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Related Experiment Video

Updated: Jun 16, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

Planar micro-optic solar concentrator.

Jason H Karp¹, Eric J Tremblay, Joseph E Ford

¹Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093-0407, USA. jkarp@ucsd.edu

|February 23, 2010

Summary

This summary is machine-generated.

A novel solar concentrator design uses a 2D lens array to couple sunlight into a planar waveguide. This thin, flat system achieves high optical efficiency for cost-effective solar energy concentration.

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Last Updated: Jun 16, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

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Published on: October 27, 2017

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

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Published on: April 11, 2025

Area of Science:

Optics
Renewable Energy
Materials Science

Background:

Traditional solar concentrators often have bulky profiles.
Low-cost fabrication methods are crucial for widespread solar energy adoption.

Purpose of the Study:

To introduce a new, thin-profile solar concentration system.
To analyze design trade-offs and optimize optical efficiency.
To demonstrate experimental feasibility using self-aligned reflective coupling.

Main Methods:

Utilizing a two-dimensional lens array for sunlight collection.
Employing localized features at lens foci to couple light into a shared planar waveguide.
Fabricating reflective coupling features using molded SU-8 material.

Main Results:

Optimized designs achieve 90% optical efficiency at 73x concentration.
Achieved 82% optical efficiency at 300x concentration.
Demonstrated preliminary experimental results with self-aligned reflective coupling.

Conclusions:

The proposed planar waveguide solar concentrator offers a thin, flat profile suitable for roll manufacturing.
The design enables high optical efficiency at moderate to high concentration levels.
Experimental validation confirms the potential of self-aligned reflective coupling for efficient light transfer.