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US 9,310,538 B2Granted
Composition for producing a filter material for radiation, method for producing a composition for a filter material, material for filtering radiation, and an optoelectronic device comprising the material
AssigneeOSRAM Opto Semiconductors GmbH
InventorsKlaus Hohn, Michael Schumann, Dirk Sossenheimer
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Abstract
Composition for producing a filter material for radiation includes a silicone and at least one dye dispersed in the silicone, wherein the composition has a relative transmission of less than 20% for radiation of the wavelength of 400 nm to 700 nm, and has a relative transmission of greater than 50% for radiation of the wavelength of 850 nm to 1025 nm.
Claims9
An optoelectronic device which emits or absorbs electromagnetic radiation of a wavelength from a wavelength range of 850 nm to 1025 nm in operation, comprising
- a layer or a component is arranged in a beam path of the device, the layer or the component is directly arranged on the optoelectronic device, the layer or the component comprises a material that filters radiation, and the material is obtained by curing a composition consisting of:
- a silicone block polymer consisting of dialkyl silicone blocks and regions having arylalkyl or diaryl main chain elements,
- wherein the silicone is thermally cured in a range of 60° C. to 180° C., and
- one or more dyes dispersed in the silicone, wherein the composition has a relative transmission of less than 20% for radiation of the wavelength between 400 nm to 700 nm, and a relative transmission of greater than 50% for radiation of the wavelength between 850 nm and 1025 nm at the thickness in a range of 1 μm to 2 mm, and
- wherein the composition is free of solvents.
2 more elements
Dependencies are inferred from the claim text.