Patent ID: 11917340
Assignee: CORETRONIC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A projection device, comprising an illumination system, a control element, a driving element, a light valve, and a projection lens, wherein
the illumination system comprises a plurality of light sources, and the plurality of light sources provide a plurality of light beams for being combined into an illumination light beam;
the driving element is coupled to the plurality of light sources, the driving element respectively drives the plurality of light sources in a first mode or a second mode, so that the plurality of light beams provided by the plurality of light sources have respective luminous brightness, and the driving element is switched from the first mode to the second mode according to a first signal;
the control element is coupled to the driving element and provides the first signal to the driving element according to an optical state or a time state of the projection device;
the light valve is disposed on a transmission path of the illumination light beam to convert the illumination light beam into an image light beam; and
the projection lens is disposed on a transmission path of the image light beam to project the image light beam out of the projection device.