What's it about?
This paper will highlights the similarities and differences between tolerancing, manufacturing and measuring spherical and aspheric surfaces. It will outline how Optimax communicates aspheric forms, the manufacturing challenges, what metrology options Optimax has for aspheres, and some example specifications for each specific metrology option. In addition, guidelines provided for the optical designer suggest where to loosen tolerances in order to achieve the best quality aspheric surfaces in the most time and cost effective manner.
Specifying an Aspheric Lens
Specifying an asphere begins with material selection and specification of diameter, thickness, cosmetics and clear aperture in the same way a spherical lens would be specified. The same style of tolerancing applies for these attributes as they would for a spherical lens...