A flat lens is a lens whose flat shape allows it to provide distortion-free imaging, potentially with arbitrarily-large apertures.[1] The term is also used to refer to other lenses that provide a negative index of refraction.[2] Flat lenses require a refractive index close to −1 over a broad angular range.[3][4] In recent years, flat lenses based on metasurfaces were also demonstrated.[5]
A flatlens is a lens whose flat shape allows it to provide distortion-free imaging, potentially with arbitrarily-large apertures. The term is also used...
lens), or planar (flat). The line joining the centres of the spheres making up the lens surfaces is called the axis of the lens. Typically the lens axis...
lens is concentrated in a small area in the center. In appearance, such a lens is often described as resembling a fried egg: a hemisphere atop a flat...
A pancake lens is a colloquial term for a flat, thin camera lens assembly (short barrel). The majority are prime lenses of a normal or slightly wider...
conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. Because of its...
or super lens, is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is a feature of conventional lenses and microscopes...
lens or asphere (often labeled ASPH on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder. In photography, a lens assembly...
metamaterials' negative refractive index focuses electromagnetic radiation by a flatlens versus being dispersed. The earliest research in metamaterial antennas...
Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over...
amount of strategic material of any design. Lenses using alternate design techniques and producing flat "plane wave" outputs are used for high transient...
Google Lens is an image recognition technology developed by Google, designed to bring up relevant information related to objects it identifies using visual...
array of lens designs intended for photography. The problems of photographic lens design, creating a lens for a task that would cover a large, flat image...
The lens board itself is usually flat, square, and made of metal (most commonly aluminum), wood, or plastic. The lens board will have a hole of various...
belongs to the stratocumulus cloud type, its appearance is that of a flatlens or almond. It forms as a result of atmospheric waves caused by wind passing...
ultrathin planar lens on a GO thin film has been realized recently using the DLW method. The distinct advantage of the GO flatlens is that phase modulation...
onto a flat plate. Bond noted the new lens could be used to record cloud cover or lightning strikes at a given location. Bond's hemispheric lens also reduced...
radii of curvature of the lens surfaces. Lenses whose thickness is not negligible are sometimes called thick lenses. The thin lens approximation ignores optical...
shortcoming in the non-anamorphic spherical (a.k.a. "flat") widescreen format. With a non-anamorphic lens, the picture is recorded onto the film negative such...
A gravitational lens is matter, such as a cluster of galaxies or a point particle, that bends light from a distant source as it travels toward an observer...
In photography and cinematography, a normal lens is a lens that reproduces a field of view that appears "natural" to a human observer. In contrast, depth...
glass lens (i.e. R1 > 0 with −R1 = R2 ) and a complementary-curved second flint glass lens (with R3 = R2 ). The back of the flint glass lens is flat ( R4...
A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors:...
refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric combinations are...
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