Chapter 9. Computer vision
... The image is the result of convolving the geometrical image of the object with the impulse response of the lens according to the shift invariance of the lens. There are several points to be taken into account that are important. The linearity of the response in the case of coherent illumination corr ...
... The image is the result of convolving the geometrical image of the object with the impulse response of the lens according to the shift invariance of the lens. There are several points to be taken into account that are important. The linearity of the response in the case of coherent illumination corr ...
Experiments in Optics - Workspace
... diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infinity) – as seen in Figure 1a. Due to the physical size of optical bench this is not always practical ...
... diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infinity) – as seen in Figure 1a. Due to the physical size of optical bench this is not always practical ...
Michelson Interferometer
... Since for fixed d and λ and different values of m, a system of dark and bright circle concentric fringes each corresponding to a constant θ will be observed, such interference fringes are therefore known as fringes of equal inclination. They are localized at infinity. ...
... Since for fixed d and λ and different values of m, a system of dark and bright circle concentric fringes each corresponding to a constant θ will be observed, such interference fringes are therefore known as fringes of equal inclination. They are localized at infinity. ...
Microscopes:
... Bright-field. This is the conventional microscope which is most widely used in the field. It is of particular value for examination of stained smears, especially when used at 1000 x total magnification or greater (usually employing an oil immersion lens). Phase –contrast. Several different forms of ...
... Bright-field. This is the conventional microscope which is most widely used in the field. It is of particular value for examination of stained smears, especially when used at 1000 x total magnification or greater (usually employing an oil immersion lens). Phase –contrast. Several different forms of ...
Micron-scale modifications of Si surface morphology by pulsed
... Equation 共1兲 excludes the effects of lens aberrations. Although we have not quantified the aberrations of the objective lenses used in this study, in most cases light fills only a small fraction of the back-focal-plane aperture of the objective lens and therefore, the diffraction limit described by ...
... Equation 共1兲 excludes the effects of lens aberrations. Although we have not quantified the aberrations of the objective lenses used in this study, in most cases light fills only a small fraction of the back-focal-plane aperture of the objective lens and therefore, the diffraction limit described by ...
A new optical configuration in speckle interferometry for contouring
... The optical arrangement for the image plane speckle interferometric configuration is shown in Fig. 1. The object to be contoured is illuminated normally with a collimated laser beam. The scattered speckle fields are obon either side of the served symmetrically at an angle surface normal via a pair o ...
... The optical arrangement for the image plane speckle interferometric configuration is shown in Fig. 1. The object to be contoured is illuminated normally with a collimated laser beam. The scattered speckle fields are obon either side of the served symmetrically at an angle surface normal via a pair o ...
Tuning the polarization state of light via time retardation with...
... by illuminating the sample with a y-polarized plane wave from below under normal incidence. The near-field amplitude and phase information are obtained by mapping the light scattered from the dielectric silicon tip with a pseudoheterodyne interferometer24 simultaneously with the topography imaging. ...
... by illuminating the sample with a y-polarized plane wave from below under normal incidence. The near-field amplitude and phase information are obtained by mapping the light scattered from the dielectric silicon tip with a pseudoheterodyne interferometer24 simultaneously with the topography imaging. ...
Optical Studies of Materials for Spectral Design Christina ˚ Akerlind
... but still rare in IR. It is however suggested that they can be used to enhance contrasts, once they become available. Military camouflage is therefore required in the whole wavelength range where sensors are common and also against detection of polarization contrasts. Figure 1.1 shows a ladder model ...
... but still rare in IR. It is however suggested that they can be used to enhance contrasts, once they become available. Military camouflage is therefore required in the whole wavelength range where sensors are common and also against detection of polarization contrasts. Figure 1.1 shows a ladder model ...
Revista Mexicana de Física . Simulation of Michelson and
... perpendicular to the solid line to be used as the Y axis. Next, draw a long solid line parallel to the Y axis as far as possible from the “sources”. This line represents the “observation screen” (detection plane), located at a distance so from the midpoint of the sources, as shown in Fig. 4. These t ...
