Coretronic Corporation

Shi-Hao Lin

Chung-Cheng Hsu

A projection device is provided. An excitation light source of the projection device emits a first light beam incident to a light wavelength conversion wheel along a first direction. The light wavelength conversion wheel outputs the first light beam at a first timing, and converts the first light beam into a second light beam to be outputted at a second timing. The second light beam exits the light wavelength conversion wheel along a second direction. The first and second light beams sequentially penetrate a color filter wheel and a light homogenizing element, so that an illumination system outputs an illumination beam. The illumination beam is incident to a light valve along a third direction to be converted into an image beam. The image beam exits the light valve along a fourth direction. The first to fourth directions are different from each other and are located on a same plane.

Projection device

A diffusion rotating device disposed on a transmission path of a light beam is provided. The diffusion rotating device includes a substrate, a rotating axis and a driving element. The rotating axis is connected to the substrate. The driving element is connected to the rotating axis, and drives the rotating axis to rotate. The substrate includes a first diffusion region and an optical region disposed adjacent to each other, and the first diffusion region has multiple first diffusion sub-regions, each of the first diffusion sub-regions extends along a circumferential direction of the substrate and the first diffusion sub-regions are arranged concentrically along a radial direction of the substrate, when the first diffusion region is cut into the transmission path of the light beam, the light beam forms a first light spot on the first diffusion region of the substrate. A projection device is also provided.

Growing community of inventors

Hsin-Chu, Taiwan

Shi-Hao Lin