Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations...

opposed to a fixed-focal-length (FFL) lens (prime lens). A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its...

A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors...

A camera lens, photographic lens or photographic objective is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera...

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent...

an aspherical lens. The asphere's more complex surface profile can reduce or eliminate spherical aberration and also reduce other optical aberrations such...

The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject...

covering optical effects produced by a gradient of the refractive index of a material. Such gradual variation can be used to produce lenses with flat...

optics, a doublet is a type of lens made up of two simple lenses paired together. Such an arrangement allows more optical surfaces, thicknesses, and formulations...

consequently are used in the fabrication of goods at this scale. Optical lens design Optical physics Optician Photonics "ESO Awards ELT Sensor Contract to...

wide-angle lens optical design. This allows for greater clearance for other optical or mechanical parts such as the mirror parts in a single-lens reflex camera...

significantly. The increased optical zoom range is aimed to improve macro photography. With a periscope lens, the zoom lenses are turned by 90° and are aligned...

range of manufacturing procedures and optical test configurations. The manufacture of a conventional spherical lens typically begins with the generation...

A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In...

Crown glass is a type of optical glass used in lenses and other optical components. It has relatively low refractive index (≈1.52) and low dispersion (with...

optical lens assists in the transport of light in an optical instrument. Systems of electrostatic lenses can be designed in the same way as optical lenses...

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:...

An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected...

century led to an array of lens designs intended for photography. The problems of photographic lens design, creating a lens for a task that would cover...

misleadingly called the optical centre of the lens. For a real lens the principal planes do not necessarily pass through the centre of the lens and can even be...

presents it as a direct optical view through the main camera lens rather than showing an image through a separate secondary lens. DSLRs largely replaced...

Gradient-index optics Hydrogen darkening Optical amplifier Optical fiber Optical lens design Photochromic lens Photosensitive glass Refraction Transparent...

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to build the first Petzval lens in 1840 on behalf of Petzval, whereupon it became known throughout Europe. Later, the optical instruments maker Carl Dietzler...

Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane. The earliest double Gauss lens, patented...

In practice, the lens will be an achromatic doublet. In modern optical telescopes and telescopic sights with a dual-focal plane design, the objective image...

crystal lenses dating back to the Archaic Greek period, showcasing exceptional optical quality. These discoveries suggest that the use of lenses for magnification...

A toric lens is a lens with different optical power and focal length in two orientations perpendicular to each other. One of the lens surfaces is shaped...

real image of the object. Objectives can be a single lens or mirror, or combinations of several optical elements. They are used in microscopes, binoculars...

A ball lens is an optical lens in the shape of a sphere. Formally, it is a bi-convex spherical lens with the same radius of curvature on both sides, and...