Koninklijke Philips Corporation N.v.

Lumileds Holding B.v.

Ties Van Bommel

Rifat Ata Mustafa Hikmet

Marcellinus Petrus Carolus Michael Krijn

Josef Andreas Schug

Oscar Hendrikus Willemsen

Thomas Caspar Kraan

Roman Hohn

Siebe Tjerk DeZwart

Leon Hendrikus Christiaan Kusters

A beam shaping device () comprising first () and second () optically transparent substrates, a liquid crystal layer () sandwiched there between, and first () and second () electrodes arranged on a side of the liquid crystal layer () facing the first substrate (). The beam shaping device () is controllable between beam-shaping states, each permitting passage of light through the beam-shaping device in a direction perpendicular thereto. The beam shaping device () is configured in such a way that application of a voltage (V) across the first () and second () electrodes results in an electric field having a portion essentially parallel to the liquid crystal layer () in a segment thereof between neighboring portions of the electrodes () and extending substantially from the first substrate () to the second () substrate. In this way a relatively high refractive index gradient can be obtained across short distances, which enables a very efficient beam shaping. The electric field can be achieved by utilizing electrodes provided on one side of the liquid crystal layer, in a so-called in-plane configuration. The device can be used in an autostereoscopic display device, for switching between 2D and 3D modes.

Beam shaping device

Proposed is a lighting system comprising: at least one laser adapted to output light; a pixelated luminous screen for emitting light when excited by incident light; and at least one optical component adapted to redirect and distribute light from the at least one laser to the pixelated luminous screen. The pixelated luminous screen comprises: a plurality of luminous pixels arranged adjacent each other with separated side edges, each pixel comprising luminous material; and a heat sink formed from thermally conductive material. The heat sink is positioned between the plurality of luminous pixels such that it contacts the adjacent side edges of the pixels.

Lighting system

A laser lighting system has a first laser light source, a second laser light source and a light conversion element. The outputs from the first and second laser light sources are directed to the light conversion element, which generates wavelength-converted light output in response to excitation by laser light. The first and second laser light sources generate laser light of different wavelength having different absorption characteristics within the light conversion element, such that the range of depths within the light conversion element from which wavelength-converted light is generated is different. This difference in converted output can be used to create different optical effects so that beam steering or beam shaping can be performed.

Laser based lighting system and method

Growing community of inventors

Aachen, Germany

Ties Van Bommel