Illumination apparatus
This disclosure discloses an illumination apparatus. The illumination apparatus comprises a cover comprising a second portion and a first portion, and a light source disposed within the cover. An average thickness of the first portion is greater than that of the second portion.
1. An illumination apparatus comprising:
an outer cover comprising an inner surface and a plurality of diffuser particles of a first concentration;
a light source comprising a lateral surface, an upper surface, and a bottom surface;
a transparent inner cover arranged to space apart from the outer cover and dispose on the lateral surface and the upper surface, and comprising a plurality of diffuser particles of a second concentration which is different from the first concentration;
a wavelength converter disposed on the light source and spatially isolated from the outer cover; and
a reflective layer, separated from the transparent inner cover, directly formed on the inner surface, and only covering the upper surface in a configuration of being arranged only above the upper surface and beneath the outer cover.
2. The illumination apparatus of claim 1 , wherein the transparent inner cover has an upper surface which is convex.
3. The illumination apparatus of claim 1 , wherein the wavelength converter is arranged between the light source and the transparent inner cover.
4. The illumination apparatus of claim 1 , wherein the wavelength converter is arranged on the transparent inner cover.
5. The illumination apparatus of claim 1 , wherein the transparent inner cover is formed in a trapezoidal shape with a wider top surface.
6. The illumination apparatus of claim 1 , wherein the transparent inner cover has a slanted sidewall.
7. The illumination apparatus of claim 1 , wherein the outer cover surrounds the transparent inner cover and the light source substantially in a symmetrical configuration.
8. The illumination apparatus of claim 1 , wherein at least one of the plurality of diffuser particles comprises a material of TiO2, SiO2, or air.
9. The illumination apparatus of claim 1 , wherein the outer cover comprises a material of polymer or glass.
10. The illumination apparatus of claim 1 , further comprising a chamber arranged between the light source and the transparent inner cover.
11. The illumination apparatus of claim 1 , wherein the transparent inner cover has a non-flat upper surface.
12. The illumination apparatus of claim 1 , further comprising a heatsink disposed on the bottom surface of the light source.
13. The illumination apparatus of claim 12 , wherein the heatsink is wider than the light source.
14. The illumination apparatus of claim 12 , wherein the heatsink is wider than the transparent inner cover.
15. The illumination apparatus of claim 1 , wherein the reflective layer is wider than the upper surface.