Camera flash lens and portable device including the same
View Patent ↗A camera flash lens for a plurality of light emitting diodes (LEDs) mounted on a board and serving as a light source of a camera flash, includes a plurality of annular lenses corresponding to the plurality of LEDs, respectively. The plurality of annular lenses each include an edge portion extending toward the board to reflect and collect light emitted from the edge of a corresponding LED of the plurality of LEDs, and a central portion having an inner surface with a Fresnel shape or a curved shape to collect light emitted from the top of the corresponding LED.
1. A camera flash lens for a plurality of light emitting diodes (LEDs) mounted on a board and serving as a light source of a camera flash, the camera flash lens comprising a plurality of annular lenses corresponding to the plurality of LEDs, respectively, the plurality of annular lenses each comprising:
an edge portion extending toward the board to reflect and collect light emitted from an edge of a corresponding LED of the plurality of LEDs; and
a central portion having an inner surface with a Fresnel shape or a curved shape, the inner surface facing the board to collect light emitted from a top of the corresponding LED.
2. The camera flash lens of claim 1 , wherein the edge portions contact each other.
3. The camera flash lens of claim 1 , wherein the edge portions are conjoined, forming a boundary therebetween, the boundary extending toward the board.
4. The camera flash lens of claim 1 , wherein the edge portions are conjoined without a boundary therebetween.
5. The camera flash lens of claim 1 , wherein the central portion corresponds to the center of the corresponding LED.
6. The camera flash lens of claim 1 , wherein the edge portion has an outer circumference being at an acute angle to an optical axial direction from the board toward the annular lens.
7. The camera flash lens of claim 1 , wherein the camera flash lens is formed of an acrylic material.
8. A portable device comprising:
a plurality of light emitting diodes (LEDs) provided as a light source;
a board on which the plurality of LEDs are mounted; and
a plurality of annular lenses corresponding to the plurality of LEDs, respectively, the plurality of annular lenses each comprising:
an edge portion extending toward the board to reflect and collect light emitted from an edge of a corresponding LED of the plurality of LEDs; and
a central portion having an inner surface with a Fresnel shape or a curved shape, the inner surface facing the board to collect light emitted from a top of the corresponding LED.
9. The portable device of claim 8 , wherein the edge portions contact each other.
10. The portable device of claim 8 , wherein the edge portions are conjoined, forming a boundary therebetween, the boundary extending toward the board.
11. The portable device of claim 8 , wherein the edge portions are conjoined without a boundary therebetween.
12. The portable device of claim 8 , wherein the central portion corresponds to the center of the corresponding LED.
13. The portable device of claim 8 , wherein the edge portion has an outer circumference being at an acute angle to an optical axis from the board toward the annular lens.
14. The portable device of claim 8 , wherein the camera flash lens is formed of an acrylic material.