Three-dimensional digitization of highly reflective and transparent
... motion, between the specular object and its environment, in order to reconstruct shape geometry of specular objects. A pair of coupled nonlinear partial differential equations, relating specular flow to the surface, must be solved. Although the solution of these equations in general is difficult, au ...
... motion, between the specular object and its environment, in order to reconstruct shape geometry of specular objects. A pair of coupled nonlinear partial differential equations, relating specular flow to the surface, must be solved. Although the solution of these equations in general is difficult, au ...
Coherence scanning interferometry: linear theory of surface
... (ii) For a perfect conductor the reflection coefficient is indeed constant (R 1). (iii) More generally, the reflection coefficient depends on polarization but the sum of reflection coefficients for orthogonal polarization states is approximately constant for angles of incidence that are less than ...
... (ii) For a perfect conductor the reflection coefficient is indeed constant (R 1). (iii) More generally, the reflection coefficient depends on polarization but the sum of reflection coefficients for orthogonal polarization states is approximately constant for angles of incidence that are less than ...
Mimicking the colourful wing scale structure of the
... suppressed, whereas retro-reflected light from four segments of the cavity edges is detected12,13 (Fig. 1d, right). In microstructures without this double reflection, both the colour mixing and polarisation conversion are absent. This is the case for scales of Papilio ulysses, a relative of P. blume ...
... suppressed, whereas retro-reflected light from four segments of the cavity edges is detected12,13 (Fig. 1d, right). In microstructures without this double reflection, both the colour mixing and polarisation conversion are absent. This is the case for scales of Papilio ulysses, a relative of P. blume ...
Surface Plasmon Polaritons Excited By Electromagnetic Waves
... Also, implicit here, is that k1x = k2x = kx , which is the generalized Snell’s law of refraction in the absence of a surface phase discontinuity. For the cases where 1 + ǫ1 k2z /ǫ2 k1z 6= 0, these boundary conditions support non-trivial field solutions for Ht and Hr when Σ = 0 and K = 0, which resul ...
... Also, implicit here, is that k1x = k2x = kx , which is the generalized Snell’s law of refraction in the absence of a surface phase discontinuity. For the cases where 1 + ǫ1 k2z /ǫ2 k1z 6= 0, these boundary conditions support non-trivial field solutions for Ht and Hr when Σ = 0 and K = 0, which resul ...
F1 The ray approximation in optics assumes that light travels from
... The ray approximation in optics assumes that light travels from one point to another along a narrow path called a ray that may be represented by a directed line (i.e. a line with an arrow on it). In a uniform medium (where the refractive index is the same everywhere) the rays are straight lines, tho ...
... The ray approximation in optics assumes that light travels from one point to another along a narrow path called a ray that may be represented by a directed line (i.e. a line with an arrow on it). In a uniform medium (where the refractive index is the same everywhere) the rays are straight lines, tho ...
Low-grazing angles scattering of electromagnetic waves from one
... understand that designing an accurate model for this quantity is challenging. The domain of validity of the most classical approximate models [2] has already been studied and more or less precisely defined (see for example [3–6]): height very small compared to the electromagnetic wavelength for the S ...
... understand that designing an accurate model for this quantity is challenging. The domain of validity of the most classical approximate models [2] has already been studied and more or less precisely defined (see for example [3–6]): height very small compared to the electromagnetic wavelength for the S ...
Bild 1
... substrate will then be reflected and can escape from the semiconductor through the top surface. DBR-multilayer reflector consisting of typically 5-50 pairs of two materials with different refractive indices. Difference in refractive index the Fresnel reflection will occur at each of the interfaces. ...
... substrate will then be reflected and can escape from the semiconductor through the top surface. DBR-multilayer reflector consisting of typically 5-50 pairs of two materials with different refractive indices. Difference in refractive index the Fresnel reflection will occur at each of the interfaces. ...
