| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device in which a light source is discreet and whose weight is light.SOLUTION: A lighting device 10 includes an optical sheet having a sheet-like main body 35 and a plurality of unit optical elements 40 arranged on one surface 35b of the main body, and a light source 20 for projecting light from one side to the other side in the first direction din parallel with an arrangement direction of the unit optical element. The optical sheet includes a light dispersion layer 31 having a dispersion component 31b and a non-light dispersion layer 32 where the dispersion component is not dispersed. The unit optical element is included in the non-light dispersion layer. The light source has one or more light-emitting members 25. Each of the light emitting members is arranged in such a way that its light axis pd may face to a position on the surface where the unit optical element of the optical sheet and at least a part of the light emitted by each of the light emitting members is directly incident to the optical sheet. |
