The Wigner function in paraxial optics I. Matrix
... optical means has become a powerful tool, due to its parallelism and speed. For signals in time, the conjugate variable is the frequency, (i.e., the color for light or the tone for sound). Optical signals in space, on the other hand, are often understood as the light distribution on the plane of a s ...
... optical means has become a powerful tool, due to its parallelism and speed. For signals in time, the conjugate variable is the frequency, (i.e., the color for light or the tone for sound). Optical signals in space, on the other hand, are often understood as the light distribution on the plane of a s ...
Optics - Frederiksen
... Spectral tube holder and power supply This holder makes the use of spectral tubes easier and safer. The spectral tube is mounted from the front in the insulated holders with electrodes, where the lower holder is spring loaded parallel to the tube axis. The holder is provided with a power supply whic ...
... Spectral tube holder and power supply This holder makes the use of spectral tubes easier and safer. The spectral tube is mounted from the front in the insulated holders with electrodes, where the lower holder is spring loaded parallel to the tube axis. The holder is provided with a power supply whic ...
About the reduction of reflections for camera lenses How T
... 80 years ago the story of T*-optics, which was to provide ways to ‘make glass invisible’, began at the ZEISS plant in Jena. The invention of anti-reflection (AR) coatings to reduce reflections from glass surfaces that are in direct contact with air represents one of the most outstanding innovations ...
... 80 years ago the story of T*-optics, which was to provide ways to ‘make glass invisible’, began at the ZEISS plant in Jena. The invention of anti-reflection (AR) coatings to reduce reflections from glass surfaces that are in direct contact with air represents one of the most outstanding innovations ...
Specifying an Aspheric Surface
... of surfaces and typically large apertures. New technology permits the utilization of increasingly complex aspheric surfaces for the cost-effective solution of optical problems and applications ranging from tiny lenses used in microlithography to the large 10-meter telescopes, or in conjunction with ...
... of surfaces and typically large apertures. New technology permits the utilization of increasingly complex aspheric surfaces for the cost-effective solution of optical problems and applications ranging from tiny lenses used in microlithography to the large 10-meter telescopes, or in conjunction with ...
Issues with Telescopes
... accomplishes feats of astrophotography that are simply unattainable with any other telescopic lens, telescope, or electronic imager. No other photo-optical instrument permits such extremely wide-field photography at such fast photographic speed and with such an amazingly flat imaging area to the fie ...
... accomplishes feats of astrophotography that are simply unattainable with any other telescopic lens, telescope, or electronic imager. No other photo-optical instrument permits such extremely wide-field photography at such fast photographic speed and with such an amazingly flat imaging area to the fie ...
Modes in Optical Fibers
... the fiber end after cleaving. Mount the ends of the fiber in the fiber holder, insert into fiber coupler and tighten the knob at the end of the fiber coupler. Keep the input fiber end nearly to the focal point (approx. 8 mm from the lens) and the output fiber end close to the lens to get a sharp pat ...
... the fiber end after cleaving. Mount the ends of the fiber in the fiber holder, insert into fiber coupler and tighten the knob at the end of the fiber coupler. Keep the input fiber end nearly to the focal point (approx. 8 mm from the lens) and the output fiber end close to the lens to get a sharp pat ...
UNIVERSIDAD DE MURCIA ABERRACIONES EN LENTES OFTÁLMICAS DE POTENCIA
... se contrae y las fibras axiales de la zónula se relajan produciendo un aumento del espesor y de la curvatura de las superficies del cristalino, principalmente de la anterior. En personas emétropes o amétropes corregidas, este mecanismo permite ver nítidamente tanto de lejos como de cerca hasta aprox ...
... se contrae y las fibras axiales de la zónula se relajan produciendo un aumento del espesor y de la curvatura de las superficies del cristalino, principalmente de la anterior. En personas emétropes o amétropes corregidas, este mecanismo permite ver nítidamente tanto de lejos como de cerca hasta aprox ...
Confocal microscopy with a volume holographic filter
... The pinhole preceding the detector in a confocal microscope is a shift-variant optical element. On-axis in-focus point-source objects are imaged exactly inside the pinhole and give maximal intensity. An out-offocus object, even when it is on axis, is equivalent to an extended source on the input foc ...
... The pinhole preceding the detector in a confocal microscope is a shift-variant optical element. On-axis in-focus point-source objects are imaged exactly inside the pinhole and give maximal intensity. An out-offocus object, even when it is on axis, is equivalent to an extended source on the input foc ...
Resolving the Vergence-Accommodation Conflict in Head Mounted
... The authors rely on the specifications of the optometer developed in [25]4 to determine that the speed of relay lens movement. They measure that the mechanism takes less than 0.3 seconds to change from 20 cm to 10 m focal plane distance (5 and 0.1 diopters respectively), which they conclude is fast ...
