摘要:
The present invention relates to a lamp unit (501) for an adaptive front lighting system (AFS) (500) for a vehicle (100). The lamp unit (501) comprises a liquid crystal element (200/200′) arranged to receive light emitted by a light source (502), which liquid crystal element (200/200′) has a first state in which it is adapted to transmit incoming light without substantially refracting said incoming light, and a second state in which it is adapted to refract said incoming light when the light passes through said liquid crystal element. This allows light to be altered without any mechanical movements in or of the lamp unit (501). The present invention also relates to an AFS (500) comprising such a lamp unit (501), and a vehicle (100) comprising such an AFS (500).
摘要:
The invention provides a light module (1) with a light source (2) for emitting a beam of light (5), an adjustable optical element (300) for adjusting the beam of light (5) from the light source (2) into an adjusted beam of light (25) with a scattering pattern that is electrically variable; and a controller (304) for controlling, in response to an adjusting control signal (371), at least one element of a group of elements comprising the adjustable optical element (300) and the light source (2) by means of at least one driving signal (375, 376). A multi-purpose light, for example for interior car lighting, is advantageously provided thereby.
摘要:
The invention provides a light module (1) arranged to produce a beam of light (25) with a scattering pattern that is electrically variable. The module comprises a light source (2) arranged to provide a beam of light (5); and an electrically adjustable optical element (300) arranged to adjust the beam of light (5) from light source (2). The adjustable optical element comprises a first cell (10) with a first liquid crystal gel (11); optionally a polarization rotator (30); a second cell (20) with a second liquid crystal gel (21); and a unit 40 for applying a voltage across at least one of the first and second cells (10,20). Especially, the light module (1) provides a beam of light (25) with an anisotropic light distribution.
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 (201) for controlling shape and direction of light, comprises a first transparent planar substrate (203) and a second transparent planar substrate (205), the substrates being configured for arrangement essentially perpendicular to incident light beams (211), a liquid crystal layer (209) arranged between the first and second substrate, a first transparent electrode pattern (207) arranged on the first substrate and a second transparent electrode pattern (217) arranged on the second substrate, and control means configured to adjust an electric potential difference between the first and second electrode patterns, thereby configured to adjust a refractive index of the liquid crystal layer.
摘要:
A method for controlling an angular distribution of a light-beam emitted by a light-output device (102, 200) comprising a first set of light-sources (105, 211) comprising at least one light-source configured to emit light within a first angular range (221, 231, 241) and second set of light-sources (107, 210) comprising at least one light-source configured to emit light within a second angular range (222, 232, 242), wherein the first angular range is different from the second angular range. The method comprises the steps of: receiving (401) a dimmer setting (VDS) from a dimmer (101); controlling (404), if the dimmer setting is within a first predetermined range, the first set of light-sources to emit light within the first angular range; and controlling (405), if the dimmer setting is within a second predetermined range, the second set of light-sources to emit light within the second angular range. Through the method according to the invention the angular distribution of light emitted from a single light-output device may be controlled using a single switch, thereby avoiding the need for having a plurality of switches and/or new wiring which would otherwise be required.
摘要:
A lighting device (1) for providing a homogeneous luminous intensity distribution in relation to an optical axis of the lighting device (1), the lighting device (1) comprising: at least one light source (7); a housing (3) arranged to enclose the at least one light source (7), the housing (3) comprising an at least partly transparent housing portion being arranged in parallel to the optical axis of the lighting device (1); and a reflector (4) arranged inside the housing (3), the housing (3) and the reflector (4) together defining a single light mixing chamber (6), wherein the reflector (4) is arranged to reflect light from the at least one light source (7) away from the optical axis of the lighting device (1) towards the at least partly transparent housing portion.
摘要:
A small and bright light-emitting device, comprising an outer boundary lens surface and at least one LED, is achieved by carefully choosing the inclination of each surface portion of the outer lens surface with respect to the chip size of the light source. The inclination of the surface portions are chosen such that the lens provides an optimal weighing between size and light efficiency.
摘要:
An illumination system has a mounting substrate (4) for mounting and electrically contacting a plurality of light-emitting diodes (R, A, G, B). A first category of the light-emitting diodes (G, B) comprises a first translucent substrate (11) provided with an active layer (1) on an outer surface (13) of the first translucent substrate facing the mounting substrate (4); electrical contacts are provided at a side facing the mounting substrate. A second category of the light-emitting diodes (R, A) comprises an active layer (2) arranged on a second translucent substrate (12); at least one electrical contact is provided at a side facing away from the mounting substrate. Each light-emitting diode of the first category is provided on a first sub mount (21). Each light-emitting diode of the second category is provided on a second sub mount (22). The first and second sub mount are provided on the mounting substrate.
摘要:
An illumination system has a plurality of light emitters (R, G, B) and a light-collimator (1) for collimating light emitted by the light emitters. The light-collimator is arranged around a longitudinal axis (25) of the illumination system. A light-exit window (5) of the light-collimator at a side facing away from the light-emitters is provided with a translucent cover plate (11) provided with a switchable optical element (15) based on electro wetting. The light-exit window of the light-collimator or the translucent cover plate is provided with a light-dispersing structure (7) for broadening an angular distribution of the light emitted by the illumination system. The optical element (15) being switchable in a mode of operation reducing the effect of the light-dispersing structure (7). Preferably, the effect of the light-dispersing structure is substantially counteracted when the switchable optical element operates in the mode of operation reducing the effect of the light-dispersing structure.