OPTICS & PHOTONICS International 2021 Congress | The largest conference of OPTICS and PHOTONICS in Japan and one of the largest and most prestigious events in the field worldwide. The objective of OPIC2020 is to discuss the future of our society which will be realized by optics and photonics, based on the most updated knowledge and technologies worldwide, presented at OPIC2019 and OPIE’19 (OPTICS and PHOTONICS International Exhibition 2020).