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Lens with a thickness that is negligible
In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to
Thin_lens
Optical device which transmits and refracts light
the lens is called a positive or converging lens. For a thin lens in air, the distance from the lens to the spot is the focal length of the lens, which
Lens
Measure of how strongly an optical system converges or diverges light
light; it has units of length, and for an idealized thin lens is equal to the distance between the lens and its focal points. A positive focal length indicates
Focal_length
Ray tracing technique
{x_{1}+d}}\theta _{1}\end{aligned}}} Another simple example is that of a thin lens. Its RTM is given by: L = [ 1 0 − 1 f 1 ] , {\displaystyle \mathbf {L}
Ray_transfer_matrix_analysis
Lenses placed on the eye's surface
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
Contact_lens
Process of enlarging the apparent size of something
25 cm from the eye (called the near point). The linear magnification of a thin lens is M = f f − d o = − f x o {\displaystyle M={f \over f-d_{\mathrm {o}
Magnification
Concept in physics
In the limit of a "thin lens", where the distances between the source, lens, and observer are much larger than the size of the lens (this is almost always
Gravitational lensing formalism
Gravitational_lensing_formalism
Analog graphical calculator
example, it is the parallel-resistance formula in electronics, and the thin-lens equation in optics. In the example, the red line demonstrates that parallel
Nomogram
Deviation from perfect paraxial optical behavior
there is refraction at a collective spherical surface, or through a thin positive lens, O′2 will lie in front of O′1 so long as the angle u2 is greater than
Optical_aberration
Layer of fresh groundwater
the hydraulic head, resulting in a thin lens. An algebraic model for estimating the thickness of a freshwater lens was developed using groundwater simulations
Lens_(hydrology)
Optical imaging rule
application of the Gaussian thin-lens formula, as shown in the section Proof of the Scheimpflug principle. When the lens and image planes are not parallel
Scheimpflug_principle
Unit of measurement of optical power
add. Thus, a thin 2.0-dioptre lens placed close to a thin 0.5-dioptre lens yields almost the same focal length as a single 2.5-dioptre lens. The idea of
Dioptre
Equation of the form 1/a + 1/b = 1/c
an object, S1, and from the lens to its image, S2, are related by the thin lens formula: 1 S 1 + 1 S 2 = 1 f . {\displaystyle {\frac {1}{S_{1}}}+{\frac
Optic_equation
Optical lens that transmits images
sensor at 2f beyond that lens, that lens will relay the first image to the second image with 1:1 magnification (see thin lens formula showing that with
Relay_lens
Characteristic of an optical system
radius f centered about the focal point". In this sense, the traditional thin-lens definition and illustration of f-number is misleading, and defining it
Numerical_aperture
Term for a thin, flat camera lens
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
Pancake_lens
Eye structure
The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority
Lens_(vertebrate_anatomy)
Optical device used with a camera to create images
A camera lens, photographic lens or photographic objective is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera
Camera_lens
Topics referred to by the same term
chemical compounds Thin layers (oceanography), congregations of phytoplankton and zooplankton in the water column Thin lens, lens with a thickness that
Thin
Concept in optics
points that span conjugate planes are called conjugate points. For a thin lens or a curved mirror, 1 u + 1 v = 1 f , {\displaystyle {1 \over u}+{1 \over
Conjugate_focal_plane
Photographic optic
front group is further back relative to the lens node/focal plane than would be the case for a simple thin lens of the same focal length. Typically this
Large_format_lens
Gravitational deflection of light
subtle than cluster or galaxy-galaxy lensing. The thin lens approximation usually used in cluster and galaxy lensing does not always work in this regime
Weak_gravitational_lensing
Monochrome light beam whose amplitude envelope is a Gaussian function
