Example image of eyePlorer eyePlorer map for 'Doublet (lens)': Lens (optics) Optics Simple lens Dispersion (optics) Refractive index Crown glass (optics) Flint glass Trilobite Achromatic lens Chromatic aberration Optical aberration Spherical aberration Apochromat Adhesive Epoxy Canada balsam George Bass (optician) Non-achromatic objective Petzval lens Close-up filter Double-Gauss lens Albert Bouwers Maksutov telescope John Dollond Eyepiece Doublet Rodenstock GmbH
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