Large-Area Optics

Vacuum Coating Equipment for Telescope Mirrors & Large Apertures

Are you look­ing for coat­ing so­lu­tions for large op­ti­cal sur­faces with ex­treme­ly high re­quire­ments for ap­pli­ca­tions such as as­tro­no­mi­cal re­flect­ing tele­scopes? Our mag­ne­tron sput­ter­ing tech­nol­o­gy provide the pre­ci­sion you need.

In tele­scope con­struc­tion, sin­gle mir­rors with a di­am­e­ter of more than 8 m are used. Be­fore coat­ing, these mir­ror op­tics are pol­ished to an ac­cu­ra­cy of 20 nm. The sub­se­quent de­po­si­tion of high­ly re­flect­ive alu­min­um, gold, or sil­ver lay­ers must not wors­en this de­vi­a­tion from the ide­al par­a­bol­ic or hy­per­bol­ic shape of the mir­ror. Therefore, the coating pro­cess must also achieve ac­curacy on the order of a nm.

We pro­vide special­ized, large-area coat­ing sys­tems designed pre­cisely for this pur­pose.