Loading patent…
AssigneeNGK Insulators, Ltd.
InventorsJungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Tetsuya Ejiri, Yuichi Iwata
Estimating the term…
A phosphor element includes an incident face for an excitation light, an emitting face opposing the incident face and a side face, and the element converts at least a part of the incident excitation light incident onto the incident face to fluorescence and emits the fluorescence from the emitting face. The emitting face has an area larger than an area of the incident face. The phosphor element comprises an inclination region in which an inclination angle of the side face with respect to a vertical axis perpendicular to the emitting face is monotonously increased from the incident face toward the emitting face, viewed in a cross-section perpendicular to the emitting face and along the longest dividing line halving the emitting face.
A phosphor element comprising an incident face for an excitation light, an emitting face opposing said incident face and a side face, said phosphor element converting at least a part of said excitation light incident onto said incident face into a fluorescence and emitting said fluorescence from said emitting face:
Dependencies are inferred from the claim text.