Fast design method of smooth freeform lens with an arbitrary aperture for collimated beam shaping.
Appl Opt
; 58(10): 2512-2521, 2019 Apr 01.
Article
en En
| MEDLINE
| ID: mdl-31045046
A method is presented for the fast design of a smooth freeform lens to tailor a collimated light beam with an arbitrary contour. This method begins by calculating an initial surface based on a simplified ray mapping. Then the surface is fitted by a system of Zernike polynomials, whose weights are treated as the optimization variables for further optimization. In the optimization, the objective function is analytically calculated using a partial differential-equation-based approach. To validate the effectiveness of the proposed method, a freeform lens is designed for a collimated Gaussian beam with a spline contour to form a uniform illumination distribution with another spline contour, which takes only 26 s. A freeform lens is also fabricated and experimented, and its practical performance approaches the design.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Appl Opt
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Estados Unidos