A projection apparatus comprising: an image device , configured to convert a first illumination beam (IL1) into an image beam (ML); a lens module ; and an illumination system , wherein the image device is located between the illumination system and the lens module , the illumination system comprising: a first light source comprises a first solid-state illuminating source array comprising green solid-state illuminating sources (G); a first collimating lens element ; a second light source ; a second light collimating lens element ; a light combining element ; and a light homogenizing element , wherein the first illumination beam (IL1) passes through the light homogenizing element and is transmitted to the image device , wherein the second light source comprises a second solid-state illuminating source array , and the second solid-state illuminating source array comprises a plurality of solid-state illuminating sources arranged in an array; and wherein the image beam (ML) exits the projection apparatus through the lens module and is converged to a stop (ST), and the lens module is located between the stop (ST) and the image device , and wherein the second solid-state illuminating source array comprises red solid-state illuminating sources (R) and blue solid-state illuminating sources (B), and colors of light beams emitted from the adjacent solid-state illuminating sources are different. an image device , configured to convert a first illumination beam (IL1) into an image beam (ML); a lens module ; and an illumination system , wherein the image device is located between the illumination system and the lens module , the illumination system comprising: a first light source comprises a first solid-state illuminating source array comprising green solid-state illuminating sources (G); a first collimating lens element ; a second light source ; a second light collimating lens element ; a light combining element ; and a light homogenizing element , wherein the first illumination beam (IL1) passes through the light homogenizing element and is transmitted to the image device , wherein the second light source comprises a second solid-state illuminating source array , and the second solid-state illuminating source array comprises a plurality of solid-state illuminating sources arranged in an array; and wherein the image beam (ML) exits the projection apparatus through the lens module and is converged to a stop (ST), and the lens module is located between the stop (ST) and the image device , and wherein the second solid-state illuminating source array comprises red solid-state illuminating sources (R) and blue solid-state illuminating sources (B), and colors of light beams emitted from the adjacent solid-state illuminating sources are different. a first light source comprises a first solid-state illuminating source array comprising green solid-state illuminating sources (G); a first collimating lens element ; a second light source ; a second light collimating lens element ; a light combining element ; and a light homogenizing element , wherein the first illumination beam (IL1) passes through the light homogenizing element and is transmitted to the image device , wherein the second light source comprises a second solid-state illuminating source array , and the second solid-state illuminating source array comprises a plurality of solid-state illuminating sources arranged in an array; and wherein the image beam (ML) exits the projection apparatus through the lens module and is converged to a stop (ST), and the lens module is located between the stop (ST) and the image device , and wherein the second solid-state illuminating source array comprises red solid-state illuminating sources (R) and blue solid-state illuminating sources (B), and colors of light beams emitted from the adjacent solid-state illuminating sources are different. <EOS>