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 ...

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 ...

As a species, we have long relied on optical imaging to explore nature. With our eyes, we monitor our interactions with the outside world and, from images formed on our retina, interpret the ...

Optical instruments are how we see the world, from corrective eyewear to medical endoscopes to cell phone cameras to orbiting telescopes. This course extends what you have learned about first-order, ...

Researchers report a new imaging system that cancels the chromatic optical aberrations present in a specific person's eye, allowing for a more accurate assessment of vision and eye health. By taking ...

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 ...

(Nanowerk News) X-ray microscopes are commonly used in combination with full-field imaging techniques in spectromicroscopy applications, where they allow the chemical structures of materials to be ...

En photographie, microscopie optique et en astronomie, l'aberration chromatique est réduite de différentes manières : Après la prise de vue, il est possible de réduire ce type d'aberration avec ...

En optique géométrique, l'aberration chromatique désigne une aberration optique qui produit une image floue et aux contours irisés. Elle résulte de la décomposition de la lumière blanche en plusieurs ...