High efficiency and uniformity white light generator stimulated by laser

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11422448
APP PUB NO 20200409250A1
SERIAL NO

16979207

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Abstract

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A white light source comprises a luminescent layer comprising a phosphor and light scattering material disposed in a binder, and a light source arranged to illuminate the luminescent layer with blue light. The white light source outputs white light comprising converted phosphor emission light from the phosphor illuminated by the blue light and unconverted scattered blue light that is scattered by the light scattering material. The unconverted scattered blue light has a spatial distribution matching a spatial distribution of the converted phosphor emission light. In some embodiments the spatial distributions are approximately Lambertian spatial distributions. The white light source may comprise a phosphor wheel including a disk-shaped substrate on which the luminescent layer is disposed as a phosphor ring. The phosphor ring may comprise the phosphor and light scattering material disposed in the binder with uniform composition around the annulus of the phosphor ring.

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Patent Owner(s)

Patent OwnerAddress
MATERION PRECISION OPTICS (SHANGHAI) LIMITEDPUDONG SHANGHAI 200131

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Xu, Ying Shanghai, CN 190 1542
Zhang, Wen Bo Shanghai, CN 7 45

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