Making a traditional glass lens requires a lot of experience, skill, and patience grinding a piece of glass to the required shape, and is not for the casual experimenter. Making a glass Fresnel ...

An optical lens is a transparent optical component used to converge or diverge light emitted from a peripheral object. The transmitted light rays then form a real or virtual image of the object.

Our lens reviews offer detailed information on sharpness, distortion, bokeh, and all the other important factors that go into making a lens great. Our reviews give you all the information you need ...

Looking to get your contact lenses without leaving your house? These are the best places to buy contacts while saving time and money. Nasha is a Managing Editor for CNET, overseeing our sleep and ...

Meniscus lenses are optical lenses that produce a smaller focal point and fewer aberrations than a standard plano-convex lens. Meniscus lenses have one convex and one concave surface with each surface ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

Here's where Google Lens comes into play. It is a Google search engine behind your phone camera. It recognizes any object your device captures in real time, such as QR codes, garments, plants ...

Owning one of the best lens heaters is an absolute must if you're shooting in cold conditions to prevent your glass from fogging up. Owning one of the best lens heaters is a must if you're a ...

Images, and the devices that capture them, are my focus. I've covered cameras at PCMag for the past 13 years, which has given me a front row seat for the DSLR to mirrorless transition, the ...

Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object ...

SINGAPORE – Secondary 1 student Michaela Wang, 13, started wearing contact lenses three years ago, when she was in Primary 4. With the onset of myopia, she began using spectacles at the age of ...