Process for designing a freeform Fresnel lens

Peter Goldstein

doi:10.1117/12.858400

25 August 2010 Process for designing a freeform Fresnel lens

Peter Goldstein

Proceedings Volume 7787, Novel Optical Systems Design and Optimization XIII; 778705 (2010) https://doi.org/10.1117/12.858400
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

This paper describes a process for designing a faceted freeform Fresnel lens. Where a traditional Fresnel lens uses a profile revolved around a central axis, a freeform Fresnel lens uses individual triangular or trapezoidal facets that comprise a freeform surface. This type of lens combines the capability of a freeform surface with the benefits of a Fresnel lens, in particular: thin profile, low cost, small size, and relatively simple geometry calculations. An algorithm is presented to design such a lens that generates an output intensity distribution without depending on symmetry in the light source, the lens aperture, or the output intensity distribution. Two example systems are presented, demonstrating how a freeform Fresnel lens can reshape a beam of light without relying on symmetry.

Citation Download Citation

Peter Goldstein "Process for designing a freeform Fresnel lens", Proc. SPIE 7787, Novel Optical Systems Design and Optimization XIII, 778705 (25 August 2010); https://doi.org/10.1117/12.858400

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available