OPTICAL LENS AND OPTICAL PACKAGE, AND BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME

摘要

An optical lens, an optical package, a backlight assembly, and a display device having the same are provided to improve the luminance uniformity and color mixing efficiency by splitting an interface of a lens into four according to the emergence angle and processing four split interfaces in a predetermined shape. An optical lens(130) includes a groove unit formed like a circle, viewed from a plane and like a bent-V, viewed from a cross section, and provided with a curvature radius of 3.080~4.620mm, 3.696~5.544mm, 4.024~6.036mm, 4.600~6.900mm, 4.768~7.152mm, 4.744~7.116mm, 5.344~8.016mm, 5.760~8.640mm, and 5.384~8.076mm at an angle of 0~5 degrees, 5~10 degrees, 10~15 degrees, 15~20 degrees, 20~25 degrees, 25~30 degrees, 30~35 degrees, 35~40 degrees, and 40~45 degrees to a normal crossing the center line; and a refracting unit formed like a circle, viewed from a plane and extended from the groove unit, viewed from a cross section to refract the light supplied from the lower part or reflected from the groove unit through the interface and then output the refracted light.