File:Light collimation fresnel lens.gif: Difference between revisions
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Latest revision as of 13:54, 31 October 2017
Light collimation with a Fresnel lens. (Image: edmundoptics.com)
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current | 13:54, 31 October 2017 | ![]() | 549 × 200 (6 KB) | Paulo Pacheco (talk | contribs) |
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