Light reflecting lens
A light reflecting lens includes a lens body, a light diffusion layer, and a light-transmitting cover layer. The lens body has a front surface and a back surface opposite to each other. The light diffusion layer includes spread aggregates formed by spraying a dispersion of light-transmitting resinous micro-beads and is formed on one of the front and back surfaces of the lens body. The light-transmitting cover layer is formed on the light diffusion layer. The spread aggregates have a mean aggregate size such that the light reflecting lens has a haze not larger than 3% and a transmittance not less than 3%.
1. A light reflecting lens, comprising:
a lens body having a front surface and a back surface opposite to each other;
a light diffusion layer which includes spread aggregates formed by spraying a dispersion of light-transmitting resinous micro-beads and which is formed on one of said front and back surfaces of said lens body, wherein the light-transmitting resinous micro-beads are made from silane polymer; and
a light-transmitting cover layer formed on said light diffusion layer,
wherein said spread aggregates have a mean aggregate size ranging from 10 μm to 80 μm, such that the light reflecting lens has a haze not larger than 3% and a transmittance not less than 3%.
2. The light reflecting lens according to claim 1 , wherein the mean aggregate size of said spread aggregates ranges from 30 μm to 50 μm.
3. The light reflecting lens according to claim 1 , wherein said lens body includes a peak-and-valley configuration which is formed on the other of said front and back surfaces of said lens body.
4. The light reflecting lens according to claim 1 , further comprising a light reflective layer which is disposed between said light diffusion layer and said light-transmitting cover layer.
5. The light reflecting lens according to claim 4 , wherein said light reflective layer is made from a material selected from the group consisting of metal oxide, metal sulfide, metal nitride, chromium, aluminum, nickel, an alloy of nickel and chromium, a dielectric material, and combinations thereof.
6. The light reflecting lens according to claim 4 , further comprising a polarizing layer which is disposed between said lens body and said light diffusion layer.
7. The light reflecting lens according to claim 4 , further comprising an anti-reflective layer which is formed on at least one of said lens body and said light-transmitting cover layer and which is distal from said light diffusion layer.
8. The light reflecting lens according to claim 7 , wherein said anti-reflective layer is made from a material selected from the group consisting of magnesium fluoride, silicon dioxide, titanium oxide, niobium oxide, tantalum oxide, aluminum oxide, and combinations thereof.
9. The light reflecting lens according to claim 1 , wherein said light-transmitting cover layer is made from a material selected from the group consisting of a thermoplastic polymer, a thermosetting polymer, a radiation-curable polymer, and combinations thereof.
10. The light reflecting lens according to claim 1 , wherein said light diffusion layer has a surface roughness ranging from 40 nm to 500 nm.
11. The light reflecting lens according to claim 10 , wherein the surface roughness of said light diffusion layer ranges from 100 nm to 200 nm.
12. The light reflecting lens according to claim 1 , wherein the haze of said light reflecting lens ranges from 0.5% to 3% and the transmittance of said light reflecting lens ranges from 3% to 80%.
13. The light reflecting lens according to claim 1 , wherein said light diffusion layer and said light-transmitting cover layer are of dimensions such that the light reflecting lens has a thickness ranging from 0.5 mm to 4 mm.