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US 2019/0056087 A1Published application
Broadband light source based on crystalline phosphor
AssigneeThorlabs, Inc.
InventorsYifan LIU, Yat-Hei LO, Shengwei CAO
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Abstract
A phosphor based light source, including: an incident beam of light focused onto the front surface of a piece of phosphor; wherein the phosphor has polished back surface coated with a high-reflection, high-thermal-conduction layer, sandwiched between the phosphor and a heat sink, and the phosphor emission light is collected into a fiber or fiber bundle by a single lens or lens groups.
Claims30
A phosphor light source, comprising:
- a collimated beam of incident light;
- a piece of crystalline phosphor;
- and
- a first focusing lens or lens group configured to focus the incident light onto a top surface of the phosphor;
- wherein a maximum thickness from the top surface of the phosphor to the bottom surface of the phosphor is higher than 0.1 mm and smaller than 10 mm, and the top surface of the phosphor is microstructured and coated with a film to reduce the light reflection on the phosphor surface.
2 more elements
Dependencies are inferred from the claim text.