a thin lens, the outgoing beam is also a (different) gaussian beam, provided that the beam travels along the cylindrical symmetry axis of the lens, and
Gaussian_beam
Brand of antacid
Folds, D.; Belcher, E. (1 October 1993). "3-D acoustic imaging with a thin lens". Proceedings of OCEANS '93. pp. III444–III449 vol.3. doi:10.1109/OCEANS
Maalox
Optical aberration
based on ray optics, which holds for thin lenses only, is the Coddington notation. In the following, n is the lens's refractive index, o is the object distance
Spherical_aberration
Failure of a lens to focus all colors on the same point
consisting of two thin lenses in contact, the Abbe number of the lens materials is used to calculate the correct focal length of the lenses to ensure correction
Chromatic_aberration
Inverse of the average of the inverses of a set of numbers
subject u and object v from the lens. Two thin lenses of focal length f1 and f2 in series is equivalent to two thin lenses of focal length fhm, their harmonic
Harmonic_mean
Optical inhomogeneities in transparent media
a converging lens (also called a schlieren lens). This image is located at the conjugate distance to the lens according to the thin lens equation: 1 f
Schlieren
Optical device for concentrating light
its similarity to a Fresnel lens, in which many small, thin lens fragments are combined to simulate a much thicker simple lens. These mirrors are capable
Compact linear Fresnel reflector
Compact_linear_Fresnel_reflector
easily be deduced from two simples rules for the thin positive lens: the rays through the center of the lens remain unchanged, the rays through the front
Conoscopy
Property in optics
length of a lens is determined by its refractive index n and the radii of curvature R1 and R2 of its surfaces. The power of a thin lens in air is given
Refractive_index
Optical device
the tangent plane). A toric lens combines the effect of a cylindrical lens with that of an ordinary spherical lens. If a thin cylindrical rod is placed
Cylindrical_lens
Design rule for optical systems
condition. The Abbe sine condition can be derived by Fermat's principle. A thin lens satisfies tan α o tan α i = tan β o tan β i = n i n o | M | {\displaystyle
Abbe_sine_condition
Species of plant with edible seeds
The lentil (Vicia lens or Lens culinaris) is an annual legume grown for its lens-shaped edible seeds or pulses, also called lentils. It is about 40 cm
Lentil
Six points which determine imaging properties of an optical system
vertex, and negative to the left. For a thin lens in air, the principal planes both lie at the location of the lens. The point where they cross the optical
Cardinal_point_(optics)
The lenses were thin, yet reports of injury were rare. In 1938 perspex (polymethylmethacrylate, or PMMA) began to replace glass in contact lens manufacture
List of soft contact lens materials
List_of_soft_contact_lens_materials
Measurement in visual perception
the patient's actual near point, at distance NP. From the thin lens formula, the required lens will have optical power P given by P ≈ 1 D − 1 N P . {\displaystyle
Near_point
Branch of physics that studies light
equation. Ray tracing can be used to show how images are formed by a lens. For a thin lens in air, the location of the image is given by the simple equation
Optics
Compact composite lens
A Fresnel lens (/ˈfreɪnɛl, -nəl/ FRAY-nel, -nəl; /ˈfrɛnɛl, -əl/ FREN-el, -əl; or /freɪˈnɛl/ fray-NEL) is a type of composite compact lens which reduces
Fresnel_lens
Imaging and diffraction using electrons that pass through samples
passing through the coils. Equally important to the lenses are the apertures. These are circular holes in thin strips of heavy metal. Some are fixed in size
Transmission electron microscopy
Transmission_electron_microscopy
Degree to which an optical system converges or diverges light
more thin lenses close together, the optical power of the combined lenses is approximately equal to the sum of the optical powers of each lens: P = P1
Optical_power
Optical coating that reduces reflection
(2001). Thin Film Optical Filters (3rd ed.). CRC. p. 4. ISBN 978-0-7503-0688-1. British Patent 29561, 31 December 1904 "History of Camera Lenses from Carl
