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Fresnel lens - Camera-wiki.org - The free camera encyclopedia
Fresnel Rings
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Fresnel lens - Wikipedia
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Fresnel lens - Wikipedia
![Lighthouse lamp with glass rings of Fresnel lens - Stock Photo [92959959] - PIXTA](https://en.pimg.jp/092/959/959/1/92959959.jpg "Lighthouse lamp with glass rings of Fresnel lens - Stock Photo [92959959] - PIXTA")
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