| 摘要 |
This invention relates to collimator (100) for a light source (108), the collimator (100) comprising: a body (106), a cavity (110) formed on a bottom side (120) of the body (106) for housing the light source (108), the cavity (110) having an entrance surface (112, 114) arranged for receiving light generated by the light source (108), a total internal reflection, TIR, surface (124) provided at a side surface (104) of the body (106), an exit surface (102) provided at a top side (122) of the body (106) and arranged for emission of collimated light, wherein the entrance surface (112, 114) comprises surface roughness having a roughness value, such that improved light mixing of light from the light source (108) entering the collimator (100) is achieved. |
