| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens film laminate for lighting equipment which offers, when used with a surface light source device, high front luminance and illuminance, smaller luminance spots and illuminance spots, and improvement in the problem of poor appearance caused by lens films, including glaring appearance and brightness spots.SOLUTION: A lens film laminate for lighting equipment includes a light diffusion member (A), a lens film (B), and a light diffusion layer (C) located therebetween. The lens film (B) comprises a ridged structure aligned in one direction, and the light diffusion layer (C) is laminated on a non-lens surface of the lens film (B) without an air layer in between. The lens film laminate has following properties. (i) The light diffusion member (A) has a ratio of total light transmittance/parallel light transmittance of 8-120. (ii) The lens film (B) has a lens surface having a surface glossiness of 5-80%. (iii) The light diffusion layer (C) has a flared light diffusivity of 0.1-10. |
