Projector

Abstract

A projector includes a display screen, an imaging system adapted to provide an optical image, a reflector arranged on a transmission path of the optical image, and an optical transmission medium disposed inside the refraction space. The refraction space is formed between the reflector and the display screen. The optical image travels through the optical transmission medium by the reflection of the reflector and is transmitted to the display screen. A refractive index of the optical transmission medium is not equal to one.

1 . A projector, comprising:
 a display screen;   an imaging system adapted to provide an optical image;   a reflector arranged on a transmission path of the optical image, a refraction space being formed between the reflector and the display screen; and   an optical transmission medium disposed inside the refraction space, the optical image travelling through the optical transmission medium by the reflection of the reflector and being transmitted to the display screen, wherein a refractive index of the optical transmission medium is not equal to one.   
   
   
       2 . The projector according to  claim 1 , wherein the reflector comprises a reflection mirror or a Fresnel reflection mirror. 
   
   
       3 . The projector according to  claim 2 , wherein the Fresnel reflection mirror has a reflection curved surface. 
   
   
       4 . The projector according to  claim 3 , wherein the reflection curved surface comprises a plurality of convex or concave spherical patterns. 
   
   
       5 . The projector according to  claim 1 , wherein the refraction space is filled with the optical transmission medium. 
   
   
       6 . The projector according to  claim 1 , wherein the refractive index of the optical transmission medium changes with the transmission direction of the optical image. 
   
   
       7 . The projector according to  claim 1 , wherein the optical transmission medium comprises liquid crystals, a solid material, a liquid material and a combination thereof. 
   
   
       8 . The projector according to  claim 7 , wherein the solid material comprises a dopant. 
   
   
       9 . The projector according to  claim 7 , wherein the solid material comprises SiO 2 , a plastic material and a combination thereof. 
   
   
       10 . The projector according to  claim 9 , wherein the solid material is SiO 2 . 
   
   
       11 . The projector according to  claim 10 , wherein the dopant is indium. 
   
   
       12 . The projector according to  claim 9 , wherein the plastic material comprises polycarbonate, polymethyl methacrylate and a combination thereof. 
   
   
       13 . The projector according to  claim 7 , wherein the solid material has a light emission surface and the light emission surface is a curved surface. 
   
   
       14 . The projector according to  claim 13 , wherein the curved surface comprises a plurality of convex or concave spherical patterns. 
   
   
       15 . The projector according to  claim 7 , wherein the liquid material comprises water, an organic solvent, and a combination thereof.