1/20/2024 0 Comments F150 mirror reflector paintThese lenses are fabricated from N-BK7, which has an Abbe Number of 64.17 this value is an indicator of the dispersion. Where n is the index of refraction and R is the radius of curvature of the lens surface. The focal length of each lens can be calculated using a simplified thick lens equation: To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated. Plano-convex lenses can focus a collimated beam or collimate light from a point source. These lenses have a positive focal length and near-best-form shape for infinite and finite conjugate applications. N-BK7 is typically chosen whenever the additional benefits of UV fused silica (i.e., good transmission further into the UV and a lower coefficient of thermal expansion) are not necessary. These Plano-Convex Lenses are fabricated from RoHS-compliant N-BK7 glass and feature an antireflection coating for the 650 nm to 1050 nm range. Focal Lengths Available from 4 to 2500 mm.The LA1254-B, LA1258-B, and LA1259-B lenses have a clear aperture equal to 90% of the diameter.Limited by the Antireflection Coating Refer to the Damage Thresholds Tab for Details.This specification is also commonly referred to as surface fit. Much like surface flatness for flat optics, spherical surface power is a measure of the deviation between the surface of the curved optic and a calibrated reference gauge, typically for a 633 nm source, unless otherwise stated.Ø25 mm lenses have a design wavelength of 632.8 nm.
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