Scene setting control for two light groups

• US 8,508,139 B2
• Filed: 12/16/2008
• Issued: 08/13/2013
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Baaijens, Johannes Petrus Wilhelmus
• Primary Examiner(s): Chang, Daniel D
• Application Number:
  US12/747,525
• Publication Number:
  US 20100277106A1
• Time in Patent Office: 1,701 Days
• Field of Search: 315/169.3, 315/312, 315/313, 315316-320, 315/291, 315/292, 315/294, 315/295
• US Class Current: 315/169.3
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: H05B 47/165 following a pre-assigned programmed sequence; Logic control [LC]

Abstract

A lighting system (200) includes light sources (220) configured to provide light; and a controller (210) configured to divide the light sources (220) into a focus group (310) including focus light sources for providing main light and a surrounding group (320) including surrounding light sources for providing background light. The focus light sources have individual focus intensity levels related to each other according to a first relationship, and the surrounding light sources have individual surrounding intensity levels related to each other according to a second relationship. The controller (210) may be further configured to change a ratio between the focus and surrounding groups without changing the first and second relationships, such as by interpolation or multiplying by a factor at least one of the individual focus intensity levels and the individual surrounding intensity levels. The controller (210) may also be configured to change the total intensity without changing the ratio, and the first and second relationships.

Claims

1. A lighting system comprising:

a plurality of light sources configured to provide light and grouped into different groups, each of said different groups having a plurality of light sources;

a controller configured to divide the light sources into

a focus group including focus light sources for providing main light, and

a surrounding group including surrounding light sources for providing background light;

an activity ratio input read by the controller;

wherein the focus light sources in said focus group have individual focus intensity levels related to each other according to a first relationship,

the surrounding light sources in said surrounding group have individual surrounding intensity levels related to each other according to a second relationship;

wherein said controller is configured to change a ratio of the focus group to the surrounding group according to the activity ratio input without changing the first relationship and the second relationship.

2. The lighting system of claim 1, wherein the controller is further configured to change the ratio between a first end point having a first coordinate and a second end point having a second coordinate.

3. The lighting stem of claim 2,

wherein the first coordinate is about 100% focus and 100% surrounding, and the second coordinate is about 0% focus and 0% surrounding;

wherein the 100% focus includes at least one of all focus light sources in the focus group set at a maximum setting, and one focus light source in the focus group set at the maximum setting; and

wherein the 100% surrounding includes at least one of all surrounding light sources in the surrounding group set at the maximum setting, and one surrounding light source in the surrounding group set at the maximum setting.

4. The lighting system of claim 2, wherein the first coordinate includes a scene coordinate (F1, S1) and is a pre-set coordinate stored in and selectable from a memory, and the second coordinate is a scene coordinate (F1, 0% surrounding intensity).

5. The lighting system of claim 1, wherein the controller is configured to change the ratio by multiplying the individual focus intensity levels by a factor (R) and simultaneously multiplying the individual surrounding intensity levels by an inverse of the factor (1/R).

6. The lighting system of claim 1, wherein the controller is configured to change the ratio by at least one of interpolation and multiplying by a factor at least one of the individual focus intensity levels and the individual surrounding intensity levels.

7. The lighting system of claim 1, wherein the controller is configured to change total intensity without changing the ratio, the first relationship, and the second first relationship.

8. The lighting system of claim 1, wherein the controller is configured to change total intensity without changing the ratio, the first relationship, and the second first relationship by multiplying by a factor both the individual focus intensity levels and the individual surrounding intensity levels.

9. The lighting system of claim 1, wherein

the ratio is selectable between a first end point being 100% focus and 0% surrounding, and

a second end point being 0% focus and 100% surrounding;

wherein at the first end point, at least one focus light source in the focus group is set at a maximum intensity level, and

at least one surrounding light source in the surrounding group is set at a minimum intensity level; and

wherein at the second end point least one focus light source in the focus group is set at a minimum intensity level, and

at least one surrounding light source in the surrounding group is set at a maximum intensity level.

10. The lighting system of claim 1, wherein the controller is further configured to change an intensity level of light source from a first value to a second value level in equal or exponentially growing increments.

11. A method of controlling light sources configured to provide light, the method comprising the acts of:

dividing the light sources into a focus group including a plurality of focus light sources for providing main light and a surrounding group including a plurality of surrounding light sources for providing background light,

wherein the focus light sources have individual focus intensity levels related to each other according to a first relationship, and

the surrounding light sources have individual surrounding intensity levels related to each other according to a second relationship; and

changing a ratio of the focus group to the surrounding group without changing the first relationship and the second relationship.

12. The method of claim 11, further comprising the act of changing the ratio between a first end point having a first coordinate and a second end point having a second coordinate.