Changchun Sunday Optics Co., ltd, was founded in 2010, located in optical base Changchun city. With branches in Changchun, Jiangsu, Nanjing, Sunday Optics mainly produces spherical lens, aspheric lens, prisms, high precision window, filter, coating, laser lens, optical design and optical assembly. The minimum size of the lens can be 0.1mm, and the tolerance of prism’s 90-degree angle can be 2 ' '.