aspherical lens वाक्य

Many EF lenses include such features as Canon's ultrasonic motor ( USM ) drive, an image stabilization system ( IS ), diffractive optics ( DO ) and, particularly for L-series lenses, fluorite and aspherical lens elements.
The range of the products produced at Nikon Thailand include plastic molding, optical parts, painting, printing, metal processing, plating, spherical lens process, aspherical lens process, prism process, electrical and electronic mounting process, silent wave motor and autofocus unit production.