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Aspheric Lenses: Design Considerations

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This first of two articles will cover design and manufacturing options for aspheres; the second will include more detail on manufacturing and testing processes. These articles will provide the tools optics designers need to tailor their designs to the appropriate manufacturing process and to optimize the cost of component fabrication.

Jeremy Govier, Edmund Optics, Inc.

Aspheric surfaces are powerful tools that combine the optical corrections of multiple lenses into a single element (Figure 1) and affect performance in ways that spherical optics cannot. For example, aspheres can correct for the spherical aberration inherent in a traditional lens. In the past, aspheric lenses were extremely difficult to manufacture. Advances in manufacturing and testing techniques have reduced this difficulty significantly, but manufacturing can still be a challenge. While it’s easier now than ever to manufacture aspheres, there are some very costly design pitfalls to...Read full article

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