| 摘要 |
PROBLEM TO BE SOLVED: To improve lighting efficiency.SOLUTION: A lighting film 1 includes: a base part 3 having a plurality of grooves arranged separately along one surface; a plurality of filling parts 4 formed by filling the plurality of grooves with filling material having a refractive index different from the base part; and a cavity filling part 5 formed by filling one or more recessed parts formed by an end face shape on one surface side of the plurality of filling parts with prescribed filling material.SELECTED DRAWING: Figure 1 |
