Abstract: The present invention describes a collimating apparatus 10. The collimating apparatus 10 comprises a light source 12, a waveguide 14 adjacent to the light source 12 and configured to receive light from the light source 12, a light steering optic 16 configured to receive light 30 from the waveguide 14, and a collimating optic 18 configured to collimate light received from the light steering optic 16. The wave guide 14 and the collimating optic 18 are both physically located on a first side of the light steering optic 16. The light steering optic 16 is configured to steer the light 30 received from the waveguide 14 towards the collimating optic 18.

Abstract: The present invention describes a collimating system comprising a plurality of collimating apparatuses forming an array. Each collimating apparatus comprises a light source 12, and a collimating optic 18a configured to collimate light received from the light source 12. The collimating system further comprises a homogenising optical arrangement 50 spaced apart from the array and configured to extend substantially perpendicular to collimated light exiting each collimating apparatus. The homogenising optical arrangement 50 is configured to receive light from each collimating apparatus, the received light having a non-uniform relative radiance profile. The homogenising optical arrangement 50 is configured such that light received from adjacent collimating apparatuses superimposes on exiting the homogenising optical arrangement 50, and forms a flattened relative radiance profile 48b.

Abstract: An artificial skylight generally includes at least one light source, at least one first collimator, a prism sheet, and at least one transmissive material. The at least one first collimator is configured to collimate light from the at least one light source. The prism sheet is disposed adjacent to the at least one first collimator and is configured to reflect and refract collimated light received from the at least one first collimator. The at least one transmissive material is disposed adjacent to the prism sheet and is configured to radiate light diffusely.

Abstract: A display includes a first reflecting surface, a second reflecting surface, and a beam splitter. The second reflecting surface is positioned parallel with respect to the first reflecting surface, and the beam splitter is disposed between the first and second reflecting surfaces. The beam splitter includes a first transmissive substrate having opposed first and second sides and a length extending from a first end to a second end. A first layer of material is disposed on at least one of the first or second sides of the first transmissive substrate. The first layer of reflective material extends from the first end of the first transmissive substrate to a location along the length of the first transmissive substrate.

Abstract: An artificial skylight generally includes at least one light source, at least one first collimator, a prism sheet, and at least one transmissive material. The at least one first collimator is configured to collimate light from the at least one light source. The prism sheet is disposed adjacent to the at least one first collimator and is configured to reflect and refract collimated light received from the at least one first collimator. The at least one transmissive material is disposed adjacent to the prism sheet and is configured to radiate light diffusely.