This is a tracking type solar lighting device made by Dongseo University and applied DIYPRO’s Fresnel Lens F = 63.
(동서대학교에서 다이프로의 F=63 프로넬 렌즈를 적용하여 개발된 추적식 태양광 장치입니다.)

Quick View DIYPRO’s lenses
http://diypro.co.kr/shop/item.php?it_id=1131780420
Best optical performance at IR
Qualified with global buyers
Hands-on experience with R&D
This is a tracking type solar lighting device made by Dongseo University and applied DIYPRO’s Fresnel Lens F = 63.
(동서대학교에서 다이프로의 F=63 프로넬 렌즈를 적용하여 개발된 추적식 태양광 장치입니다.)

Quick View DIYPRO’s lenses
http://diypro.co.kr/shop/item.php?it_id=1131780420