Anti-reflective_coating
Distortion of an object in photography
{o} }} , and the focal length f {\displaystyle f} are related by the thin-lens equation: 1 s i + 1 s o = 1 f . {\displaystyle {\frac {1}{s_{\mathrm {i}
Perspective_distortion
Distance from the vertex of a lens or mirror to its center of curvature
Institute of Technology. p. 4. Retrieved 8 August 2017. Nave, Carl Rod. "The Thin Lens Equation". HyperPhysics. Georgia State University. Retrieved 8 August
Radius_of_curvature_(optics)
Mirror with a curved reflecting surface
The derivations of the ray matrices of a convex spherical mirror and a thin lens are very similar. Alhazen's problem (reflection from a spherical mirror)
Curved_mirror
a general imaging system with object distance z0, focal length of the thin lens f and an imaging distance z1. The effect of the propagation in freespace
Focus recovery based on the linear canonical transform
Focus_recovery_based_on_the_linear_canonical_transform
Farthest distance an eye can see
corrective lens can be used to correct myopia by imaging an object at infinity onto a virtual image at the patient's far point. According to the thin lens formula
Far_point
Type of lens to improve visual perception
because the thin wire contrasts against the thick lens, to make its thickness much more obvious to others. The index can improve the lens thinness, but at
Corrective_lens
Body of ore or rock that is thick in the middle and thin at the edges
a lens or lentil is a body of ore or rock that is thick in the middle and thin at the edges, resembling a convex lens in cross-section. To thin out
Lens_(geology)
Large contact lens resting on the sclera, creating a tear-filled vault over the cornea
A scleral lens, also known as a scleral contact lens, is a large contact lens that rests on the sclera and creates a tear-filled vault over the cornea
Scleral_lens
Optical image of the physical aperture stop
In an optical system (generally a lens), the entrance pupil is the optical image of the physical aperture, as 'seen' through the optical elements in front
Entrance_pupil
State of vision
lens does not occur in emmetropia, and the lens is about 3.6 mm thick at the center; in accommodation, it thickens to about 4.5 mm. A relatively thin
Emmetropia
Model of optics describing light as geometric rays
as a lens. Thin lenses produce focal points on either side that can be modeled using the lensmaker's equation. In general, two types of lenses exist:
Geometrical_optics
Technique in geometric optics
geometric length L {\displaystyle L} , with refraction generated by a thin lens of focal length f {\displaystyle f} is represented by the matrix M = (
Gaussian_optics
Integral transform
to lens, except focal length is replaced by the radius R of the dish. A spherical mirror with radius curvature of R is equivalent to a thin lens with
Linear canonical transformation
Linear_canonical_transformation
Calculation technique
effects Thin film interference (optical coating, soap bubble) can be used to calculate the reflectivity of a surface. For the application of lens design
Ray_tracing_(physics)
Distance between the nearest and the furthest objects that are in focus in an image
Stanford Computer Graphics Laboratory. Hecht, Eugene (2017). "5.2.3 Thin Lenses". Optics (5th ed.). Pearson. p. 172. ISBN 978-1-292-09693-3. Nasse, H
Depth_of_field
Blurry region in optics
simple paraxial thin lens or a symmetrical lens, in which the entrance pupil and exit pupil are both of diameter A. More complex lens designs with a non-unity
Circle_of_confusion
Material dispersion property
the Lensmaker's equation, we obtain the thin lens equation by neglecting the small term that accounts for lens thickness d {\displaystyle d} : P 0 = 1
Abbe_number
Chinese precision manufacturing company
Lens Technology Co., Ltd. (Chinese: 蓝思科技股份有限公司) is a Chinese precision manufacturing company specializing in advanced glass, ceramic, metal, and sapphire
Lens_Technology
German optics company
Aldis for Dallmeyer of London, Rudolph designed a new asymmetrical lens with four thin elements, the Unar Series Ib, with apertures up to f/4.5. Due to
Zeiss_(company)
Photographic lens
