Homogenization system for an LED luminaire

• US 9,885,461 B2
• Filed: 04/09/2015
• Issued: 02/06/2018
• Est. Priority Date: 04/09/2015
• Status: Active Grant

• Current Assignee: Robe Lighting S.R.O.
• Original Assignee: Robe Lighting S.R.O.
• Inventors: Jurik, Pavel, Valchar, Josef
• Primary Examiner(s): Bowman, Mary Ellen
• Application Number:
  US14/682,853
• Publication Number:
  US 20160298827A1
• Time in Patent Office: 1,034 Days
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21W 2131/40 Lighting for industrial, commercial, recreational or military use
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: F21Y 2105/12 characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
• CPC Class Codes: F21Y 2105/18 annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 27/141 using dichroic mirrors

Abstract

A remotely directable luminaire with an improved color LED homogenization system for LED luminaires employing a plurality of LED arrays where an array employs a plurality of discrete peak LED groups and dichroic mirrors maximized for transmission/reflection of around the groups of LED'"'"'s discrete peaks to generate a directional homogenized color light beam with additive color mixing.

Claims

1. A directed light beam luminaire comprising

a gimbal mechanism for changing the direction of the light beam about at least one axis;

a light source employing a plurality of LED arrays wherein at least one LED array has at a plurality of LED sets with different discrete wavelength peaks where the output of the plurality of at least one of the sets are controlled independently of the other set(s);

where the light emitted by the LED arrays are combined via a plurality of dichroic filters mirrors which are maximized to transmit or reflect the discrete wavelength peaks of the LED'"'"'s employed in the plurality of LED arrays in order to combine light output from the plurality of LED arrays whereby the output light color is achieved by additive color mixing.