摘要:
The invention relates to a method for manufacturing a diffusive reflector (450) for a reflective or transflective Liquid Crystal Display (400). The reflector comprises a surface (452) that is structured by means of a photo-embossing process. Herein, a layer (100) of a mixture is provided including a photo-diffusible monomer (102), which may be transported through the layer under the influence of selectively applied irradiation. A layer relief is thus formed, which is preferably developed further at an elevated temperature. The layer is fixed and stabilized by means of a cross-linking step, preferably including thermally induced and/or photo-induced polymerization. In a final step, the polymer relieved surface thus formed is provided with a reflective material (154).
摘要:
The present invention relates to a photovoltaic cell device with combined energy conversion and lighting option and a method a controlling such a device. It comprises a responsive element, a reflector or a light source for changing light absorption and thus appearance of photovoltaic cells (e.g. solar panel). It is also possible to combine the responsive element or the reflector with light source(s) providing extra illumination. When combined with a sensor and control unit, ambient intelligent solar panels and ambient intelligent lighting systems can be obtained. A combination of a luminescent solar concentrator (LSC) and light-emitting device is also possible, where an energy storage device is charged by a photovoltaic cell upon irradiation. The energy storage powers one or more light sources which are coupled to the sides of the luminescent plate. The light emitted by the light sources is coupled into the plate and (partly) converted by the luminescent plate. This results in a plate that homogeneously emits light.
摘要:
The present invention relates to a spectral detection device (100) for detecting spectral components of received light, wherein the spectral detection device (100) comprises a filtering structure (110) arranged to filter the received light and output light with a wavelength within a predetermined wavelength range; and a light sensor (120) arranged to detect the light output by the filtering structure (110), wherein the filtering structure (110) is variable to allow a variation of the predetermined wavelength range over time.The arrangement enables a compact spectral detection device that may be provided at a low cost.
摘要:
The invention provides a lighting device comprising (a) a transparent waveguide plate (200), with first surface (201), opposite second surface (202), and edge surface between the first surface and the second surface, (b) a light source (300) for providing light source light towards a light incoupling surface of the transparent waveguide plate, configured to provide at least part of the light source light in a direction perpendicular to one or more of the first surface and the second surface. The transparent waveguide plate further comprises a luminescent material, (400) configured to convert at least part of the light source light into luminescent material emission, and light outcoupling means (220) for coupling luminescent material emission and optionally light source light out of the transparent waveguide plate as lighting device light in a direction away from one or more of the first surface and the second surface.
摘要:
The invention relates to a lighting apparatus (1) for generating a light pattern. A light source (4) generates a light beam (5) for being directed onto a liquid crystal cell (2). The liquid crystal cell (2) comprises a periodic structure (3). If voltage is applied to the liquid crystal cell (2) by a voltage source (8), a period phase pattern is generated. The liquid crystal cell (2) and the light source (4) are adapted such that multiple separate light beams (6) are generated in different directions by diffraction at the generated periodic phase pattern, wherein the multiple separate light beams (6) form the light pattern (7). Since the light pattern is generated by diffraction at the periodic phase pattern, which is modifiable by applying voltage, different light patterns can be generated, in particular, for decorative purposes, in a technically relatively simple way.
摘要:
The invention relates to a light emitter adapted for emitting light with a predefined angular color point distribution, to a method of use for a light emitter in video flash applications, in automotive headlight applications and/or in automotive lamp applications, and to a method, adapted for generating light with a predefined angular color point distribution. The light emitter is adapted for emitting light with a predefined angular color point distribution through an output and comprises a phosphor (2) and a pump source (1), wherein the pump source (1) is adapted for emitting pump light to at least part of the phosphor (2), and the phosphor (2) is adapted for emitting phosphor light by light conversion of absorbed pump light, and wherein a matching element (4) is provided which is arranged at least partly between the phosphor (2) and the output of the light emitter, and which is adapted for adjusting the ratio of the light intensity of the emitted phosphor light emitted by the phosphor (2) towards the output of the light emitter to the light intensity of the transmitted pump light going through the phosphor (2) towards the output of the light emitter. In this way, a versatile light emitter with a predefined angular color point distribution in conjunction with any desired angular light intensity distribution is provided at low costs.
摘要:
The present invention relates to an organic light emitting device (OLED) (100;200;400;800;900;1000;1100;1200) comprising a first substrate layer (101;201;401;501;701;1004;1104;1205) and a second substrate layer (102;202; 402;502;704; 1005;1105;1206). The device (100;200;400;800;900;1000;1100;1200) further comprises at least a first OLED assembly (103;403;503;901;1001;1101;1202) and a second OLED assembly (104;404;504;902;1002;1102;1203) arranged between the first and the second substrate layers. Each of the first and second OLED assemblies comprises a first electrically conductive layer (105;505;703), a second electrically conductive layer (106;506;706) and an organic light emitting layer (107;507;507′;707) arranged between the first and the second electrically conductive layer. The organic light emitting device (100;200;400;800;900;1000;1100;1200) of the invention allows for an increased light intensity and is suitable for large area applications.
摘要:
The invention relates to an illumination system (50), a beam-control element and a light source (30). The illumination system comprises the light source for emitting a light beam and a beam-control element for controlling the shape and/or direction of the light beam. The beam-control element comprises a resilient layer (2a) and a further layer (4a) being arranged substantially parallel to each other, the resilient layer comprising a relief (21) on a surface of the resilient layer arranged substantially parallel to the further layer, or the further layer comprising the relief on a surface of the further layer facing the resilient layer. The illumination system further comprises moving means (52) for moving the resilient layer and the further layer with respect to each other for reducing the relief by applying a pressure between the resilient layer and the further layer. The relief controls the shape and/or direction of the light-beam. When the relief is reduced by applying pressure, the light beam is substantially unaltered by the beam-control element.
摘要:
The present invention relates to a device (200) for electrically controlling shaping of a light beam. The device comprises primary optics (202) that is arranged to shape the light beam originating from a light source (201). The device further comprises an electrically controllable optical element (203) arranged to change the direction of the light falling onto it, when the element is in a light-redirecting mode. The optical element can be an electrically controllable scattering element e.g. created by using a PDLC material or an LC gel. The degree of light redirection of the optical element is controlled by applying an electric field to the LC material. Finally, the device comprises secondary optics (204) arranged to shape the scattered, diffracted or refracted light beam from the optical element.
摘要:
A device (230, 1330, 1430) includes: a first electrode (232); an electro-statically movable second electrode (234, 1734, 1834); and an electrically insulating layer (233) disposed between the first and second electrodes. The electro-statically movable second electrode is configured to have a first geometric configuration in response to a first electrical potential between the first and second electrodes, and is further configured to have a second geometric configuration in response to a second electrical potential between the first and second electrodes. The device is configured to receive a time-varying voltage and in response thereto the electrostatically movable second electrode is configured to repeatedly transition between the first geometric configuration and the second geometric configuration to influence a flow of a fluid (235) for cooling at least one heat-generating element (310).