lens for the Pentax K-mount. At only 0.6 inches (15 mm) long, it was the smallest lens made by Pentax until the 40mm XS lens was introduced. The lens
Pentax_DA_40mm_lens
Medical condition involving the eye
progression. If vision cannot be improved with contact lenses and the cornea becomes too thin or scarred, a corneal transplant may be necessary. Keratoconus
Keratoconus
Distance beyond which all objects can be brought into an acceptable focus
second definition, if H is measured from a thin lens, or from the front principal plane of a complex lens; it is also exact for the first definition if
Hyperfocal_distance
English astronomer, mathematician and physicist (1656–1742)
Halley is noted as the first to publish the algebraic version of the thin lens equation. Ronan, Colin A. (1969). Edmond Halley, Genius in Eclipse. Garden
Edmond_Halley
Chinese-American optical engineer
extended the thin lens equation to accurately describe real laser beams. He discovered an error in using Newton's rings to calculate lens surface radius
Haiyin_Sun
Producing images of 3D scenes
simulated. The thin lens approximation allows combining perspective projection with depth of field (and bokeh) emulation. Camera lens simulations can
Rendering_(computer_graphics)
Standard lens mount on the Canon EOS family
The EF lens mount is the standard lens mount on Canon’s EOS family of cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled
Canon_EF_lens_mount
Optical phenomenon
Thin-film interference occurs when light waves reflected by the upper and lower boundaries of a thin film interfere with one another, increasing reflection
Thin-film_interference
Technology for creating optical illusions
These are printed on the back of a piece of plastic, with a series of thin lenses molded into the opposite side. Alternatively, the images can be printed
Lenticular_printing
Lens implanted in eye in addition to the natural lens
intraocular lens (PIOL) is an intraocular lens that is implanted surgically into the eye to correct refractive errors without removing the natural lens (also
Phakic_intraocular_lens
Mathematical function in general imaging
{\displaystyle \alpha _{f}\approx {\frac {\Delta b\cdot R}{b^{2}}}} From the thin-lens formula it can be shown that Δ b / b 2 ≈ Δ f / f 2 {\displaystyle \Delta
Contrast_transfer_function
Computer scientist working primarily in the fields of computational imaging
lens aberrations". Vision Systems Design. "Scientists develop a camera that's 'the size of a grain of salt'!". BBC Newsround. 1 December 2021. "Thin On-Sensor
Felix_Heide
The angular aperture a {\displaystyle a} of a lens is the angular size of the lens aperture as seen from the focal point: a = 2 arctan ( D / 2 f ) =
Angular_aperture
Material which alters light reflection or transmission on optics
An optical coating is one or more thin layers of material deposited on an optical component such as a lens, prism or mirror, which alters the way in which
Optical_coating
Thin layer of material
example for the progress in optical systems by thin-film technology is represented by the only a few mm wide lens in smart phone cameras. Other examples are
Thin_film
Type of camera
A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole)—effectively a light-proof box with a small hole in
Pinhole_camera
Hard, fine-grained sedimentary rock composed of cryptocrystalline silica
and iron oxides. Nonmarine cherts may form in saline alkaline lakes as thin lenses or nodules showing sedimentary structures suggestive of evaporite origin
Chert
Type of second-generation solar cell
Thin-film solar cells are a type of solar cell made by depositing thin layers of photovoltaic material onto a glass, plastic or metal substrate. Thin-film
Thin-film_solar_cell
Topics referred to by the same term
the middle and thin at the edges Lens (hydrology), a layer of fresh water derived from rainfall, overlying saline groundwater Kamera lens (biology), a unicellular
Lens_(disambiguation)
Optical system where refraction and reflection are combined
refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric combinations are
Catadioptric_system
Mechanical device for measuring lenses
diopters. A lens clock can also be used to estimate the thickness of thin objects, such as a hard or gas-permeable contact lens. Ideally, a contact lens dial
