or lenses that are flat on one side. Biconvex lenses can be constructed by gluing two planoconvex lenses back to back, which is done with an acrylic glue, in this case Acrifix adhesive.

Similar to plano-convex lenses, a bi-convex lens has a positive focal length and focuses parallel rays of light to a spot. Because the front and back surface of the lens are spherically convex and ...

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.

The best lenses for astrophotography enable you to capture the stars at the highest quality possible. Our roundup includes models for all leading camera brands. You'll want to own one of the best ...

Opinions expressed by Forbes Contributors are their own. Greg Engle is a Florida based reporter who covers NASCAR. Once upon a time, 48 months ago, a little LLC with just $500 in the bank imagined ...

The best iPhone lenses are a sure fire way to take your iPhone photography up a level. Sure, the iPhone 15 Pro has a 48MP sensor, which sounds great on paper, right? Well, ask any professional ...

Buying contact lenses online comes with a few key benefits that you don’t get from in-person shopping: It’s more convenient and faster, and the contacts are typically cheaper than buying at ...

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 ...

Ramy Youssef is no stranger to awards, having been nominated for Lead Actor in a Comedy as well as Directing for his Hulu series Ramy ,for which he also won a Golden Globe. This year he goes ...

Whether you’re looking for a specific image or trying to find information about a photo you’ve found, here’s the information ...

Nasha is a Managing Editor for CNET, overseeing our sleep and wellness verticals. She is a nutrition, mental health, fitness and sleep science enthusiast. Her passion for mindful and holistic ...