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US 2015/0092392 A1Published application
Generation of white light
AssigneeSchott AG
InventorsBernd WOELFING, Volker HAGEMANN, Juergen Meinl
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Abstract
An arrangement for generating white light is provided. The arrangement generates the white light by combining blue light and yellow light. The yellow light originates from a converter which transforms into yellow light virtually all blue light that enters the converter.
Claims20
An arrangement for generating white light, comprising:
- an excitation light source with blue light;
- a converter for converting blue light from the excitation light source into yellow light;
- a support of the converter for aligning the converter in a remission geometry in an angle relative to the excitation light source and in a direction of illumination;
- and
- a coating on a surface of the converter for adjusting a fraction of reflected light relative to a fraction of entering light;
- wherein the converter has a thickness as measured from the surface of the converter to the support sufficient so that substantially all the blue light that enters is converted into the yellow light.
3 more elements
An arrangement for generating white light, comprising:
- an excitation source with blue light;
- a converter for converting incident blue light into emitted yellow light;
- and
- a support of the converter for aligning the converter in a remission geometry in an angle relative to the excitation light source and in a direction of illumination,
- wherein the converter has a thickness as measured from a surface of the converter to the support that is sufficient so that substantially all the blue light that enters is converted into the yellow light.
2 more elements
Dependencies are inferred from the claim text.