Abstract: Electro luminescent metal, e.g. Ir, complexes are disclosed. The metal complexes comprise at least one ligand L1 and at least one ligand L2, wherein ligand L1 is a 2-phenylpyridine ligand (I), comprising a phenyl ring (A) and a pyridine ring (B). The integers 2 to 9 denote positions in which substitutions can be made, and by the use of different substituents, e.g. 2,4-difluoro and 7-N(CH3)2, the emission wavelength of the complex may be tuned. The ligand L2 may e.g. be a compound of the following formula (II).

Abstract: The invention relates to an UV lamp (100) that may for example be used as a torch for crime inspection. The UV lamp (100) comprises a light source (50), e.g. an UV LED, and a reflector (30) which are designed such that a light spot comprising an inner region of a given minimal diameter D at an axial distance of about 8-D is produced which has an intensity variation of less than about 20%. The reflector (30) may preferably be a Compound Parabolic Concentrator (CPC) with a high aspect ratio. Moreover, the UV lamp (100) may comprise a luminescent indicator for making activity of the UV lamp visible to a user.

Abstract: A method for mapping a physico-chemical parameter using a chemical exchange saturation transfer contrast agent in Magnetic Resonance Imaging is used with agents having only one exchangeable entity pool, e.g. proton pool, by applying two different RF frequencies for pre-saturation of the contrast agent.

Abstract: A light-emitting device comprises a light source adapted to emit light of a first wavelength range; a reflective body comprising a reflective layer; a wavelength converting layer comprising a wavelength converting material adapted to absorb light of said first wavelength range and to emit light of a second wavelength range, said wavelength converting layer and said light source being arranged mutually spaced apart; and light-scattering elements adapted to scatter light of at least said first wavelength range; wherein at least part of said light-scattering elements are arranged in the path of light from said light source to said wavelength converting layer. The light-emitting device according to the invention provides improved uniformity in colour and also improved brightness uniformity.

Abstract: There is provided a light emitting device comprising a light source comprising at least one light emitting diode emitting visible radiation. The light emitting device further comprises a wavelength converting body comprising a first wavelength converting material, which is arranged to receive light emitted by said light source and which has an emission maximum in the range of from 600 to 700 nm. The first wavelength converting material comprises the elements Mg, Ge, O and Mn. A light emitting device according to the invention produces light having increased saturation of red colors. Moreover, long life and good color stability is achieved.

Abstract: The invention provides an illumination device (10) with a light emitting diode (20), a transmissive support (50) comprising a luminescent material (51), and a translucent exit window (60). The luminescent material (51) LED (20) distance dLL is larger than 0 mm, and the luminescent material (51) exit window (60) distance dLW is also larger than 0 mm. With the pro-posed illumination device (10) the lamp may especially look white when it is in the off-state and illuminated with white light. Other advantages are that an intrinsically efficient system may be provided and that a warm white option may be provided.

Abstract: The invention provides an illumination device (100) comprising a translucent exit window (200), one or more transmissive windows (300), arranged upstream from LED(s) and downstream from the translucent exit window (200), and one or more luminescent material layers (400), which may particularly be coated to the downstream and upstream faces of the transmissive windows (300).

Abstract: The invention relates to a color-tunable illumination system (10; 12; 14) and a luminaire. The color-tunable illumination system comprises a first light source comprising a first set of light emitting diodes (21, 24), and a second light source comprising a second set of light emitting diodes (31, 37, 34). Both the first and second light source emit light of substantially a first predefined color into a light mixing chamber (60). The light mixing chamber further comprises a first luminescent material (50) converting light of the first predefined color into light of a second predefined color. The first light source is positioned with respect to the first luminescent material for illuminating the first luminescent material with a first flux of light being part of the light emitted by the first light source into the light mixing chamber.

Abstract: The invention relates to an illumination system, a luminaire and a display-device (200) comprising the illumination system. The illumination system (100, 101) comprises a light emitting diode (D1, D2), a light exit window (105) and a luminescent layer (120) arranged between the light emitting diode and the light exit window. The light emitting diode emits light of a first primary color (72, 75). The luminescent layer is arranged between the light emitting diode and the light exit window for converting part of the light emitted by the light emitting diode into light of a second primary color. The luminescent layer comprises a garnet luminescent material comprising at least Lutetium, Cerium, Silicon and Nitrogen (73), or it comprises a combination of a garnet luminescent material comprising at least Lutetium and Cerium (70) and a garnet luminescent material comprising at least Cerium and at least one element of the group comprising Yttrium and Gadolinium (71, 74).

Abstract: Electro luminescent metal, e.g. Ir, complexes are disclosed. The metal complexes comprise at least one ligand L1 and at least one ligand L2, wherein ligand L1 is a 2-phenylpyridine ligand (I), comprising a phenyl ring (A) and a pyridine ring (B). The integers 2 to 9 denote positions in which substitutions can be made, and by the use of different substituents, e.g. 2,4-difluoro and 7-N(CH3)2, the emission wavelength of the complex may be tuned. The ligand L2 may e.g. be a compound of the following formula (II).

