Optics: Aspherical Lens

Aspherical lenses are used in a range of applications, including barcode scanners, laser diode collimation, and integration for OEM and research and development, to eliminate spherical aberration. By replacing lenses in an optical assembly composed of multiple lenses with aspherical lenses, it is possible to reduce the number of required lenses and contribute to miniaturization. Unlike conventional lenses that adopt a spherical shape on the first surface, aspherical lenses employ a more complex surface shape where the curvature gradually changes from the center of the lens to the edge. Reducing the total number of lenses not only contributes to a decrease in the size and weight of the system but also simplifies the assembly process. Adopting aspherical lenses in applications such as focusing the output from laser diodes not only reduces total costs but also makes it possible to exceed the performance of assemblies designed using conventional spherical lenses.

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