Making a traditional glass lens requires a lot of experience ... is not perhaps the most efficient lens in terms of light focused per unit area of lens. From dredging up our highschool physics ...

Conventional curved lenses, which direct light by refraction in glass or plastic, are often bulky and heavy, offering only ...

Your camera lens may eventually need cleaning or to be stored if you're not using it for prolonged periods, but if you do so ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on ...

That’s because, as lenses become wider to catch more light, they also become bulkier. Between the costs of all that glass and the challenges of holding and transporting the weight, telescopes ...