Universal method for determining the focal length of optical systems by moire deflectometry. | Semantic Scholar
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glossary of technical terms in photographic optics
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Focal points and focal planes, explained by RP; Gaussian optics
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15: Lens L1 and L2 is beam expander. L1 has a front focal length FFL of... | Download Scientific Diagram
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focal length (f) | Photonics Dictionary | Photonics Marketplace
Focal Length | MEETOPTICS Academy
Canon Knowledge Base - Definition of Back Focal Distance
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Focal points and focal planes, explained by RP; Gaussian optics
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Flange Focal Distance
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