WO2012114228A2 - Appareil d'éclairage incluant des diodes électroluminescentes et un ensemble réflecteur - Google Patents

Appareil d'éclairage incluant des diodes électroluminescentes et un ensemble réflecteur Download PDF

Info

Publication number
WO2012114228A2
WO2012114228A2 PCT/IB2012/050684 IB2012050684W WO2012114228A2 WO 2012114228 A2 WO2012114228 A2 WO 2012114228A2 IB 2012050684 W IB2012050684 W IB 2012050684W WO 2012114228 A2 WO2012114228 A2 WO 2012114228A2
Authority
WO
WIPO (PCT)
Prior art keywords
lighting apparatus
light source
light beam
reflector assembly
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2012/050684
Other languages
English (en)
Other versions
WO2012114228A3 (fr
Inventor
Andrew Tanton Nichols
Bruce Donald MC CALLUM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2012114228A2 publication Critical patent/WO2012114228A2/fr
Publication of WO2012114228A3 publication Critical patent/WO2012114228A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/08—Optical design with elliptical curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • CYC CYC
  • Traditional backdrop (CYC) and wall wash lighting products use an elliptical reflector with a linear tungsten halogen or metal halide lamp source to produce an asymmetric light distribution to produce a smooth and even beam up/down and across a given surface.
  • LED light emitting diodes
  • the current LED-based solutions also provide multiple shadows and a lack of beam/light homogeneity.
  • the essential feature of this invention is the use of an LED light source(s) with a multi-surface reflector having one or more elliptical surfaces to direct the light beam from the LED light source(s) into an asymmetric distribution that is smooth and even, lighting up/down and across a given surface.
  • the lighting apparatus can be used by itself or enhanced through use of multiple lighting apparatus to provide an illusion of infinity (even and smoothly blended lit surface).
  • This optical distribution system can be utilized in all lighting applications where a smooth and even beam is required on a surface, where the luminaire is located above and/or below or to the side of the surface being lit.
  • Fig. 1 is a front perspective view of the lighting apparatus of the subject
  • Fig. 2 is a front view of the lighting apparatus of Fig. 1;
  • Fig. 3 is a cross-sectional view of the lighting apparatus taken along the line A- A in Fig. 2.
  • An LED light source which may be formed by an array of LEDs, is placed adjacent to the base (light entrance) of a reflector assembly.
  • the reflector assembly contains one or more elliptically-shaped surfaces to control the light beam eminating from the LED light source and to direct the light beam into an asymmetric distribution pattern.
  • the elliptically-shaped surfaces include a primary elliptical reflector surface, side elliptical reflector surfaces, and an end (or top) elliptical reflector surface.
  • Each of the reflector surfaces may be formed by a single smooth element. However, in the preferred embodiment, each of the reflector surfaces is formed by a plurality of rectangular fiat elements, schematically shown in Figs. 1-3. Such an arrangement enables a better control of color mixing.
  • the lighting apparatus includes a diffuser and/or holographic disk positioned between the LED light source and the reflector assembly to further manipulate the light beam/distribution.
  • any of the disclosed elements may be comprised of hardware portions (e.g., including discrete and integrated electronic circuitry), software portions (e.g., computer programming), and any combination thereof;
  • hardware portions may be comprised of one or both of analog and digital portions; g) any of the disclosed devices or portions thereof may be combined together or separated into further portions unless specifically stated otherwise; and

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Une source lumineuse à diodes électroluminescentes est placée à une entrée de lumière d'un ensemble réflecteur qui est doté d'au moins une surface de réflecteur elliptique composée, afin de produire un faisceau lumineux asymétrique régulier permettant d'éclairer, par exemple, un mur.
PCT/IB2012/050684 2011-02-25 2012-02-15 Appareil d'éclairage incluant des diodes électroluminescentes et un ensemble réflecteur Ceased WO2012114228A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161446530P 2011-02-25 2011-02-25
US61/446,530 2011-02-25

Publications (2)

Publication Number Publication Date
WO2012114228A2 true WO2012114228A2 (fr) 2012-08-30
WO2012114228A3 WO2012114228A3 (fr) 2012-11-08

Family

ID=45895430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/050684 Ceased WO2012114228A2 (fr) 2011-02-25 2012-02-15 Appareil d'éclairage incluant des diodes électroluminescentes et un ensemble réflecteur

Country Status (1)

Country Link
WO (1) WO2012114228A2 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2643105C (fr) * 2006-03-13 2014-04-29 Tir Technology Lp Dispositif optique destine a melanger et a rediriger de la lumiere
DE102006030646B4 (de) * 2006-04-21 2012-04-26 Siteco Beleuchtungstechnik Gmbh Innenraumleuchte zur Ausleuchtung einer Wand oder Decke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
WO2012114228A3 (fr) 2012-11-08

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