Lens_clock
Photographic lens
5mm. The lens itself is made of a thin weather resistant aluminum shell over plastic internals. The lens is also one of the thinnest lenses offered for
Sony Carl Zeiss Sonnar T* FE 35mm F2.8 ZA
Sony_Carl_Zeiss_Sonnar_T*_FE_35mm_F2.8_ZA
Metamorphic rock
cleavage planes. Under a microscope, the slate is found to consist of very thin lenses of quartz and feldspar (QF-domains) separated by layers of mica (M-domains)
Slate
Thin opaque structure with an opening (aperture) at its center
In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of the diaphragm is to stop the passage of light,
Diaphragm_(optics)
War film by Terrence Malick
The Thin Red Line is a 1998 American epic war film written and directed by Terrence Malick. It is the second film adaptation of the 1962 novel by James
The_Thin_Red_Line_(1998_film)
Convex lens for fire making
A burning glass or burning lens is a large convex lens that can concentrate the Sun's rays onto a small area, heating up the area and thus resulting in
Burning_glass
Lens mount
Nikon F-mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single-lens reflex cameras. The F-mount was first introduced
Nikon_F-mount
2019 Android smartphone manufactured by LG Electronics
The LG G8 ThinQ is an Android smartphone developed by LG Electronics as part of the LG G series. It was officially announced on February 24, 2019. The
LG_G8_ThinQ
Brand of digital cameras made by Panasonic
thinnest 0.3 mm ultra-thin aspheric glass lens is mounted, achieving the thinnest in Lumix history (DMC-FX 60)DMC-GF 1 Flash built-in lens interchangeable digital
Lumix
Type of photographic or other lens
An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much
Apochromat
Camera model
of their FD, EF, and RF lenses for interchangeable lens cameras. It has a variable-angle two-inch, polycrystalline silicon, thin-film transistor, color
Canon_PowerShot_Pro1
Type of transmissive optical device
A superlens, or super lens, is a lens which uses metamaterials to achieve super-resolution imaging and go beyond the diffraction limit. The diffraction
Superlens
American folding cameras (1912–1934)
Pocket Kodak has a lens on a flat platform which extends manually from the body, sealed by a light-tight bellows. Several different lenses were offered, with
Vest_Pocket_Kodak
Optical telescope in Scotland
Light path in a Schmidt–Cassegrain, which uses both mirrors and a thin lens
James_Gregory_Telescope
Photographic lens
field-of-view of 82.5mm. The lens itself is made of a thin weather resistant aluminum shell over plastic internals. The lens showcases a minimalist black
Sony Carl Zeiss Sonnar T* FE 55mm F1.8 ZA
Sony_Carl_Zeiss_Sonnar_T*_FE_55mm_F1.8_ZA
Texture compression Texture filtering Texture mapping Texture mapping unit Thin lens Tiled rendering Tone mapping Transform, clipping, and lighting Triangle
List of computer graphics and descriptive geometry topics
List_of_computer_graphics_and_descriptive_geometry_topics
Device for focusing charged particles
system can be used with different ions A cylinder lens consists of several cylinders whose sides are thin walls. Each cylinder lines up parallel to the optical
Electrostatic_lens
Mathematical operation modeling parallel resistors
{1}{f_{n}(x)}}\\[5mu]\end{aligned}}} In geometric optics the thin lens approximation to the lens maker's equation. f = ρ v i r t u a l ∥ ρ o b j e c t {\displaystyle
Parallel_(operator)
Genetic disorder involving connective tissue
affects the connective tissue. People with the condition are often tall and thin, with long arms, legs, fingers, and toes. They also typically have exceptionally
Marfan_syndrome
THIN LENS
THIN LENS
Boy/Male
Australian, Danish, French, Greek, Vietnamese
Thinker
Boy/Male
Arabic, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Tamil, Telugu
Snow
Boy/Male
Korean
Truth.
Female/Male/Unisex
Korean
Korean name SHIN means "faith, trust." Compare with another form of Shin.
Boy/Male
Korean
The most wealthy.
Boy/Male
English
Follower.
Girl/Female
Norse
Wife of Thrall.
Male
Greek
(Αἴθων) Greek myth name of one of the horses of the sun god Helios, ÆTHON means "burning, fiery."
