Projector

A projector comprising:

• a light source module adapted to provide a first beam;
• a wavelength conversion module comprising a reflecting plate and a wavelength conversion layer, the wavelength conversion layer being an annular structure disposed on the reflecting plate;
• a first collimator lens disposed on a position corresponding to the wavelength conversion module;
• a second collimator lens disposed on a position corresponding to the wavelength conversion module;
• a dichroic filter disposed between the light source module and the first collimator lens, the dichroic filter being adapted to reflect a first part of the first beam to form a second beam and allow detouring of a second part of the first beam to form a third beam, the second beam being condensed by the first collimator lens and continuously projected onto the wavelength conversion layer to excite a fourth beam, the dichroic filter being further adapted to allow passing of the fourth beam;
• and
• a reflector disposed between the dichroic filter and the second collimator lens, the third beam being condensed by the second collimator lens and continuously projected onto the reflecting plate to reflect a fifth beam, and the fifth beam being sequentially reflected by the reflector and the dichroic filter to mix with the fourth beam.