Advances in OptoElectronics / 2011 / Article / Fig 1

Review Article

From Spheric to Aspheric Solid Polymer Lenses: A Review

Figure 1

Schematic diagram of the self-assembly mechanism of the lens: (a) fixed focal length and (b) variable focal length methods. Both types of design employ hydrophilic/hydrophobic interface characteristics to form areas with different surface tension. When lens material is applied, the material will tend to remain in hydrophilic zones with high surface free energy. The goal of the variable focal length process is to resolve the problem of excessively small numerical aperture (NA) that occurs when the conventional self-alignment method is employed.

We are committed to sharing findings related to COVID-19 as quickly as possible. We will be providing unlimited waivers of publication charges for accepted research articles as well as case reports and case series related to COVID-19. Review articles are excluded from this waiver policy. Sign up here as a reviewer to help fast-track new submissions.