Light source module and projector using the same

A light source module, comprising:

• a monochromatic light source emitting a first color light;
• a rotating wheel having a light transmitting area and a wavelength transforming area, wherein the wavelength transforming area is coated with a first wavelength transforming material capable of transforming the first color light into a second color light;
• a filter wheel rotating at a same rotation speed with the rotating wheel, wherein the filter wheel has a first color filter area and a second color filter area respectively corresponding to the light transmitting area and the wavelength transforming area;
• a dichroic mirror disposed between the rotating wheel and the filter wheel, wherein the dichroic mirror reflects the first color light to the rotating wheel and allows the second color light to pass therethrough;
• a reflecting mirror module having a plurality of reflecting mirrors;
• wherein when the first color light is incident onto the light transmitting area, the first color light transmits through the rotating wheel, passes along a first light path, and transmits through the first color filter area, and wherein when the first color light is incident onto the wavelength transforming area, the first color light is transformed into the second color light that passes along a second light path and transmits through the second color filter area;
• wherein when the first color light transmits through the rotating wheel, the first color light is reflected to one surface of the dichroic mirror by the reflecting mirror module and then reflected by the other surface of the dichroic mirror to transmit through the first color filter area, wherein the second color light passes along the second light path to transmit through the dichroic mirror and then transmits through the second color filter area, wherein the part of the first light path after the first color light that has be incident onto the other surface of the dichroic mirror overlaps the part of the second light path after the second color light that has transmitted through the dichroic mirror.

A light source module, comprising:

• a monochromatic light source emitting a first color light;
• a rotating wheel having a light transmitting area and a wavelength transforming area, wherein the wavelength transforming area is coated with a first wavelength transforming material capable of transforming the first color light into a second color light, the wavelength transforming area further includes a second wavelength transforming material for transforming the first color light into a third color light;
• a filter wheel rotating at a same rotation speed with the rotating wheel, wherein the filter wheel has a first color filter area and a second color filter area respectively corresponding to the light transmitting area and the wavelength transforming area, the filter wheel further includes a third color filter area corresponding to the wavelength transforming area;
• a dichroic mirror disposed between the rotating wheel and the filter wheel, wherein the dichroic mirror reflects the first color light to the rotating wheel and allows the second color light to sass therethrough;
• wherein when the first color light is incident onto the light transmitting area, the first color light transmits through the rotating wheel, passes along a first light path, and transmits through the first color filter area, and wherein when the first color light is incident onto the wavelength transforming area, the first color light is transformed into the second color light that passes along a second light path and transmits through the second color filter area, wherein both the second color light and the third color light pass along the second light path, and then the second color light transmits through the second color filter area and the third color light transmits through the third color filter area respectively.