enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Pinhole glasses - Wikipedia

   en.wikipedia.org/wiki/Pinhole_glasses

   Unlike conventional prescription glasses, pinhole glasses produce an image without the pincushion effect around the edges (which makes straight lines appear curved). While pinhole glasses are claimed to be useful for people who are both near- and far-sighted, they are not recommended [citation needed] for people with over 6 diopters of myopia.

3. Distortion (optics) - Wikipedia

   en.wikipedia.org/wiki/Distortion_(optics)

   In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image.It is a form of optical aberration that may be distinguished from other aberrations such as spherical aberration, coma, chromatic aberration, field curvature, and astigmatism in a sense that these impact the image sharpness without changing an ...

4. Optical aberration - Wikipedia

   en.wikipedia.org/wiki/Optical_aberration

   The reverse, in which the perimeter is magnified more than the center, is known as "pincushion distortion" (figure 3b). This effect is called lens distortion or image distortion, and there are algorithms to correct it. Systems free of distortion are called orthoscopic (orthos, right, skopein to look) or rectilinear (straight lines). Figure 4

5. Coma (optics) - Wikipedia

   en.wikipedia.org/wiki/Coma_(optics)

   Coma of a single lens. Each cone of light focuses on different planes along the optical axis. In optics (especially telescopes), the coma (/ ˈ k oʊ m ə /), or comatic aberration, in an optical system refers to aberration inherent to certain optical designs or due to imperfection in the lens or other components that results in off-axis point sources such as stars appearing distorted ...

6. Forgot to get solar eclipse glasses? Here's how to DIY a ...

   www.aol.com/forgot-solar-eclipse-glasses-heres...

   Looking at eclipse without proper glasses is dangerous. Luckily, there are DIY options for those who forgot to order a pair in time for April 8.

7. Glasses are 50% off at GlassesUSA during Black Friday ... - AOL

   www.aol.com/lifestyle/glasses-usa-black-friday...

   Get a new pair of glasses as low as $26 at GlassesUSA during Black Friday week. Shop high-end brands like Ray-Ban or more affordable brands—they're all on sale.