Core characteristics and technology development status of optical glass materials for camera lenses

For core imaging technologies, various R&D for optical lens design have been carried out to realize highresolution images without distortion. The need for systematic analysis of the optical and physical properties of various materials and the correlation for optical lens design has increased. Therefore, core characteristics of visible optical glass material such as refractive index, dispersion value, transmittance, coefficient of thermal expansion, and striae were reviewed from the viewpoint of improving the performance of optical lenses. In this study, the correlation between the refractive index and dispersion value of the optical glass material and the performance of optical lens module is explained by minimizing the chromatic aberration of various wavelength. In addition, we reviewed the refractive index distribution of global leading group's optical glass, which is the most widely used in optical lens manufacturing, and the current status of optical glass technology development at KOPTI.