| 摘要 |
A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module. |
| 主权项 |
1. A projection apparatus, comprising:
an optical engine base; a light source, disposed at the optical engine base for emitting an illumination beam; a light valve, disposed at the optical engine base for converting the illumination beam into an image beam; a lens module, disposed at the optical engine base and comprising:
a lens barrel; anda lens assembly, disposed in the lens barrel for converting the image beam into a projection beam; a fan, disposed at the optical engine base and adjacent to the lens module, the fan used for providing an air flow to cool the lens module directly, wherein the lens barrel further comprises at least one opening disposed at the optical engine base, and the air flow flows to the lens assembly through the opening; a temperature sensor for sensing a temperature value of the lens module; and a control circuit, electrically connected to the temperature sensor and the fan and controlling a rotation speed of the fan according to the temperature value. |
