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aspheres White Papers
Easy to use Computer Generated Holograms for Complex Surface Metrology
There are many metrology methods on the market for testing aspheres. The method with one of the highest known accuracies is based on a Fizeau interferometer, in combination with a CGH. We describe a so called DFNL type CGH, having the CGH diffractive structures integrated into the Fizeau reference surface, which provides a solution for measuring complex shapes that is comparable to the traditional methods used for testing spheres. Compared to a standard CGH, the DFNL simplifies the hardware and...
Manufacturing Considerations for Tolerancing Aspheres
As aspheres become more prevalent in optical systems, it is important for lens designers to consider the various tolerances when designing an aspheric lens. The following is provided from the manufacturer's perspective on important tolerances to...
Aspherics Capabilities
Aspheres have become increasingly popular due to their ability to reduce or even eliminate spherical aberration, to create a more compact optical system. Hyperion Optics has accumulated extensive fabrication experience in aspherical surfaces. This...
Measuring Aspheres in a 3-D World
This white paper provides a basic practical guide on the benefits of 3-D measurements of aspheres as well as a couple of real-world examples of parts that we have manufactured. This white paper also goes into detail why one may prefer measuring...
Improving Focusing Quality of Spherical Lenses
Employing aspherical lenses to reduce aberrations to improve focusing qualities is a well-known concept. But the potpourri of aspherical surfaces offers way more possibilities, even the chance for flexible beam shaping setups. Axicons are conical...
Noncircular in Perfection - Production Accompanying Measurement of an Asphere
Independent of the application, whether in satellite optics, video lenses or endoscopes - aspheres have already become indispensable in a wide range of highly versatile technical fields of application. Regardless of the system’s size, they all have...
Various Beam Shaping Applications Utilizing Axicons
Employing aspherical lenses to reduce aberrations to improve focusing qualities is a well-known concept. But the potpourri of aspherical surfaces offers way more possibilities, even the chance for flexible beam shaping setups. Axicons are conical...
Beam Expansion - Standard Concepts Re-interpreted
Everyday work in an optics laboratory would be unthinkable without beam expansion systems. They serve to optimally adjust the beam cross sections between the light sources (e.g. lasers) and the subsequent optical elements. Precise illumination of...
Asphere Metrology: Options for Measuring Aspheric Lenses
This paper will outline the numerous metrology options for aspheres at Optimax, including how they work, any requirements, and what is specified with each method in an effort to help reasonably tolerance aspheres. Effects on the fabrication and cost...
(9 results found)
May 2024
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