Lighting system for art works

• US 9,134,004 B2
• Filed: 04/27/2012
• Issued: 09/15/2015
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: Cerno LLC
• Original Assignee: Cerno LLC
• Inventors: Wacholder, Daniel, Seymour, Herbert E.
• Primary Examiner(s): Roy, Sikha
• Application Number:
  US13/457,951
• Publication Number:
  US 20130286649A1
• Time in Patent Office: 1,236 Days
• Field of Search: 362/231, 362/235
• US Class Current: 1/1
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 5/00 Refractors for light sources characterised by cooling arrangements F21V29/504
• CPC Class Codes: F21W 2131/304 for pictures
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting system and process for lighting objects particularly art works such as paintings and sculptures, comprising a diffusing film that scatters the light such that the object is illuminated substantially uniformly. The preferred embodiment employs one row of such lighting sources for small objects, and two or more rows for larger objects. The inner row is directed towards the top portion of the object and the outer row is directed towards the bottom portion of the object. The rows need not be placed next to each other. For 3-dimensional objects, one row may be below the object and the other row above to eliminate shadows.

Claims

1. A lighting system for illuminating an object comprising:

a first and second row of light sources, each row having at least one light source that generates light, and each row positioned outside the line of sight of an object, with each light source in the first and second row of light sources being directed towards a viewing side of the object; and

a first set of optics positioned between the first row of light sources and the object; and

a second set of optics positioned between the second row of light sources and the viewing side of the object and having different optical properties than the first set of optics;

wherein the first set of optics scatters the light generated by the first row of light sources and directs it towards a first portion of the viewing side of the object, and the second set of optics scatters the light generated by the second row of light sources and directs it towards a second portion of the viewing side of the object that is farther away from the first and second rows of light sources than that of the first portion of the object, such that the first and second rows of light sources are capable of illuminating the viewing side of the object substantially uniformly.

2. The lighting system for illuminating an object of claim 1 in which the first and second rows of light sources are affixed to a fixture that is mounted to the object or a frame of the object, and in which each of the first and second rows of light sources comprise a plurality of light-emitting diodes.

3. The lighting system for illuminating an object of claim 2 in which the first set of optics includes a first set of diffusers, and the second set of optics includes a second set of diffusers having a smaller angle of diffusion than that of the first set of diffusers.

4. The lighting system for illuminating an object of claim 3 in which the first set of optics includes a first set of reflectors, and the second set of optics includes a second set of reflectors having different reflective optics than that of the first set of reflectors.

5. The lighting system for illuminating an object of claim 4 in which the first set of reflectors are parabolic reflectors, and the second set of reflectors are total internal reflective lenses.

6. The lighting system for illuminating an object of claim 2 in which the first set of optics includes a first set of reflectors, and the second set of optics includes a second set of reflectors having different reflective optics than that of the first set of reflectors.

7. The lighting system for illuminating an object of claim 6 in which the first set of reflectors are parabolic reflectors.

8. The lighting system for illuminating an object of claim 6 in which the second set of reflectors are total internal reflective lenses.

9. The lighting system for illuminating an object of claim 8 in which the first set of reflectors are parabolic reflectors.

10. The lighting system for illuminating an object of claim 2 in which the light sources in each of the first and second rows of light sources are positioned in a longitudinal row, and each of the first and second rows of light sources independently pivot along their longitudinal axes.

11. The lighting system for illuminating an object of claim 10 in which the illumination level of each of the first and second rows of light sources may be adjusted.

12. A process for illuminating an object comprising the steps of:

generating light by a first row of light sources having a plurality of light sources;

generating light by a second row of light sources having a plurality of light sources;

projecting the light from the first row of light sources through a first set of optics towards a first portion of the viewing side of the object; and

projecting the light from the second row of light sources through a second set of optics towards a second portion of the viewing side of the object that is farther away from the first and second rows of light sources than that of the first portion of the viewing side of the object;

wherein the first set of optics has different optical properties than that of the second set of optics;

wherein the first and second rows of light sources are positioned outside the line of sight of the viewing side of the object; and

wherein the light that passes through the first and second set of optics is scattered such that the first and second portions of the viewing side of the object are illuminated substantially uniformly.

13. The process for illuminating an object of claim 12 in which the first set of optics diffuses the light through a first diffusing film, and the second set of optics diffuses the lights through a second diffusing film that has a smaller angle of diffusion than that of the first set of diffusing film.

14. The process for illuminating an object of claim 13 in which the first set of optics reflects the light through a first set of reflectors, and the second set of optics reflects the light through a second set of reflectors that have different optical properties of reflection than that of the first set of reflectors.

15. The process for illuminating an object of claim 14 further comprising the steps of:

securing the first and second rows of light sources to the object or a frame of the object;

independently pivoting the first and second rows of light sources along their longitudinal axes to direct the light generated by the each of the first and second rows of light sources onto the first and second portions, respectively; and

independently adjusting the illumination intensity of each of the first and second rows of light sources.

16. The process for illuminating an object of claim 12 in which the first set of optics reflects the light through a first set of reflectors, and the second set of optics reflects the light through a second set of reflectors that have different optical properties of reflection than that of the first set of reflectors.

17. The process for illuminating an object of claim 16 in which the first set of reflectors are parabolic reflectors.

18. The process for illuminating an object of claim 16 in which the second set of reflectors are total internal reflective lenses.

19. The process for illuminating an object of claim 18 in which the first set of reflectors are parabolic reflectors.

20. The process for illuminating an object of claim 12 further comprising the step of securing the first and second rows of light sources to the object.