... The authors rely on the specifications of the optometer developed in [25]4 to determine that the speed of relay lens movement. They measure that the mechanism takes less than 0.3 seconds to change from 20 cm to 10 m focal plane distance (5 and 0.1 diopters respectively), which they conclude is fast ...
Optics Image Formation from Mirrors and Lenses
... This is not true for all optical devices, but we can work out things about how the image will form for many different optical devices. ...
... This is not true for all optical devices, but we can work out things about how the image will form for many different optical devices. ...
Accommodation demand and deprivation in kitten ocular
... investigated in four groups of kittens (total n = 29). Group 1 consisted of five normal kittens; group 2 (nine kittens) had monocular radial keratotomy to induce relative hypermetropia and more accommodation demand as well as to impart interocular refractive differences (anisometropia); group 3 (eig ...
... investigated in four groups of kittens (total n = 29). Group 1 consisted of five normal kittens; group 2 (nine kittens) had monocular radial keratotomy to induce relative hypermetropia and more accommodation demand as well as to impart interocular refractive differences (anisometropia); group 3 (eig ...
Accommodation demand and deprivation in kitten ocular
... lens focal length differences in these eyes were approximately the same as those of the radial keratotomy group. In all three treated groups, the interocular differences were greater for the anterior focal length, especially in the fourth group in which the ratio of differences anterior to posterior ...
... lens focal length differences in these eyes were approximately the same as those of the radial keratotomy group. In all three treated groups, the interocular differences were greater for the anterior focal length, especially in the fourth group in which the ratio of differences anterior to posterior ...
Holographic optics for a matched-filter optical
... The requirements on and the performance of holographic Fourier transform lenses for a matched-filter optical processor are discussed. The holographic aberrations were analyzed using a ray-tracing computer program, and holographic lenses were fabricated and assembled into an optical processor. Analys ...
... The requirements on and the performance of holographic Fourier transform lenses for a matched-filter optical processor are discussed. The holographic aberrations were analyzed using a ray-tracing computer program, and holographic lenses were fabricated and assembled into an optical processor. Analys ...
Lecture-6-Optics
... so Note: si on the left of V is now taken as positive; opposite to the lens system Similar behaviors and properties: concave mirror convex lens convex mirror concave lens ...
... so Note: si on the left of V is now taken as positive; opposite to the lens system Similar behaviors and properties: concave mirror convex lens convex mirror concave lens ...
Optical microscope - Frank`s Hospital Workshop
... they offer high magnifications (up to about 200×) without the need to use eyepieces, and at very low cost. The precise magnification is determined by the working distance between the camera and the object, and good supports are needed to control the image. The images can be recorded and stored in th ...
... they offer high magnifications (up to about 200×) without the need to use eyepieces, and at very low cost. The precise magnification is determined by the working distance between the camera and the object, and good supports are needed to control the image. The images can be recorded and stored in th ...
Ch 03 - Aberrations
... In the preceding section on coma, we introduced the terms “tangential” and “sagittal”; a fuller discussion of these terms is appropriate at this point. If a lens system is represented by a drawing of its axial section, rays which lie in the plane of the drawing are called meridional or tangential ra ...
... In the preceding section on coma, we introduced the terms “tangential” and “sagittal”; a fuller discussion of these terms is appropriate at this point. If a lens system is represented by a drawing of its axial section, rays which lie in the plane of the drawing are called meridional or tangential ra ...
Design of a spherical focal surface using close
... density along the sensor face prevent this type of sensor from being used for high resolution, diffraction limited imagers where optical tolerances are tight and even coverage of the field is required. Recent investigations into monocentric imaging systems illustrate the possibilities for wide-field ...
... density along the sensor face prevent this type of sensor from being used for high resolution, diffraction limited imagers where optical tolerances are tight and even coverage of the field is required. Recent investigations into monocentric imaging systems illustrate the possibilities for wide-field ...
Stops: Finite nature of lenses affects the energy and... and imaged by optical systems
... Thus, as n increases then δ also increases. So n decreases as λ increases (see figure 3.40) and n increases as λ decreases. ⇒δ(λRed) < δ (λBlue) (can also be seen in the figure with colors). The smallest value of δ , the minimum deviation, δm, is important. ...
... Thus, as n increases then δ also increases. So n decreases as λ increases (see figure 3.40) and n increases as λ decreases. ⇒δ(λRed) < δ (λBlue) (can also be seen in the figure with colors). The smallest value of δ , the minimum deviation, δm, is important. ...
Blind Correction of Optical Aberrations - Max-Planck
... an image obtained by sharpening the blurry image using, say, an algorithm that filters the image to increase high frequencies. Furthermore, we emphasize that our approach is blind, i.e., it requires as an input only the blurry image, and not a point spread function that we may have obtained using ot ...
