Design, tolerancing, and fabrication of a freeform lightguide based on the flow-line method

S. Sorgato; L. Smeesters; M. Vervaeke; K. Rochlitz; D. Rosseel; J. Verbaenen; H. Thienpont; T. Geernaert; J. Van Erps

doi:10.1117/12.2634433

3 October 2022 Design, tolerancing, and fabrication of a freeform lightguide based on the flow-line method

S. Sorgato, L. Smeesters, M. Vervaeke, K. Rochlitz, D. Rosseel, J. Verbaenen, H. Thienpont, T. Geernaert, J. Van Erps

Proceedings Volume 12220, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVIII; 122200C (2022) https://doi.org/10.1117/12.2634433
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

We present a miniature freeform lightguide for sensing applications, designed according to the principles of the flow-line method from Nonimaging Optics. The optic is obtained by combining two 2D flow-line concentrators in a curved monolithic piece, achieving 45° half-acceptance angle and 40° beam steering in a very compact volume (about 1.3 x 2.0 x 20 mm³). We show how the initial design has been adjusted after a thorough tolerance analysis and describe its fabrication through plastic injection molding. The design of the mold involves a non-standard 3D-puzzle approach, which allows uniform high optical quality and minimizes the fillet radius on the optic.

Conference Presentation

Citation Download Citation

S. Sorgato, L. Smeesters, M. Vervaeke, K. Rochlitz, D. Rosseel, J. Verbaenen, H. Thienpont, T. Geernaert, and J. Van Erps "Design, tolerancing, and fabrication of a freeform lightguide based on the flow-line method", Proc. SPIE 12220, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVIII, 122200C (3 October 2022); https://doi.org/10.1117/12.2634433

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