The subtractive technique to create colour is to filter out wavelengths from the white light source to leave only the wavelength(s) required.  A wavelength which isn’t initially present cannot be created, the colours available are only those present in the source and so having a wide range of wavelengths (a high CRI) present in the source white light is a preferable starting point.

The same issue applies when using LED sources and additive mixing.  A colour cannot be created outside of the boundaries of the area of a CIE chart defined by the sources present.  The solution is to use a wider range of source wavelengths than the current RGB technique to create a wider colour gamut.  A wider range of source wavelengths present also means that a better white can be created with the same additive mixing technique.

Remotely controllable beam angle adjustment is difficult with arrays of multiple color LEDs. The solution as shown in granted Patents GB 2,362,207 & US 7,004,603 (plus associated Continuation and Continuation in Part) is to dispense with lenses and move to a mechanical method based on individual independent LED segments called 'Eyes'.

The individual Eyes can be arranged to all point in the same direction to create a narrow beam, or pivoted relative to a support member to create a wide angle where the beam edges of each individual Eye overlap, typically at their half peak.

The narrow to wide beam angle adjustment is created by two Formers with cam slots. The Eyes can pivot in any direction relative to the support member so 'tilt' and 'sweep' motions are also possible without moving the luminaire itself. Other movements of the Formers (in any beam width setting) can be created causing alternative outcomes such as circular sweeps or figure of eights etc, none of which are available on current Automated Lights.

The visuals and graphics shown on the visuals page are based on a 7 Eye Automated Light model.  The next logical circular sizes use 19 Eyes (see C-in-P Patent figs 35 - 39) and 37 Eyes.

LED Battens could also benefit from the same technique in that a beam sweep and/or fan out of the individual ‘pixels’ can be achieved with the same patented technology.  With this technique LED based units such as 8 lights and 9 lights can have remote beam angle adjustment incorporated.  For square and rectangular examples see C-in-P patent Figs 41 – 52.

There are two additional associated Patents; granted UK pat GB 2,379,100 ‘Control System for lighting devices’ is a method of simplifying the control by DMX of a multiplicity of channels, intrinsic to multiplicity of LED sources, though it is not exclusive to that application and GB 2,378,576 ‘Light emitting device’ discloses a method of collimating a multiplicity of sources, most efficient with Laser diodes.