TRANSPARENT FILM HAVING IMPROVED LIGHTING PERFORMANCE, AND MANUFACTURING METHOD THEREFOR

A transparent film having improved lighting performance, and a manufacturing method therefor are disclosed. According to a preferable embodiment of the present invention, the transparent film having improved lighting performance has a plurality of transmission and refraction parts formed at predetermined intervals on the surface of a support film, a cross-section of each of the transmission and refraction parts comprises a flat part, which has a predetermined height from the planar surface of the support film, and an inclined part extended from one end of the flat part to the plane of the support film, and the flat part is bonded to a glass window by an adhesive. Sunlight directly entering through the glass window is refracted and then is directed toward the bottom surface or is reflected at the inclined part and then is directed toward the ceiling, thereby entering deeply into an indoor place, and thus lighting effects are improved. In addition, since light entering perpendicularly to the flat part is transmitted in the same direction without being refracted, an indoor person can observe an outside landscape or an outside object as is, and thus the frustration of being incapable of observing the outside when using a window blind has been solved.