If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...

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 ...

Scientists have developed an impossibly thin telescope lens that addresses a key astronomical challenge in a new study funded ...

Diffractive lenses, such as Fresnel plates, offer a lightweight alternative but suffer from color distortion issues. These limitations have long hindered their adoption in astrophotography.

Phakic IOL technologies have undergone substantial improvements in recent years, with progressive upgrades in design and ...

It towers above the museum's displays of ship models and marine artifacts. This is the Fresnel lens, not one lens really, but numerous tiers of prisms. Lenses like this one turned simple flames ...

Fresnel lenses are all around us, but this vase puts the commonplace technology to work in an entirely new way. Borrowed From Old Lighthouses, A Method For Super-Powerful Solar Power With the help ...