Symmetric lens with extended depth of focus

TL;DR

This paper introduces a novel symmetric lens design with extended depth of focus, derived from a specific relationship between focal length and lens radius, applicable in advanced image focusing technologies.

Contribution

It presents a new lens surface profile design method based on instantaneous focal length versus radius data, enhancing focus extension capabilities.

Findings

Design method enables extended depth of focus.

Applicable to software-assisted image focusing.

Provides a new approach to lens surface profiling.

Abstract

The lens surface profile is derived based on the instantaneous focal length versus the lens radius data. The lens design based on instantaneous focal length versus the lens radius data has many useful applications in software assisted image focusing technology.