... an image obtained by sharpening the blurry image using, say, an algorithm that filters the image to increase high frequencies. Furthermore, we emphasize that our approach is blind, i.e., it requires as an input only the blurry image, and not a point spread function that we may have obtained using ot ...
Plasmonic Nearfield Scanning Probe with High Transmission
... arrays,31 and single or multiple circular rings,12,32 have been investigated to excite and focus SPPs. While most of the efforts were concentrated on designing better structures to focus SPPs on a planar metal surface,33-36 special applications on nonplanar samples request new plasmonic focusing dev ...
... arrays,31 and single or multiple circular rings,12,32 have been investigated to excite and focus SPPs. While most of the efforts were concentrated on designing better structures to focus SPPs on a planar metal surface,33-36 special applications on nonplanar samples request new plasmonic focusing dev ...
High resolution transmission electron microscopy
... Electrons are focused by simple round magnetic lenses which properties resemble the optical properties of a wine glass…. Unlike in light optics the wavelength (2pm for 300kV) is not the resolution limiting factor. However lens aberrations and instabilities of the electronics (lens currents etc.) lim ...
... Electrons are focused by simple round magnetic lenses which properties resemble the optical properties of a wine glass…. Unlike in light optics the wavelength (2pm for 300kV) is not the resolution limiting factor. However lens aberrations and instabilities of the electronics (lens currents etc.) lim ...
םימצמצ
... Thus, as n increases then δ also increases. So n decreases as λ increases (see figure 3.40) and n increases as λ decreases. ⇒δ(λRed) < δ (λBlue) (can also be seen in the figure with colors). The smallest value of δ , the minimum deviation, δm, is important. ...
... Thus, as n increases then δ also increases. So n decreases as λ increases (see figure 3.40) and n increases as λ decreases. ⇒δ(λRed) < δ (λBlue) (can also be seen in the figure with colors). The smallest value of δ , the minimum deviation, δm, is important. ...
Aberrations
... By tracing a number of rays through the pupil, and measuring the TRA of each, we can get the slope of W; then by numerical integration, we can find the wavefront aberrations, W. Somewhat remarkably, therefore, we can find W without having to track the path length of the rays we use to find it. (This ...
... By tracing a number of rays through the pupil, and measuring the TRA of each, we can get the slope of W; then by numerical integration, we can find the wavefront aberrations, W. Somewhat remarkably, therefore, we can find W without having to track the path length of the rays we use to find it. (This ...
Schneider Kreuznach
Schneider Kreuznach (German pronunciation: [ˌʃnaɪdɐ ˈkʁɔʏtsnax]) is the abbreviated name of the company Jos. Schneider Optische Werke GmbH, which is sometimes also simply referred to as Schneider. They are a manufacturer of industrial and photographic optics. The company was founded on 18 January 1913 by Joseph Schneider as Optische Anstalt Jos. Schneider & Co. at Bad Kreuznach in Germany. The company changed its name to Jos. Schneider & Co., Optische Werke, Kreuznach in 1922, and to the current Jos. Schneider Optische Werke GmbH in 1998.The company is known partly for its many innovative lens designs over the course of its existence. In 2001, Schneider received an Oscar for Technical Achievement for their Super-Cinelux motion picture lenses. They are best known as manufacturers of high-quality large format lenses for view cameras, enlarger lenses, and high quality photographic loupes. They also make a limited amount of small- and medium-format lenses, and have, at various times, manufactured eyeglasses and camera rangefinders, as well as being an OEM lens maker for Kodak and Samsung digital cameras. They currently supply the lenses for the LG Dare, LG Viewty KU990, LG Renoir KC910, LG Viewty Smart GC900 and the LG enV Touch. They also supplied the lenses for the Kodak Regent camera in the 1930s and the classic Kodak Retina and Kodak Retinette camera series in the 1950s and 1960s. In 1961, they created Feinwerktechnik GmbH, a manufacturer of electrical-hydraulic servo valves. Over the past several years, they have acquired several other companies:In 1985, they acquired the B+W Filter Manufacturing Company (founded in 1947 by partners Biermann and Weber), maker of the well-respected line of B+W filters. In July 1987, they purchased Rollei Fototechnic GmbH.In 1989, they purchased Käsemann/Oberaudorf, a manufacturer of glass and plastic polarizing materials.After 1991 they acquired the former East-German (GDR) camera and lens manufacturer Pentacon/Practica (Dresden)In 2000, they acquired Century Optics, an American lensmaking firm.From the start of its production in 1914, Schneider had produced their 500,000th lens by June 1932, their millionth by November 1936, and their 10 millionth lens by January 1967. As of April 2000, they have produced over 14,730,000 lenses. The list below converts any cm designations on earlier lenses to mm (so a 16.5 cm lens is shown as a 165 mm lens).