We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Emerging keratoconus: The map on top shows the ...

Please provide your email address to receive an email when new articles are posted on . Contact lens models currently on the market or in development use a variety of approaches to reduce higher-order ...

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Figure 1. Shown here is the same degree of pincushion (a positive geometric distortion) for a 4:3 aspect ratio image and a 16:9 aspect ratio image. The percentage of distortion is visibly greater in ...

Light travels at different speeds based on the medium it passes through. For example, in a vacuum, it travels at 3.0 × 10^8 m/s in a straight line. But when directed towards glass, air, diamond, water ...

A new type of flat, ultrathin lens designed to be free of chromatic aberrations has been developed by researchers in the US. The device has a variety of potential applications, from ultralight imaging ...

The history of optics dates back more than 2000 years, as the legend “Archimedes, an ancient Greek scientist, has collected sunlight with a concave mirror and burned an enemy ship”. It is reported ...

One of the oldest problems in optics has been solved. Rafael Gonzalez from Mexico's Tecnologico de Monterrey has come up with an almost comically dense equation that can be used to almost completely ...

Optical microscopes are indispensable research tools in fields such as life sciences, medical science, and materials science. The objective lens is the core component of the microscope, determining ...

Not an aberration: schematic drawing of the metalens (left), which is made of tiny titanium waveguides. The drawing on the right is of a single waveguide. (Courtesy Boubacar Kanté) A new type of ...

Figure 1. The two chromatic aberrations (in exaggerated form for visibility) for selected RGB wavelengths. Click here to see an enlarged diagram. In the last paper of this article series, optical ...