Light source and backlight module with the same
View Patent ↗The invention disclosed a light source, comprising a light tube and a plurality of prism members disposed on an outer surface of the light tube for reducing amount of external lights entering the light tube. According to the invention, the prism members disposed on the outer surface of the light tube can not only focus the light emitting from the light tube, but also increase the possibility of total reflection of the incident light.
1. A light source, comprising a light tube and a plurality of prism members disposed on an outer surface of the light tube for reducing amount of external lights entering the light tube, wherein the prism members comprise pyramid-like prism blocks.
2. The light source according to claim 1 , wherein the prism block is selected from the group consisting of triangular pyramid, rectangular pyramid, cone, truncated cone and dome shape.
3. The light source according to claim 2 , wherein an apex angle of the pyramid or the cone is in a range of about 50 to about 160 degrees.
4. A backlight module, comprising: a light guide plate; at least one light source, disposed on at least one side of the light guide plate; and a reflective cover enclosing the light source, wherein the light source comprises a plurality of prism members disposed on an outer surface of the light tube for reducing amount of external lights entering the light tube, and the prism members comprise pyramid-like prism blocks.
5. The backlight module according to claim 4 , wherein the prism block is selected from the group consisting of triangular pyramid, rectangular pyramid, cone, truncated cone, and dome shape.
6. The backlight module according to claim 5 , wherein an apex angle of the pyramid or the cone is in a range of about 50 to about 160 degrees.