Light emitting apparatus
There is provided a light emitting apparatus including: at least one pair of lead frames; a light emitting device electrically connected to the lead frames to emit ultraviolet rays; a body including a side wall surrounding the light emitting device, and a groove portion formed in an upper surface of the side wall to receive an adhesive; and a lens part disposed above the light emitting device and fixed to the upper surface of the side wall of the body by the adhesive.
1. A light emitting apparatus comprising:
at least one pair of lead frames;
a light emitting device electrically connected to the lead frames to emit ultraviolet rays;
a body including a side wall surrounding the light emitting device, and a groove portion formed in an upper surface of the side wall to receive an adhesive; and
a lens part disposed above the light emitting device and fixed to the upper surface of the side wall of the body by the adhesive such that the adhesive is sealed within the groove portion by the lens part and the side wall to prevent the adhesive from being exposed to the emitted ultraviolet rays.
2. The light emitting apparatus of claim 1 , further comprising:
an ultraviolet light reflecting part formed on a bottom surface of the lens part.
3. The light emitting apparatus of claim 2 , wherein the lens part is disposed to allow the ultraviolet light reflecting part to cover the groove portion.
4. The light emitting apparatus of claim 2 , wherein the ultraviolet light reflecting part includes at least one of silver (Ag), nickel (Ni), aluminum (Al), rhodium (Rh), palladium (Pd), iridium (Ir), magnesium (Mg), zinc (Zn), platinum (Pt), and gold (Au).
5. The light emitting apparatus of claim 1 , wherein the groove portion is formed in the upper surface of the side wall as a ring.
6. The light emitting apparatus of claim 1 , wherein the groove portion is provided in plural.
7. The light emitting apparatus of claim 1 , wherein the body has a concave portion surrounded by the side wall to expose at least a portion of the lead frames on a bottom surface thereof, and
the lens part is disposed to seal the concave portion.
8. The light emitting apparatus of claim 7 , wherein the groove portion is formed in the upper surface of the side wall along an outer periphery of the concave portion.
9. The light emitting apparatus of claim 7 , further comprising:
an inert gas filling the concave portion.
10. The light emitting apparatus of claim 9 , wherein the inert gas includes at least one of nitrogen (N 2 ), argon (Ar), and helium (He).
11. The light emitting apparatus of claim 7 , wherein the concave portion is maintained in a vacuum state.
12. The light emitting apparatus of claim 1 , wherein the side wall includes at least one surface having a slope structure in order to allow light emitted from the light emitting device to be reflected upwardly.
13. The light emitting apparatus of claim 1 , further comprising:
a reflective metal layer formed on at least one surface of the side wall to upwardly reflect the light emitted from the light emitting device.
14. The light emitting apparatus of claim 1 , wherein the body further includes a support part protruding upwardly from the upper surface of the side wall and disposed adjacent to an outer peripheral surface of the lens part.
15. The light emitting apparatus of claim 14 , wherein the support part is formed integrally with the side wall.
16. The light emitting apparatus of claim 1 , further comprising:
a sub-mount disposed on the lead frames, the light emitting device being disposed on the sub-mount.