Yukihisa Kusuda

Part of Okamoto Glass Co., Ltd., Niko Kogaku KK is a Japanese company that specializes in producing filters that attenuate transparent light at a constant percentage in a selected wavelength range. The filters have a constant permeability in the prescribed wavelength range and can be adjusted using dielectric and metal films. The company also applies a reflection prevention membrane to reduce loss due to reflection and increase permeability. Niko Kogaku KK was acquired by Okamoto Glass Co., Ltd. on April 01, 2020 for $1.40 million.