Abstract: Magnetic resonance monitoring of a target (30) uses the detected magnetic resonance to determine movement such as diffusion of contrast agent relative to the object, and uses the movement to discriminate (50, 60) a part of the contrast agent which is bound to the target, from the rest of the contrast agent. The need for clearing agents can be avoided or reduced, and hence imaging is instantaneous. A “stationary spin map” of the object can be formed by comparing the movements in the different directions, and determining if the differences between them are less than a given threshold. Determining isotropic movement in this way for a number of locations on the object allows the map to be generated.

Abstract: The present invention relates to a method for MRI imaging to obtain information about a local physiochemical parameter after administration to a patient of a contrast agent comprising at least one non-responsive contrast enhancing entity that does not occur naturally in a human body and at least one responsive contrast enhancing entity attached to or mixed with the non-responsive contrast enhancing entity. By using such non-responsive contrast enhancing entities, a value for the physicochemical parameter can be obtained by acquiring only three images through which the method according to the present invention will be easier to apply in clinical routine since it will be faster and less sensitive to motion or flow artefacts.

Abstract: Magnetic resonance monitoring of a target (30) uses the detected magnetic resonance to determine movement such as diffusion of contrast agent relative to the object, and uses the movement to discriminate (50, 60) a part of the contrast agent which is bound to the target, from the rest of the contrast agent. The need for clearing agents can be avoided or reduced, and hence imaging is instantaneous. A “stationary spin map” of the object can be formed by comparing the movements in the different directions, and determining if the differences between them are less than a given threshold. Determining isotropic movement in this way for a number of locations on the object allows the map to be generated.

Abstract: The present invention provides a method MRI imaging. By applying a time modulation to the contrast enhancement of an MRI contrast agent, the method according to the invention leads to images with improved signal-to-noise ratio in the contrast-enhanced areas, strongly suppressed unwanted signal in the unenhanced areas, and reduced artefacts, such as motion artefacts.

Abstract: A temperature indicator (101) is adapted to be provided on a surface (116) for providing a first type of light emission and a second type of light emission (L2). The temperature indicator (101) comprises a light-emitting diode (108) for providing said first type of light emission and a light-emitting electrochemical cell (109) for providing said second type of light emission (L2). The light-emitting electrochemical cell (109) has a first electrode (120), a second electrode (121) and a second light-emitting layer (113) being sandwiched between them and comprising a matrix and ions being movable in the matrix, the mobility of said ions in said matrix being temperature dependent. A power source (105) is adapted for driving the cell (109) with an AC voltage, the frequency of which is tuned in such a way that the cell (109) provides said second type of light emission (L2) when the surface temperature exceeds a certain level.

Abstract: The invention provides MRI contrast agents which provide a high sensitivity and which have an optimised body retention time. These agents enable the mapping of the local pH, temperature, oxygen concentration or other metabolites in a patient's body by the use of Chemical Exchange Saturation Transfer (CEST). Particularly pH and temperature mapping are useful for the detection of small cancer lesions and localised inflammation respectively.

Abstract: The invention relates to a method for mapping of a physico-chemical parameter such as pH, temperature, pO2 or metabolite concentration using a chemical exchange saturation transfer contrast agent in Magnetic Resonance Imaging. This method is a modification of the known ratiometric method and may be used with agents having only one exchangeable entity pool, e.g. proton pool, by applying two different RF frequencies for pre-saturation of the contrast agent.

Abstract: The invention relates to an alignment layer with improved adhesion to liquid crystal (LC) films, to a precursor material used for the preparation of such a layer, to a laminate comprising such a layer and at least one LC polymer film, and to the use of the alignment layer and the laminate for optical, electrooptical, decorative or security uses and devices, wherein the alignment layer and the precursor material comprise at least one reactive mesogen in monomeric, oligomeric or polymeric form.

Abstract: A light-emitting electrochemical cell comprising at least two electrodes, and an electroluminescent material arranged between said electrodes, wherein said electroluminescent material comprises a charged metal complex is disclosed. The charged metal complex has at least one metal atom selected from the group consisting of Ir, Os, Pt, Re and Zn, with the proviso that said metal complex is different from [Ir(ppy)2(dtb-bpy)]+(PF6) and [Os(bpy)2(dppe)]2+(PF6)2. A method for manufacturing such a light-emitting electrochemical cell is also disclosed.

Abstract: The invention pertains to an isosorbide derivative having at least one polymerizable group, characterized in that the isosorbide derivative further comprises at least one photo-convertible group for adjusting the helical twisting power of the isosorbide derivative. According to a preferred embodiment the isosorbide has the formula wherein A stands for a bond or a p-phenylene group; B and B? are independently O—(CH2)oO—CO—CR??CH2, o being 2-12 and R? being H or CH3; P stands for a CH2 or a C?O group; Q and Q? are independently selected from H, C1-C3 alkyl, C1-C3 alkoxy, halogen, and CN; n is an integer from 1 to 3; and m is an integer from 0 to 2.