Abstract: A lighting device includes at least one first light-emitting element configured to emit a first light of a first wavelength range; and a light guide having axially opposite first and second base surfaces, and a plurality of segments, each with a first light in-coupling surface formed on a lateral surface of the light guide, each of the segments configured to convert at least a part of input light into second light having a selected wavelength range. At least a portion of the first base surface includes a second light in-coupling surface and at least a portion of the second base surface includes a light out-coupling surface. The lighting device is optically coupled to the second light in-coupling surface such that the first light is coupled into the light guide, and the first light emitting element is configured to reflect at least part of the second light thereon having a wavelength within at least one of the selected wavelength ranges back into the light guide.

Abstract: An OLED lighting module comprising a support (2); an OLED lighting panel (3) with an emissive side with emissive and non-emissive areas (38) and an opposite side which comprises an OLED substrate (31), an OLED light-generating unit and a circuit board (34); an opaque liner with a first section (41) that covers at least part of the non-emitting areas (38) over the OLED substrate and a second section (42) that extend past the edges of the OLED substrate on the emissive side of the OLED panel; and an opaque bezel (6) in contact with the support (20), the opaque bezel (6) covering at least part of the second section (42) of the opaque liner but not the first section (41) of the opaque liner. By covering only that portion of an opaque liner that extends past the edges of the OLED substrate with a bezel and not the OLED substrate itself, the module can be made thin.

Abstract: A lighting device (20, 40) is disclosed. The lighting device (20, 40) comprises a segmented light guide (19), comprising a plurality of segments (21, 22), where each segment (21, 22) may be ‘pumped’ with light via respective first light in-coupling surfaces located on a lateral surface of the light guide (19), and where each of the segments (21, 22) is configured to convert at least a part of light input therein into light having a selected wavelength range. The light guide (19) extends in an axial direction between a first base surface (25) at one end (23) of the light guide (19) and a second base surface (26) at another end (24) of the light guide (19), the first base surface (25) and the second base surface (26) being located on different ones of the segments (21, 22).

Abstract: The invention provides a light emitting diode (LED) lighting system (1) comprising a string (ST) including a number of light emitting diode (LED) elements (10) functionally connected with an AC voltage source (20) configured to apply an input voltage (Vi) to said string (ST), wherein the string (ST) comprises a plurality of segments (S1, S2, S3, . . . ), with each segment (S1, S2, S3, . . .

Abstract: The invention provides a lighting device (1) comprising a beam shaping assembly (3240) comprising two light transmissive beam shaping elements (3250), each beam shaping element (3250) having a first end window (3251) and a second end window (3252), larger than the first end window (3251), with the beam shaping element (3250) tapering from the second end window (3252) to the first end window (3251), wherein the two light transmissive beam shaping elements (3250) are configured with the second end windows (3252) facing each other, and wherein an optical filter element (1021,2021) is configured between the two light transmissive beam shaping elements (3250), and wherein the optical filter element (1021,2021) comprises a dichroic filter, wherein the beam shaping assembly may be configured between two light transmissive elements or between a light source and a light transmissive element.

Abstract: The invention provides a light emitting diode (LED) lighting system (1) comprising a string (ST) including a number of light emitting diode (LED) elements (10) functionally connected with an AC voltage source (20) configured to apply an input voltage (Vi) to said string (ST), wherein the string (ST) comprises a plurality of segments (S1, S2, S3, . . . ), with each segment (S1, S2, S3, . . .

Abstract: Lighting device includes a first concentrator with a first luminescent material, a second concentrator with a second luminescent material having an absorption band overlapping with the emission band of the first luminescent material, and a plurality of light sources arranged to project light into a first input surface of the first concentrator to be converted at least partially into a first converted light by the first luminescent material and outputted from a first output surface of the first luminescent concentrator. The second concentrator arranged parallel to the first concentrator such that light from the light sources that leaks from a side surface of the first concentrator is received by the second concentrator and converted by the second luminescent material and outputted from a second exit surface of the second concentrator. The first and second concentrators having different lengths.

Abstract: The invention provides a three-channel lighting apparatus with the option to support the human circadian rhythm. By choosing especially the blue LED and green phosphor, the range of biological activity that can be changed is optimized. By adjustment of the LED spectra a bigger range in melanopsin effectiveness factor, at the same CCT range (from daylight like CCT down to dimmed halogen), can be obtained.

Abstract: The invention provides a lighting system (100), configured to provide lighting system light (101), the lighting system comprising: —a light source (10) configured to provide light source light (11) with light intensity in the blue spectral region; —a first luminescent material (210) configured to convert at least part of the light source light (11) into first luminescent material light (211) with light intensity in the green spectral region and having a full width half maximum (FWHM) of at least 90 nm; —a second luminescent material (220) configured to convert (i) at least part of the light source light (11), or (ii) at least part of the light source light (11) and at least part of the first luminescent material light (211) into second luminescent material light (221) with light intensity in the spectral region of 610-680 nm; wherein the lighting system (100) is configured to provide at a first setting of the lighting system (100) lighting system light (101) comprising said light source light (11), said first

Abstract: The invention provides a lighting device (100) comprising a) a light source (10) configured to provide blue light source light (11), b) a first luminescent material (210) configured to convert at least part of the light source light (11) into first luminescent material light (211) with light intensity in one or more of the green spectral region and yellow spectral region, c) a second luminescent material (220) configured to convert (i) at least part of the light source light (11), or (ii) at least part of the light light (11) and at least part of the first luminescent material light (221) with light intensity in the red spectral region, and d) a light exit face (110), wherein the lighting device (100) is configured to provide lighting device light (101) downstream from said light exit face (110), wherein the lighting device light (101) comprises one or more of said light source light (11), said first luminescent material light (211), and said second luminescent material light (221), and wherein the second lum

Abstract: The invention provides a lighting device comprising a first luminescent concentrator further using a second luminescent material of another composition alongside the first luminescent concentrator (especially no optical contact and/or optically separated using a dichroic mirror). Especially, this second material has an absorption band overlapping with the emission band of the first material. As a consequence a significant part of the light generated by the first luminescent material will be absorbed by the second material resulting in a high brightness white source with increased efficiency.

