| abstract |
The present invention provides a method for producing a combined optical film, in which end surfaces of a plurality of optical films are butted against each other, and a gap between the butted end surfaces can be narrowed. A method of manufacturing a combined optical film in which at least one end surfaces of a plurality of optical films are abutted with each other, the step (1) of abutting the end surfaces of the optical films with a gap therebetween, and the optical The step (2) of attaching the first sealing material to the abutting portion of the film from the first single side of the optical film and connecting the optical film, and the abutting portion of the connected optical film affix the first sealing material. The step (3) of bending the second optical film to be concave on the second one surface side of the optical film, and narrowing the gap on the second single surface side, and curving the connected optical film to form the gap on the second single surface side The step (4) of sticking the second sealing material to the butted portion on the second one side in a state where the width of the second optical fiber is narrowed, and the step (5) of releasing and flattening the curved optical film are connected. That. [Selection] Figure 1 |