Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction

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Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers > Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction

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• F21K 9/61 using light guides
• F21K 9/62 using mixing chambers, e.g. housings with reflective walls
• F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
• F21K 9/66 Details of globes or covers forming part of the light source
• F21K 9/68 Details of reflectors forming part of the light source
• F21K 9/69 Details of refractors forming part of the light source