Abstract: The invention provides a lighting system (100), configured to provide lighting system light (101), the lighting system comprising: —a light source (10) configured to provide light source light (11) with light intensity in the blue spectral region; —a first luminescent material (210) configured to convert at least part of the light source light (11) into first luminescent material light (211) with light intensity in the green spectral region and having a full width half maximum (FWHM) of at least 90 nm; —a second luminescent material (220) configured to convert (i) at least part of the light source light (11), or (ii) at least part of the light source light (11) and at least part of the first luminescent material light (211) into second luminescent material light (221) with light intensity in the spectral region of 610-680 nm; wherein the lighting system (100) is configured to provide at a first setting of the lighting system (100) lighting system light (101) comprising said light source light (11), said first

Abstract: A lighting device comprising a light source being configured to generate source light of a white light emission spectrum having a color correlated temperature (CCT) in a range of 2500-20000K and comprising a control unit being configured to control a lighting element for tuning of the source light with respect to a ratio between a first emission peak in a wavelength range of 460-490 nm and a second emission peak in a wavelength range of 430-460 nm. Thus a lighting device with a tunable/adjustable spectrum is provided that can switch between a first operation state of energy efficiency lighting with a blue peak in the second wavelength range of 430-460 nm, but with blue hazard risk, and a second operation state of less efficient but safe, healthy lighting with a biological stimulant having a blue peak in the first wavelength range of 460-490 nm.

Abstract: The invention provides a three-channel lighting apparatus with the option to support the human circadian rhythm. By choosing especially the blue LED and green phosphor, the range of biological activity that can be changed is optimized. By adjustment of the LED spectra a bigger range in melanopsin effectiveness factor, at the same CCT range (from daylight like CCT down to dimmed halogen), can be obtained.

Abstract: A solid state light emitter package (200), a light emitting device, a flexible LED strip and a luminaire are provided. The solid state light emitter package comprising: i) at least three solid state light emitter dies (132, 142, 152) which emit violet/blue light, red light and further light, respectively, ii) a luminescent converter (120) with luminescent material, iii) an optical element (102, 105) for mixing at least portion of the light of the different colors of light and iv) a light exit window (114). The luminescent material at least partially converts the further light towards greenish light having a peak wavelength in the green or cyan spectral range and has a color emission distribution that is wide enough such that the solid state light emitter package is capable of emitting light with a high enough Color Rendering Index. The Color Rendering Index relates to light that has a color point close to the black body line.

Abstract: A fish lighting system has an input interface (10) which receives instructions corresponding to a desired fish behavioral and/or physiological response (12). This is converted into a lighting control signal (RGB, t) for driving a lighting arrangement (18), with the intensity and color of the output from the lighting arrangement selected to obtain the desired fish behavioral and/or physiological response.

Abstract: A solid state light emitter package (200), a light emitting device, a flexible LED strip and a luminaire are provided. The solid state light emitter package comprising: i) at least three solid state light emitter dies (132, 142, 152) which emit violet/blue light, red light and further light, respectively, ii) a luminescent converter (120) with luminescent material, iii) an optical element (102, 105) for mixing at least portion of the light of the different colors of light and iv) a light exit window (114). The luminescent material at least partially converts the further light towards greenish light having a peak wavelength in the green or cyan spectral range and has a color emission distribution that is wide enough such that the solid state light emitter package is capable of emitting light with a high enough Color Rendering Index. The Color Rendering Index relates to light that has a color point close to the black body line.

Abstract: There is provided a light emitting module (1) having at least one light emitting element (3) which is arranged to emit light of a primary wavelength, and a wavelength converting element (5) arranged at a distance from the at least one light emitting element (3). The wavelength converting element (5) is arranged to convert at least part of the light of a primary wavelength into light of a secondary wavelength. Further the module (1) comprises a first optical component (7) having surface structures (11) on a surface facing away from the light emitting element (3). Light rays incident on the first optical component (7) at small angles are reflected and light rays incident on the first optical component (7) at large angles are transmitted and bent towards a normal of the first optical component (7). The invention is advantageous in that it provides a compact and efficient light-directing module.

Abstract: There is provided a light emitting module (1) having at least one light emitting element (3) which is arranged to emit light of a primary wavelength, and a wavelength converting element (5) arranged at a distance from the at least one light emitting element (3). The wavelength converting element (5) is arranged to convert at least part of the light of a primary wavelength into light of a secondary wavelength. Further the module (1) comprises a first optical component (7) having surface structures (11) on a surface facing away from the light emitting element (3). Light rays incident on the first optical component (7) at small angles are reflected and light rays incident on the first optical component (7) at large angles are transmitted and bent towards a normal of the first optical component (7). The invention is advantageous in that it provides a compact and efficient light-directing module.

Abstract: The invention relates to a tubular lamp comprising a lamp vessel (10) which accommodates a light source (11a, 11b, 11c). A first part of the lamp vessel is provided with a coating (13) reflective of radiation emitted by said light source. A second part of the lamp vessel is provided with a light-absorbing coating (14). The light absorbing coating comprises pigments incorporated in a sol gel matrix.