Patent ID: 9658520
Date: 2017-05-23
CPC Classifications: B82Y,F21K,F21L,F21V,F21Y,G02B,G03B,H01L,Y10S

Claim:
1. A wavelength converting member comprising: a sealed capsule, the sealed capsule comprising sintered polycrystalline ceramic, the capsule defining at least one sealed cavity, the capsule having a thickness and at least one edge; an opening in the capsule through which the wavelength converting material was introduced into the capsule prior to being sealed, the opening having a width less than a width of the at least one edge of the capsule; a seal material blocking the opening after the cavity was filled with the wavelength converting material, the opening having the same dimensions after sealing as before sealing; and a wavelength converting material contained within the sealed cavity, wherein said sealed capsule defines a plurality of individual, sealed cavities containing a plurality of wavelength converting materials forming a color wheel in a digital image projector, wherein each sealed cavity include different wavelength converting materials and the color wheel is rotatable around a rotation axis, the rotation axis extending in the normal direction to a plane of the color wheel.