Recently, Japanese optical glass manufacturer OHARA (OHARA) disclosed the technology of using femtosecond pulsed laser to form diffractive optical components inside glass. According to reports, it can also be combined with the original optical lens by adding filters and lens functions, etc., to achieve functional compounding. Ohara actually demonstrated the technology in the exhibition area, including forming a diffraction grating inside the ultra-thin glass plate and spectrally separating the white light, forming a cylindrical lens (Cylindrical Lens) and condensing the light longitudinally, and using a femtosecond pulsed laser inside. The central part of the light is formed, and the inside of the glass emits red light when irradiated with ultraviolet rays.　　According to Ohara, since this technology can form parts with different refractive indices inside the glass, in addition to diffraction gratings, it is also possible to form an optical waveguide that can bend light by 90 degrees with a radius of curvature of 1 mm.

China Glass Network (www.glass.cn) News Editorial Department