PHOSPHOR WHEEL AND PROJECTOR HAVING THE PHOSPHOR WHEEL

摘要

A phosphor wheel includes a rotating disk and a wavelength converting layer. The rotating disk has a first surface and a second surface opposite to the first surface, in which the first surface forms a coating region and a non-coating region. The wavelength converting layer is formed on the coating region of the first surface for converting a light wavelength of a light beam. In addition, an embodiment of the invention discloses a projection device having the phosphor wheel. When the rotating disk of the phosphor wheel rotates, the recess portion may disturb the air around the phosphor wheel such that the temperature of the wavelength converting layer may be effectively decreased. Simultaneously, the rotating disk has a stable dynamic balance and the rotating disk has a larger heat dissipating region because the recess portion is disposed on the rotating disk.

主权项

1. A phosphor wheel comprising:
a rotating disk having a first surface and a second surface opposite to the first surface, the first surface forming a coating region and a non-coating region, the rotating disk having at least one recess portion wherein the recess portion is formed on the second surface or the non-coating region of the first surface; and a wavelength converting layer formed on the coating region of the first surface for converting a light wavelength of a light beam.