and are more efficient than conventional optical lenses. Augustin-Jean Fresnel — an early 19th century pioneer in the field of wave optics — is credited with the invention and application of grooved ...

but without a decent lens to focus light onto it, your images won’t look better. So, while today’s iPhones have more advanced cameras and better lenses than ever, they’re still hampered to ...

Gradient index lenses are optical lenses — often planar — which are used in specialized applications. Gradient index (or GRIN) optics encompasses optical effects produced by gradual variation of the ...

While transition lenses can help keep costs down by limiting your eyewear to one set of frames, it's also worth noting the ...

Best overall Best overall This is a great choice if you need a fast-acting lens warmer with some seriously good tech packed inside. Read more below Best for shorter lenses ...

Every AVR microcontroller, from the ATtiny in your thermostat to the ATMega in your Arduino, stores its configuration in a series of fuse bits. These fuse bits control settings such as the ...

While the object is being projected, another process would work with the light entering the lens to “focus” on that object. We already have contact lenses that contain more than one ...

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 ...

When it comes to correcting vision, the debate between contact lenses and glasses is ongoing ... However, advancements in lens technology, like silicone hydrogel contacts, allow more oxygen ...

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 ...

Rifle scope designs follow trends in the rifles that they’ll be paired with. The 3-9×42 scope, one of the best all-around hunting optics mounted on generations of bolt-action rifles, held sway until ...

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 ...