Optical Filter Mechanical Dimensions - Clear Aperture, Wedge, and Parallelism
Tolerancing Optical Systems
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Achromatic Positive Doublet Mounted Lens with Clear Aperture 38mm - China Precision Polished Achromatic Lenses, Precision Molded Achromatic Lenses | Made-in-China.com
Solar Spectrum Observer Series 1,5 (25mm clear aperture)
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Switchable telescopic contact lens
Air-Spaced Doublets, 532 nm and 1064 nm
How to Pick a Lens for Milky Way Photography – Lonely Speck
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A-58N Variable Focus Liquid Lens | Large Clear Aperture Liquid Lens | Corning
4.7mm Diameter Effective Focal Length 6.2mm Effective Clear Aperture 3.7mm Optical Glass Aspheric Lens Material H-k9l - Lenses - AliExpress
Lens Calculator - PowerPhotonic
