摘要:
A wavelength converting element (110) comprising a polymeric material having a polymeric backbone, the polymeric material comprising a wavelength converting moiety, wherein the wavelength converting moiety is adapted to convert light of a first wavelength to light of a second wavelength, and wherein the wavelength converting moiety is covalently attached to the polymer backbone and/or covalently incorporated into the polymer backbone. The stability and lifetime of wavelength converting molecules comprised in a polymeric material may be improved by covalently attaching the wavelength converting moieties to the polymeric material.
摘要:
A wavelength converting element (101, 102, 103, 110) comprising a polymeric carrier material comprising a first wavelength converting material adapted to convert light of a first wavelength to light of a second wavelength, wherein the oxygen diffusion coefficient (D) of the polymeric carrier material is 8 x 10 -13 cm 2 /s or less at 25°C. A prolonged lifetime of the wavelength converting material is achieved by selecting a polymeric carrier material with an oxygen diffusion coefficient (D) at 8x10 -13 cm 2 /s or less at 25°C.
摘要:
The invention relates to a method for producing a polymer product having integrated luminescent material particles, the polymer product being produced from at least one monomer in liquid phase and at least one kind of powder of luminescent material particles. The method is characterized by adding the luminescent material to the liquid monomer before polymerisation. The invention further relates to a plastic component for light conversion made of the polymer produced according to said method; a Light-emitting device comprising said plastic component; and the use of a polymer produced according to said method.
摘要:
The invention provides a lighting device (100) comprising a light source (10) and luminescent materials (20). The luminescent materials (20) comprising a first organic luminescent material (120), a second organic luminescent material (220), optionally one or more further organic luminescent materials (320), and optionally one or more further inorganic luminescent materials (420). The light source (10) together with the luminescent materials (20) are configured to generate white lighting device light (101) during operation. The first organic luminescent material (120) degrades with time, the second organic luminescent material degrades with time (220), and the optional one or further organic luminescent materials (320) degrade with time. The luminescent materials (20) are configured to maintain the lighting device light (101) white during operation time of the lighting device (100).
摘要:
The invention provides a lighting device (100) comprising a first set of light emitting diodes (10) arranged to emit light (14) in a first wavelength range of 300 nm-490 nm, a second set of light emitting diodes (11) arranged to emit light (15) in a second wavelength range of 300 nm-490 nm, a first luminescent element (12) radiationally coupled to the first and second set of light emitting diodes and arranged to convert at least a part of the light of the first wavelength range and at least a part of the light of the second wavelength range into first luminescent element light, a second luminescent element (13) radiationally coupled to at least a subset of the second set of light emitting diodes and arranged to convert at least a part of the light (15) of the second wavelength range into second luminescent element light, wherein, during operation, the brightness level of the light (14) emitted by the first set of light emitting diodes (10) and the brightness level of the light (15) emitted by the second set of light emitting diodes (11), respectively, is controllable independently of each other and wherein the lighting device is arranged to generate white lighting device light (101).
摘要:
The present invention relates to a lighting device (100) to stimulate plant growth and bio-rhythm of a plant. The lighting device (100) comprising a solid state light source (102) arranged to emit direct red light having a wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converting member (106) arranged to receive at least part of said direct red light emitted from said solid state light source (102) and to convert said received direct red light to far-red light having a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm.
摘要:
The invention provides a lighting unit comprising a light source, configured to generate light source light, and a light converter, configured remote of the light source and configured to convert at least part of the light source light into luminescent material light. The light converter comprises (a) a yellow light emitting cerium containing garnet luminescent material, (b) a green light emitting luminescent material, (c) a red light emitting organic luminescent material, and (d) a particulate scattering material.