OPTICAL LENS, BACKLIGHT MODULE AND DISPLAY DEVICE

摘要

Disclosed are an optical lens, a backlight module and a display device. The optical lens (200) comprises a platform portion (210) and a plurality of lens portions (220). The platform portion (210) has a light emergent surface (211) and a lower surface (212) opposite the light emergent surface (211). The lens portions (220) are disposed on the lower surface (212) of the platform portion (210). Each of the lens portions (220) has a main body (221), a light incident surface (222) and a reflection side surface (223). The light incident surface (222) is located on a bottom face of the main body (221). The reflection side surface (223) connects the light incident surface (222) and the lower surface (212) of the platform portion (210). Each main body (221) has a thickness gradually increasing from one end of the main body (221) adjacent to the light incident surface (222) to the other end of the main body (221) adjacent to the lower surface (212) of the platform portion (210). A backlight module and a display device comprising the optical lens are also provided.