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How to use manufacturing statistics when tolerancing a lens systemLens design software analyzes optical tolerances by modeling a perturbed optical system to capture the effect of simultaneous changes in manufacturing and...Read More
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Considerations in Manufacturing Cemented AssembliesOne design strategy for an optical system is centering two or more lenses together to build a lens assembly. However, strain in excess may cause...Read More
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Optical Glass: Substitutes Versus EquivalentsSelecting the material from which a lens is made is a fundamental design consideration. In certain situations, a substitute or equivalent material may need...Read More
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Specifying And Measuring Spherical Surface Irregularity ©This paper will define surface irregularity for spherical surfaces, offer information on measurement methods for testing surface irregularities, and some...Read More
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Mechanical Attributes: Diameter, Center, and Edge Thickness Specification for Lens ManufactureMechanical attribute tolerances can be a major cost driver because of time and yield penalties added to the fabrication of a lens. Dimensions and their...Read More
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Specifying and Measuring Slope Error of Optical SurfaceThis paper will first detail where slope error originated from, what it represents, and the role it plays in the optical performance.Read More
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Role of Surface Roughness In Optical PerformanceThis paper examines the role surface roughness plays in optical system performance, discusses the components of a surface roughness specification, and...Read More