The illumination unit according to claim 2, wherein the second reflector comprises:na first region aligned with the at least one light source module and being the at least one first flat surface;a second region being a first inclined surface which is inclined downward from the first region; anda third region being a second inclined surface which is inclined upward from the second region, the inclined surfaces including the first and second inclined surface.
›5.↳ 4The illumination unit according to claim 4, wherein the first and second inclined surfaces are disposed next to each other about the at least one infl…d4
The illumination unit according to claim 4, wherein the first and second inclined surfaces are disposed next to each other about the at least one inflection point.
›6.↳ 4The illumination unit according to claim 4, wherein the second region is disposed between the first region and the third region, andnwherein the third…d4
The illumination unit according to claim 4, wherein the second region is disposed between the first region and the third region, andnwherein the third region is disposed next to the second region.
›7.↳ 4The illumination unit according to claim 4, wherein the first inclined surface is a curved surface having a first radius of curvature, andnwherein the…d4+2
The illumination unit according to claim 4, wherein the first inclined surface is a curved surface having a first radius of curvature, andnwherein the second inclined surface is a curved surface having a second radius of curvature.
›8.↳ 7The illumination unit according to claim 7, wherein the first radius of curvature is greater than the second radius of curvature.d5
The illumination unit according to claim 7, wherein the first radius of curvature is greater than the second radius of curvature.
›9.↳ 7The illumination unit according to claim 7, wherein the first radius of curvature and the second radius of curvature are equal to each other.d5
The illumination unit according to claim 7, wherein the first radius of curvature and the second radius of curvature are equal to each other.
›10.↳ 4The illumination unit according to claim 4, wherein at least one of the first inclined surface or the second inclined surface is a convexly curved sur…d4
The illumination unit according to claim 4, wherein at least one of the first inclined surface or the second inclined surface is a convexly curved surface.
›11.↳ 4The illumination unit according to claim 4, wherein at least one of the first inclined surface or the second inclined surface is a concavely curved su…d4
The illumination unit according to claim 4, wherein at least one of the first inclined surface or the second inclined surface is a concavely curved surface.
›12.↳ 4The illumination unit according to claim 4, wherein the first inclined surface is a second flat surface having a first gradient and the second incline…d4+1
The illumination unit according to claim 4, wherein the first inclined surface is a second flat surface having a first gradient and the second inclined surface is a third flat surface having a second gradient.
›13.↳ 12The illumination unit according to claim 12, wherein the first gradient is greater than the second gradient.d5
The illumination unit according to claim 12, wherein the first gradient is greater than the second gradient.
›14.↳ 4The illumination unit according to claim 4, wherein the first region is provided with a specular-reflection sheet, andnwherein the second region and t…d4
The illumination unit according to claim 4, wherein the first region is provided with a specular-reflection sheet, andnwherein the second region and third region are provided with at least one of a specular-reflection sheet or a diffuse-reflection sheet.
›15.↳ 4The illumination unit according to claim 4, wherein the first, second, and third regions have different surface roughness values.d4
The illumination unit according to claim 4, wherein the first, second, and third regions have different surface roughness values.
›16.↳ 4The illumination unit according to claim 4, wherein the at least one light source module is spaced apart from the first reflector by a first distance,…d4
The illumination unit according to claim 4, wherein the at least one light source module is spaced apart from the first reflector by a first distance,nwherein the at least one light source module is spaced apart from the first region of the second reflector by a second distance, andwherein the first distance is less than the second distance.
›17.↳ 4The illumination unit according to claim 4, wherein the at least one light source module contacts with both the first reflector and the first region o…d4
The illumination unit according to claim 4, wherein the at least one light source module contacts with both the first reflector and the first region of the second reflector.
›18.↳ 4The illumination unit according to claim 4, wherein the first region overlaps with the first reflector, andnwherein a width of the first region is les…d4
The illumination unit according to claim 4, wherein the first region overlaps with the first reflector, andnwherein a width of the first region is less than a width of the first reflector.
›19.↳ 4The illumination unit according to claim 4, wherein the second reflector further comprises a fourth region disposed next to the third region and locat…d4+1
The illumination unit according to claim 4, wherein the second reflector further comprises a fourth region disposed next to the third region and located at a center of the second reflector.
›20.↳ 19The illumination unit according to claim 19, wherein the fourth region has a gentle shape without a pointed portion.d5
The illumination unit according to claim 19, wherein the fourth region has a gentle shape without a pointed portion.
