Changchun Sunday Optics Co., Ltd., founded in 2013 and located in Changchun City—China’s renowned optical base—is a precision optical components manufacturer providing integrated capabilities in optical glass processing, coating, optical assembly, and optical design. Sunday Optics specializes in the production of spherical lenses, aspheric lenses, cylindrical lenses, optical prisms, high-precision windows, optical filters, optical mirrors, coatings, and laser lenses. The minimum lens size can reach 0.3 mm, while prism 90-degree angle tolerance can be controlled within 2″. With a strong focus on high-precision optics, surface roughness can be guaranteed down to 0.1 nm, meeting the stringent requirements of advanced optical applications