Realization of high-precision micro-groove forming with roll molds for optical films

[Issue]
Video devices such as TVs and displays are becoming higher resolution types, such as "4K8K", and having smaller and more complex structures such as xR (VR/AR/MR, etc.) goggles. In order to achieve these technologies, finer machining of precision molds for optical films and optical elements is required.


[Solution]
The use of fine cutting tools with mono-crystal diamond enables high-precision fine groove forming with continuous pitch in the machining of roll molds for optical films. Mono-crystal diamond has excellent wear resistance and contributes to the long-time continuous machining of large rolls.