Projection apparatus and light source apparatus having wavelength conversion device and filter device

A projection apparatus, comprising a light source apparatus, a light valve, and a projection lens,

• wherein the light source apparatus is configured to provide an illumination light beam and comprises at least one first light source, at least one second light source, a wavelength conversion device, a filter device, and a dichroic device,
• wherein the at least one first light source is configured to provide a first light beam;
• the at least one second light source is configured to provide a second light beam, wherein a wavelength of the first light beam is different from a wavelength of the second light beam;
• the wavelength conversion device is disposed on a transmission path of the first light beam from the at least one first light source and configured to convert the first light beam into a conversion light beam;
• the filter device corresponds to the wavelength conversion device and is disposed between the at least one first light source and the wavelength conversion device and disposed between the at least one second light source and the wavelength conversion device, and is configured to allow the first light beam and the conversion light beam to pass through and reflect the second light beam, wherein the wavelength conversion device having a first surface, the filter device is located near or on the first surface, and the illumination light beam comprises the conversion light beam reflected from the wavelength conversion device and the second light beam reflected from the filter device;
• the dichroic device is configured to allow the first light beam from the at least one first light source and the second light beam from the at least one second light source to pass through a front surface of the dichroic device, wherein a back surface of the dichroic device faces the filter device, so that the second light beam passes through the front surface of the dichroic device but is reflected when incident on the back surface of the dichroic device;
• the light valve is disposed on a transmission path of the illumination light beam and configured 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, wherein the image light beam becomes a projection light beam after passing through the projection lens.