Manufacturing and analyzing of cost-efficient fresnel lenses using stereolithography

Abhijeet Shrotri; Micha Beyer; Oliver Stübbe

doi:10.1117/12.2555367

30 March 2020 Manufacturing and analyzing of cost-efficient fresnel lenses using stereolithography

Abhijeet Shrotri, Micha Beyer, Oliver Stübbe

Proceedings Volume 11349, 3D Printed Optics and Additive Photonic Manufacturing II; 113490N (2020) https://doi.org/10.1117/12.2555367
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

Additive manufacturing (AM) has provided a new aspect of manufacturing 3D objects in the past few decades. The use of AM for the production of 3D objects has accelerated the rate of designing and manufacturing. These AM techniques can be utilized in manufacturing optical, mechanical and electrical prototypes. The manufacturing of optical prototypes involves the production of spherical lens prototypes and special forms of aspheric and concentrator lenses such as fresnel lens prototypes. Different designed fresnel lens prototypes are manufactured using a transparent clear resin material and stereolithography apparatus (SLA) process. It uses a photochemical process to develop 3D structures. These manufactured fresnel lens prototypes are difficult to postprocess using hand polishing, hence they are post-processed using lacquering to get more transparency. These prototypes are tested using a laser source to evaluate the attenuation of light and focal length of manufactured fresnel lens prototypes. Similar tests using a commercially available convex lens of the same focal length are carried out. The results of these tests show that the difference between the mean of attenuation of light beam when passed through a fresnel lens prototype and the convex lens is 1 dB. The focal length of manufactured fresnel lens prototypes has a 10 mm deviation. Therefore, it is feasible to manufacture complexity and cost reduced fresnel lens prototypes using SLA and lacquering.

Conference Presentation

Citation Download Citation

Abhijeet Shrotri, Micha Beyer, and Oliver Stübbe "Manufacturing and analyzing of cost-efficient fresnel lenses using stereolithography", Proc. SPIE 11349, 3D Printed Optics and Additive Photonic Manufacturing II, 113490N (30 March 2020); https://doi.org/10.1117/12.2555367

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