battery cells, such that said electrical current at a substantially constant voltage potential is supplied to said first battery cell when substantially all of said plurality of battery cells have a voltage potential of at least one of equal to or greater than said first voltage potential threshold.

18. An energy storage system comprising:

a plurality of battery cells configured to be electrically connected to a power source, said plurality of battery cells comprising;

a first battery cell; and

a second battery cell; and

a controller in communication with said first and second battery cells, said controller controls an electrical current supplied to said first and second battery cells, such that a substantially constant electrical current is supplied to said first and second battery cells for a period of time when a voltage potential of said first and second battery cells is less than a first voltage potential threshold, respectively, and controlling an electrical current at a substantially constant voltage potential that is supplied to said first and second battery cells when said voltage potential of said first and second battery cells is equal to or greater than said first voltage potential threshold, said substantially constant electrical current is supplied to said first battery cell prior to providing an electrical current to said second battery cell, wherein said voltage potential of said first battery cell is below said first voltage potential threshold, and said voltage potential of said first battery cell is greater than said voltage potential of said second battery cell.

19. The energy storage system of claim 18, wherein said electrical current supplied to at least a portion of said plurality of battery cells has a voltage potential of approximately eight volts (8V) to twelve volts (12V).

20. The energy storage system of claim 18, wherein said controller controls said electrical current supplied to said plurality of battery cells based upon a monitored temperature of at least one of said plurality of battery cells.