Light source assembly and projection apparatus

A projection apparatus, comprising:

• a light source assembly, providing an illumination beam, wherein the light source assembly comprises:
• a substrate, comprising a plurality of light-emitting units;
• a fixing base, fixed onto the substrate and comprising a bottom and at least one wall, wherein a recess is formed at least by the bottom and the at least one wall;
• an adjusting frame, movably disposed in the recess and having an opening;
• an adjusting plate, movably disposed in the opening of the adjusting frame;
• and
• a lens plate, fixed onto the adjusting plate and comprising a plurality of lenses,
• wherein a plurality of first through-holes are formed in the bottom of the fixing base and a plurality of second through-holes are formed in the adjusting plate such that the plurality of light-emitting units are exposed from the adjusting plate;
• a light engine assembly, provided for converting the illumination beam into an image beam;
• and
• a projection lens assembly, provided for projecting the image beam onto a projection object.