Projection device and light source device thereof

摘要

A light source device includes at least one light emitting diode, at least one dichroic mirror, a condenser, and a fly's eye device. The light emitting diode is operable to generate at least one kind of light. The dichroic mirror is disposed corresponding to the light emitting diode to combine the light into an optical path when the light passes through the dichroic mirror. The condenser is disposed corresponding to the dichroic mirror to gather the light when the light passes through the condenser. The fly's eye device is disposed corresponding to the condenser to homogenize the light when the light passes through the fly's eye device. Furthermore, a projection device is disclosed herein.

主权项

1. A light source device, comprising:
at least one light emitting diode for generating at least one kind of light; at least one dichroic mirror disposed corresponding to the light emitting diode for combining the light into the same optical path when the light passes through the dichroic mirror; a condenser disposed corresponding to the dichroic mirror for gathering the light when the light passes through the condenser; a fly's eye device disposed corresponding to the condenser for homogenizing the light when the light passes through the fly's eye device, wherein the condenser is disposed between the dichroic mirror and the fly's eye device, wherein the fly's eye device comprises a plurality of small lenses for generating a plurality of images when the light passes through the small lenses; a concave condenser disposed corresponding to the fly's eye device for making the images generated by the fly's eye device display on the digital micromirror device and overlap each other when the images pass through the concave condenser; and a group of condensers disposed corresponding to the concave condenser, wherein the group of the condensers comprises a first condenser and a second condenser, and the first condenser and the second condenser are disposed to control the angular magnification of the light source device.