Prince Optical Works manufactures Newton Ring Lens. Prince Optical Works also manufactures optical components for scientific, educational instruments, astronomical audio visual, medical, ophthalmic instruments etc. The Newton Ring Lens is made with optical crown glass and tint glass having a one plain glass and one spherical plano convex lens of R.O.C. 100 and 50 cm. The Newton Ring Lens is available in size ranging from 50 cm to 75 cm.