SIGMA KOKI is your global supplier of quality Laser Components and Application System.

"OptoSigma" is our global brand which aims to provide quality solutions and contributes to our society with "Light". Our Laser Components (Optics, Opto-mechanics and Motion Control) are built from the superior manufacturing technique and vast experience of laser applications. Our wide range of Application Systems has been offered to R&D and applications of measurement, inspection, evaluation & analysis in semiconductor, FPD & other industries.

SIGMA KOKI has developed and expanded our state of the art facilities that consistently produces high quality, high value-added products to support your current and future business growth.