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  • Focusing Objective Theory (.pdf)
    such as Bestforms. Whether correc-. tion over larger apertures, several wavelengths or a. Achromatic Objectives. wider field is needed, it may be necessary to use multi-. An advantage of additional lens elements is the ability to. element lens objective. combine lenses of different materials and optical
  • Focusing Objective Theory
    such as Bestforms. Whether correc-. tion over larger apertures, several wavelengths or a. Achromatic Objectives. wider field is needed, it may be necessary to use multi-. An advantage of additional lens elements is the ability to. element lens objective. combine lenses of different materials and optical
  • Factors to Consider When Selecting a Stereo Microscope
    . It occurs because lenses have a different refractive index for different wavelengths of light (the dispersion of the lens). The refractive index decreases with increasing wavelength. The aim of a good optical design is to reduce or eliminate this effect completely. An achromatic lens or achromat is a lens
  • Adaptive wavefront correction in two-photon microscopy using coherence-gated wavefront sensing
    ), and ND2 (1.7D, 371144; Linos, Göttingen, Germany), near-infrared achromatic doublets L1 (focal length 5 cm, NT45–803; Edmund Optics), L2 (focal length 8 cm, 322393; Linos), L3 (focal length 7.5 cm, AC254–075-B; Thorlabs, Newton, NJ), L4 (focal length 15 cm, AC254–150-B; Thorlabs), L5 (focal length
  • Optical Dictionary
    and near infrared lasers). Achromatic lens: A usually two-element lens that is corrected for chromatic aberration to bring two specified or distinct wavelengths to a common focal point. Active medium: Collection of atoms capable of undergoing stimulated emission at a given wavelength. Afocal: Literally

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