Boy/Male
Norse
God of the sky.
Male
Vietnamese
Vietnamese name THINH means "prosperous."
Girl/Female
Greek
Divine.
Male
Japanese
(1-晋, 2-信, 3-紳, 4-心, 5-慎, 6-新, 7-進, 8-真) Japanese name SHIN means 1) "advancing," 2) "belief," 3) "gentleman," 4) "heart," 5) "humble," 6) "new," 7) "progressive," and 8) "true." Compare with another form of Shin.
Boy/Male
American, Australian, British, English
Knight's Attendant; Follower
Boy/Male
Indian
Whole
Boy/Male
Arabic, Muslim, Pashtun
Green / Blue Flower
Girl/Female
Danish, German, Swedish
Wise
Surname or Lastname
English
English : variant spelling of Chinn.Chinese : variant of Jin 1.Chinese : Cantonese variant of Qian.Chinese : variant of Qin 1.Chinese : variant of Qin 2.Chinese : variant of Jin 2.Chinese : variant of Jin 3.Korean : there are four Chinese characters for the surname Chin, representing five clans. At least three of the clans have origins in China; most of them migrated to Korea during the Kory{ou} period (ad 918–1392).
Female
Egyptian
, giving.
Male
Greek
Short form of Greek Thanatos, THAN means "death."
Female
Vietnamese
Vietnamese name THI means "poem."
THIN LENS
THIN LENS
Girl/Female
Tamil
Providing water
Boy/Male
Afghan, German
Joy
Boy/Male
German
Angel
Boy/Male
Sikh
Lotus of the Guru submitted by Aman Singh)
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, French, German, Indian, Irish, Italian, Norwegian, Portuguese, Shakespearean, Swedish, Teutonic
Peaceful Ruler; Elf; Magical Counsel
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Tamil, Telugu, Traditional
Indra Shiva; Krishna and Vishnu Conjoined
Girl/Female
Hindu
Same as Gayatri
Girl/Female
Tamil
Preksha | பà¯à®°à¯‡à®•à¯à®·à®¾Â
Viewer, Beholding, Viewing
Boy/Male
Celtic American Arthurian Legend English
Brave; Virtuous.
Boy/Male
English French
Keeper of grain. Surname.
THIN LENS
THIN LENS
THIN LENS
THIN LENS
THIN LENS
pron. & a.
As an adjective, this has the same demonstrative force as the pronoun, but is followed by a noun; as, this book; this way to town.
n.
Thin plates of iron covered with tin; tin plate.
superl.
Rare; not dense or thick; -- applied to fluids or soft mixtures; as, thin blood; thin broth; thin air.
v. i.
To depart from a place or thing.
conj.
In that case; in consequence; as a consequence; therefore; for this reason.
superl.
Not stout; slim; slender; lean; gaunt; as, a person becomes thin by disease.
superl.
Having little thickness or extent from one surface to its opposite; as, a thin plate of metal; thin paper; a thin board; a thin covering.
a.
Being one of two born at a birth; as, a twin brother or sister.
v. i.
To grow or become thin; -- used with some adverbs, as out, away, etc.; as, geological strata thin out, i. e., gradually diminish in thickness until they disappear.
n.
Thin tin plate; also, tin foil for mirrors.
v. t.
To make thin (in any of the senses of the adjective).
superl.
Not close; not crowded; not filling the space; not having the individuals of which the thing is composed in a close or compact state; hence, not abundant; as, the trees of a forest are thin; the corn or grass is thin.
adv.
Then. See Then.
superl.
Slight; small; slender; flimsy; wanting substance or depth or force; superficial; inadequate; not sufficient for a covering; as, a thin disguise.
v. t.
To cover with tin or tinned iron, or to overlay with tin foil.
n.
The first thin coat of tin.
n.
A person or thing that closely resembles another.
a.
Having a thin skin; hence, sensitive; irritable.
conj.
Than.
adv.
Not thickly or closely; in a seattered state; as, seed sown thin.