... perpendicular to the solid line to be used as the Y axis. Next, draw a long solid line parallel to the Y axis as far as possible from the “sources”. This line represents the “observation screen” (detection plane), located at a distance so from the midpoint of the sources, as shown in Fig. 4. These t ...
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... • Upon completion of the course the student is expected to have the following skills:understand the principles of geometrical optics • apply geometrical optics to optical instruments • mathematically describe optical waves • perform superpositions of two or more waves in the context of interference ...
... • Upon completion of the course the student is expected to have the following skills:understand the principles of geometrical optics • apply geometrical optics to optical instruments • mathematically describe optical waves • perform superpositions of two or more waves in the context of interference ...
6.1 Characteristics Because VCSELs emit from the top surface of the
... longer, thinner cables. It’s important to design flexible and effecient protocol to leverage the raw bandwidth enabled by optical fiber. Intel has announced its high speed optical cable technology, Light Peak (LPK) [10], which delivers high bandwidth starting at 10Gbps and has the ability to multipl ...
... longer, thinner cables. It’s important to design flexible and effecient protocol to leverage the raw bandwidth enabled by optical fiber. Intel has announced its high speed optical cable technology, Light Peak (LPK) [10], which delivers high bandwidth starting at 10Gbps and has the ability to multipl ...
Greenock Academy Physics Department
... belong to a large family of waves known as the _________________ spectrum. Each member of the electromagnetic spectrum travels through air at a speed of ____________________ ms -1. Each radio transmitter sends out waves of a particular frequency – this is what lets you tune in to different radio sta ...
... belong to a large family of waves known as the _________________ spectrum. Each member of the electromagnetic spectrum travels through air at a speed of ____________________ ms -1. Each radio transmitter sends out waves of a particular frequency – this is what lets you tune in to different radio sta ...
I Plasmonics gets transformed news & views
... t is hard to imagine future nanoscale photonic systems that do not involve plasmonics, a relatively new device technology that uses metals to control the flow of light at the nanoscale1. That is because plasmonics resolves a basic mismatch between wavelength-scale optical devices and the much smalle ...
... t is hard to imagine future nanoscale photonic systems that do not involve plasmonics, a relatively new device technology that uses metals to control the flow of light at the nanoscale1. That is because plasmonics resolves a basic mismatch between wavelength-scale optical devices and the much smalle ...
Oblique surface waves at an interface of metal
... plasmonic crystal with the main optical axes perpendicular to the metal-dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into the contact with semi-infinite dielectric, a new type of surface modes can appear. The ...
... plasmonic crystal with the main optical axes perpendicular to the metal-dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into the contact with semi-infinite dielectric, a new type of surface modes can appear. The ...
PDF only - at www.arxiv.org.
... reflection. In this work, we consider diffractive AR coatings that can overcome the limitations of total internal refraction [4]. We show that it is possible to optimize transmission through an interface for a specific emission pattern and present several designs of optimal AR coatings based on diff ...
... reflection. In this work, we consider diffractive AR coatings that can overcome the limitations of total internal refraction [4]. We show that it is possible to optimize transmission through an interface for a specific emission pattern and present several designs of optimal AR coatings based on diff ...
Principles of Spectroscopy
... scale (typically a few hundredths of a wavenumber). This advantage of FT spectrometers is known as CONNES’ advantage. 2) The JAQUINOT advantage arises from the fact that the circular apertures used in FTIR spectrometers has a larger area than the slits used in grating spectrometers, thus enabling hi ...
... scale (typically a few hundredths of a wavenumber). This advantage of FT spectrometers is known as CONNES’ advantage. 2) The JAQUINOT advantage arises from the fact that the circular apertures used in FTIR spectrometers has a larger area than the slits used in grating spectrometers, thus enabling hi ...
Review Article Nanostructures for Enhanced Light Absorption in
... cross sections and present a promising way of increasing the optical thickness of solar energy devices while maintaining a physically thin structure. Plasmons are electromagnetic modes formed by light-matter coupling in the respective material and geometry. This coupling requires materials (medium) ...
... cross sections and present a promising way of increasing the optical thickness of solar energy devices while maintaining a physically thin structure. Plasmons are electromagnetic modes formed by light-matter coupling in the respective material and geometry. This coupling requires materials (medium) ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.