Light source module and projection apparatus

A projection apparatus, comprising a light source module, an imaging element, and a projection lens, wherein

• the light source is configured to provide an illumination beam, and the light source module comprises:
• a blue light source, configured to provide a blue light beam;
• a red light source, configured to provide a red light beam;
• a wavelength conversion wheel, disposed on a transmission path of the blue light beam and having a first wavelength conversion region, wherein the first wavelength conversion region is rotated onto the transmission path of the blue light beam, and the blue light beam is converted by the first wavelength conversion region to generate a green light beam;
• and
• a filter wheel, disposed on transmission paths of the blue light beam and the red light beam and comprising a first filter region and a diffusion region,
• wherein a filter spectrum of the first filter region comprises a first bandwidth allowing the green light beam to pass through and a second bandwidth allowing the red light beam to pass through, the first bandwidth and the second bandwidth are separated from each other, and the light source module provides an illumination beam based on the blue light source, the red light source, the wavelength conversion wheel, and the filter wheel;
• and wherein the light source module is configured to have at least one mode, the blue light source is turned on to provide the blue light beam so as to generate the green light beam by the first wavelength conversion region during the at least one mode and the red light source is turned on to provide the red light beam during the at least one mode, and the first filter region is configured so that the green light beam and the red light beam passes through the first filter region at the same time during the at least one mode;
• the imaging element is disposed on a transmission path of the illumination beam and configured to convert the illumination beam into an image beam;
• and
• the projection lens is disposed on the transmission path of the image beam and configured to project the image beam to a projection target.

A light source module, configured to provide an illumination beam, comprising:

• a blue light source, a red light source, a wavelength conversion wheel, and a filter wheel, wherein
• the blue light source is configured to provide a blue light beam,
• the red light source is configured to provide a red light beam,
• the wavelength conversion wheel is disposed on a transmission path of the blue light beam and has a first wavelength conversion region, wherein the first wavelength conversion region is rotated onto the transmission path of the blue light beam, and the blue light beam is converted by the wavelength conversion region to generate a green light beam, and
• the filter wheel is disposed on transmission paths of the blue light beam and the red light beam and comprises a first filter region and a diffusion region,
• wherein a filter spectrum of the first filter region covers a first bandwidth and a second bandwidth, the first bandwidth and the second bandwidth are separated from each other, the first filter region is configured so that the green light beam passes through the filter region when the first filter region is at the path of the green light beam and the red light beam passes through the first filter region when the first filter region is at the path of the red light beam, and the blue light beam passes through the diffusion region, and wherein the filter wheel is configured to output the red light beam when the red light source is turned on and the blue light source is turned off.

A projection apparatus, comprising a light source module, an imaging element, and a projection lens, wherein

• the light source is configured to provide an illumination beam, and the light source module comprises:
• a blue light source, configured to provide a blue light beam;
• a red light source, configured to provide a red light beam;
• a wavelength conversion wheel, disposed on a transmission path of the blue light beam and having a first wavelength conversion region, wherein the first wavelength conversion region is rotated onto the transmission path of the blue light beam, and the blue light beam is converted by the first wavelength conversion region to generate a green light beam;
• and
• a filter wheel, disposed on transmission paths of the blue light beam and the red light beam and comprising a first filter region and a diffusion region,
• wherein a filter spectrum of the first filter region covers a first bandwidth and a second bandwidth, the first bandwidth and the second bandwidth are separated from each other, the first filter region is configured so that the green light beam passes through the filter region when the first filter region is at the path of the green light beam and the red light beam passes through the first filter region when the first filter region is at the path of the red light beam, and the light source module provides an illumination beam based on the blue light source, the red light source, the wavelength conversion wheel, and the filter wheel, and wherein the filter wheel is configured to output the red light beam when the red light source is turned on and the blue light source is turned off;
• the imaging element is disposed on a transmission path of the illumination beam and configured to convert the illumination beam into an image beam;
• and
• the projection lens is disposed on the transmission path of the image beam and configured to project the image beam to a projection target.