Luminaire combining ambient light and task light

• US 9,353,921 B2
• Filed: 03/18/2010
• Issued: 05/31/2016
• Est. Priority Date: 03/25/2009
• Status: Expired due to Fees

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Bembridge, Mathew Lee, Watson, George Francis, Pena, Oscar Enrique, Marzano, Stefano Luigi
• Primary Examiner(s): Philogene, Haissa
• Assistant Examiner(s): YANG, AMY X
• Application Number:
  US13/259,181
• Publication Number:
  US 20120091903A1
• Time in Patent Office: 2,266 Days
• Field of Search: 315/291, 315/209.R, 315/178, 315/297
• US Class Current: 1/1
• CPC Class Codes: F21S 6/005 with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
• CPC Class Codes: F21S 8/036 by means of a rigid support, e.g. bracket or arm
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 23/0492 the sensor detecting a change in orientation, a movement or an acceleration of the lighting device, e.g. a tilt switch
• CPC Class Codes: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2113/20 of different form
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A luminaire is disclosed that allows a transfer from ambient light to task light through physical manipulation by the user. The luminaire comprises OLED light sources for generating an ambient light effect and LED light sources for generating a task light effect.

Claims

1. A luminaire having a base for positioning thereof in an environment and comprising:

a lighting fixture supported by and moveable relative to the base, the lighting fixture comprising a task light module for providing task light and an ambient light module for providing ambient or decorative light, wherein the task light module comprises at least one point light source and the ambient light module comprises at least one surface light source, wherein said at least one point light source has a substantially thinner surface area than said at least one surface light source;

a sensor for detecting at least one of a rotation, a translation or a position of the lighting fixture relative to the base; and

a processor for dynamically controlling a light output from the task light module and a light output from the ambient light module, based on an output from the sensor,

wherein the lighting fixture is in the form of a blade,

wherein the at least one surface light source of the ambient light module is integrated in a major surface of the blade, and

wherein the at least one point light source of the task light module is integrated in a second surface of the lighting fixture that is an edge surface of the blade or is opposite of said major surface.

2. The luminaire according to claim 1, wherein the at least one point light source is an LED and the at least one surface light source is an OLED.

3. The luminaire according claim 1, wherein the task light module comprises an array of LED light sources and the ambient light module comprises an array of OLED light sources, and wherein each LED light source is individually controllable.

4. The luminaire according to claim 3, wherein each OLED light source is individually controllable.

5. The luminaire according to claim 1, wherein the lighting fixture has at least one predefined home position relative to the base for automatically switching off the luminaire.

6. The luminaire according to claim 5, wherein the luminaire is automatically switched off when in the home position and automatically switched on when out of the home position.

7. The luminaire according to claim 1, wherein the luminaire is configured such that when the lighting fixture is in a first position, the luminaire predominantly produces the ambient or decorative light, and when the lighting fixture is in a second position that is different from said first position, the luminaire predominantly produces the task light.

8. A method for illuminating an environment, comprising:

providing a luminaire having a base for positioning the luminaire in the environment and a lighting fixture for supporting a task light module for providing task light and an ambient light module for providing ambient or decorative light, wherein the task light module comprises at least one point light source and the ambient light module comprises at least one surface light source, and wherein said at least one point light source has a substantially thinner surface area than said at least one surface light source;

detecting at least one of a rotation, a translation or a position of the lighting fixture relative to the base, and;

controlling a light output from the task light module and a light output from the ambient light module based on the detected rotation, movement or position of the lighting fixture relative to the base,

wherein the lighting fixture is in the form of a blade,

wherein the at least one surface light source of the ambient light module is integrated in a major surface of the blade, and

wherein the at least one point light source of the task light module is integrated in a second surface of the lighting fixture that is an edge surface of the blade or is opposite of said major surface.

9. A method according to claim 8, further comprising controlling a ratio of task light output versus ambient light output, bases on the detected rotation, movement or position of the lighting fixture relative to the base.

10. A method according to claim 8, further comprising:

comparing the detected rotation, movement or position of the lighting fixture relative to the base with a predefined position of the lighting fixture corresponding to a luminaire home position, and;

switching the luminaire off when the lighting fixture is moved into the predefined position and switching the luminaire on when the lighting fixture is moved out of the predefined position.

11. The method of claim 8, wherein the controlling comprises predominantly producing the ambient or decorative light when the lighting fixture is in a first position, and predominantly producing the task light when the lighting fixture is in a second position that is different from said first position.

12. A luminaire having a base for positioning thereof in an environment and comprising:

a lighting fixture supported by and moveable relative to the base, the lighting fixture comprising a task light module for providing task light and an ambient light module for providing ambient or decorative light, wherein the task light module comprises at least one point light source and the ambient light module comprises at least one surface light source;

a sensor for detecting at least one of a rotation, a translation or a position of the lighting fixture relative to the base; and

a processor for dynamically controlling a light output from the task light module and a light output from the ambient light module, based on an output from the sensor,

wherein the lighting fixture is in the form of a blade, wherein the surface light source of the ambient light module is integrated in a surface of the lighting fixture, and wherein the point light source of the task light module is integrated in the opposite surface of the lighting fixture, such that when the lighting fixture is in a vertical position, the luminaire produces only the ambient or decorative light, and when the lighting fixture is in a horizontal position, the luminaire produces only the task light.