At least two lighting modules are disposed on a printed circuit board (PCB). Each of the lighting modules includes a plurality of light emitting diode (LED) chips disposed in a non-rectangular array. Lenses are provided over the lighting modules. Each lens has a convex outer surface, and a chamber with a planar or concave inner surface facing a corresponding lighting module and disposed to cover the LED set within the chamber. A light projecting device includes a plurality of LED sets and a plurality of lenses. An orientation part couples each lighting module to the PCB at a non-zero angle.

A lens and an illumination method thereof relates to the field of illumination technologies. The lens is provided with a concave space for accommodating a light source, a first irradiation part is formed on a first side of an inner wall of the concave space, and second irradiation parts are formed on the bottom and a second side of the inner wall of the concave space; a main light beam emitted by the first irradiation part and a main light beam emitted by the second irradiation parts form an acute angle. By means of the present invention, an upper region and a lower region of a to-be-irradiated object can be illuminated through one light source at the same time, and the light source arrangement cost is reduced.

The present disclosure discloses a lighting arrangement with optical composite that provides, when in operation, more uniform angular light distribution emissions into an environment. Lighting arrangements employing the novel optical composite in conjunction with LED light sources provide direct and indirect illumination with more uniform angular light distribution emissions into application environments. An optically coupled opaque layer suppresses internal reflections of ambient light to improve visual appearance of the optical composite by reducing peak brightness and brightness non-uniformity. In specific embodiments, low visibility matte appearances are achieved that are aesthetically desirable in the “off” (unlit) state. The present disclosure provides a solution to problems of non-uniform angular distribution of light causing visual discomfort and spatial discontinuity in output. Energy savings are achieved with high optical efficiency utilizing compact, durable, robust, and aesthetically appealing optical composites and lighting arrangements capable of providing an assortment of configurable angular light distributions.

A luminaire (1) comprising identical curved LED Modules (13, 13′, 13″) in an inner and an outer arrangement of LED Modules. Said LED Module comprising a curved PCB (14) having a main surface and a number of LEDs (15) arranged thereon. The LED Module has width W and is curved with its main surface extending in a plane Q. The LED Module extends over a circle with a radius Rc, wherein 200 mm<=Rc<=450 mm, and extends over an angle a over said circle, wherein 36°<=a<=72°. The number of LEDs is in between 3 and 150. Each LED (15) has a respective doughnut like shaped lens to render the LED during operation to emit a rotational symmetric batwing beam with a maximum intensity Imax of the batwing beam at an angle 13 with 60°<=13<=80° with said optical axis, and a FWHM in the range of 15-30°.

The present invention relates to an optical device comprising a light source that in turn emits a light beam, and that enables a predetermined area to be illuminated with a very high degree of uniformity in a plane perpendicular to said optical device, such that the orientation of the light beam is changed, illuminating only said predetermined area, where, due to the low profile thereof, the optical device enables same to be integrated into a luminaire with a reduced height dimension, which is also object of the present invention.

The present invention relates to an optical device comprising a light source that in turn emits a light beam, and that enables a predetermined area to be illuminated with a very high degree of uniformity in a plane perpendicular to said optical device, such that the orientation of the light beam is changed, illuminating only said predetermined area, where, due to the low profile thereof, the optical device enables same to be integrated into a luminaire with a reduced height dimension, which is also object of the present invention.

Disclosed are lighting arrangements that provide, when in operation, more uniform angular light distribution emissions into an environment. The lighting arrangements use LED light sources, a light scattering optical element and partial reflectance from a light transmissive sheet or reflective layer to produce direct and indirect illumination with improved angular light distribution and uniformity onto targeted illumination surfaces such as ceilings, walls, and floors. The present disclosure provides a solution to problems of non-uniform angular distribution of light causing visual discomfort and spatial discontinuity in output. Energy savings are achieved with high optical efficiency utilizing compact, durable, robust, and aesthetically appealing optical composites and lighting arrangements capable of providing an assortment of configurable angular light distributions.

The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.

The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.

An asymmetrical linear lens directing light at a limited solid angle includes a first solid profile section being a right trapezoid having a short and longer base side and two side legs. A second solid profile section is a non-right trapezoid having a short and longer base side and two side legs. The longer base side of the first solid profile section and the shorter base side of the second solid profile section coincide. One of the two side legs of the first solid profile section and one of the two side legs of the second solid profile section lie on a straight line enclosing a first angle with the longer base side of the second solid profile section. The other side leg of the second solid profile section is angled outward in relation to the other side leg of the first solid profile section by a second angle.