10.3.2.1.1 Spectral apparatus An optical arrangement or an
... When the radiation passes through the same optical components before and after being dispersed, the spectral system is autocollimative. Spectral separation or isolation of optical radiation may be achieved by using a dispersive component such as a prism, a diffraction grating, or a multiple-beam int ...
... When the radiation passes through the same optical components before and after being dispersed, the spectral system is autocollimative. Spectral separation or isolation of optical radiation may be achieved by using a dispersive component such as a prism, a diffraction grating, or a multiple-beam int ...
Refraction
... back/forward ‘arrow keys’ on keyboard mouse click (mouse click must be outside any interactive flash animation area present on a slide) ...
... back/forward ‘arrow keys’ on keyboard mouse click (mouse click must be outside any interactive flash animation area present on a slide) ...
Light Measurement Handbook
... While these thermal detectors have a very flat spectral responsivity, they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially bet ...
... While these thermal detectors have a very flat spectral responsivity, they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially bet ...
Get PDF - OSA Publishing
... [20,21]. Figure 3(c) shows an example of a measured concave mirror surface which is integrated with gradient data in Fig. 3(a) and (b). 3. Method of dynamic 3D sensing for specular reflective surface For measuring dynamic specular scenes, one of the major problems is how to calculate the pattern poi ...
... [20,21]. Figure 3(c) shows an example of a measured concave mirror surface which is integrated with gradient data in Fig. 3(a) and (b). 3. Method of dynamic 3D sensing for specular reflective surface For measuring dynamic specular scenes, one of the major problems is how to calculate the pattern poi ...
Optical System design
... Within WinLens itself, there is a powerful interactive glass map (Fig. 4). This can: • highlight materials used in the current lens design • allow the designer to change a glass in the design (by clicking on the map) • search for and display a subset of glasses • customise axes and colour code g ...
... Within WinLens itself, there is a powerful interactive glass map (Fig. 4). This can: • highlight materials used in the current lens design • allow the designer to change a glass in the design (by clicking on the map) • search for and display a subset of glasses • customise axes and colour code g ...
File - Electrical Engineering
... a long distance from the light source, the wavefront would be virtually straight. In a short interval of time each end of the wavefront would move forward a set distance. If we look at a single ray of light moving through a clear material the distance advanced by the wavefront would be quite reg ...
... a long distance from the light source, the wavefront would be virtually straight. In a short interval of time each end of the wavefront would move forward a set distance. If we look at a single ray of light moving through a clear material the distance advanced by the wavefront would be quite reg ...
Lecture-10-Optics
... Consider 1 = 2 , then r1 – r2 = 2m/k = m (max) for m = 0, 1, 2, … and r1 – r2 = m/k = m/2 (min) for m = 0, 1, 3, … These conditions define hyperbolas in the 2D x-y plane or hyperboloids of revolution in 3D (See Fig. 9.3 as previously shown). ...
... Consider 1 = 2 , then r1 – r2 = 2m/k = m (max) for m = 0, 1, 2, … and r1 – r2 = m/k = m/2 (min) for m = 0, 1, 3, … These conditions define hyperbolas in the 2D x-y plane or hyperboloids of revolution in 3D (See Fig. 9.3 as previously shown). ...
Plasmonic orbital angular momentum manipulation through
... their strong interaction with free electrons of the metal [1]. The most attractive characteristics of SPP are high localization and remarkable field enhancement in nature, allowing them to be controlled and manipulated in nanometer scales [2-4]. To achieve similar functionalities of traditional elec ...
... their strong interaction with free electrons of the metal [1]. The most attractive characteristics of SPP are high localization and remarkable field enhancement in nature, allowing them to be controlled and manipulated in nanometer scales [2-4]. To achieve similar functionalities of traditional elec ...
U17301 - 3B Scientific
... E7 Light ray shift by glass planparallel plate (U17300/U17301) If a light ray passes through a planparallel plate its direction is not changed. The outgoing ray is shifted in accordance with the incoming one. The shift d can be estimated with respect to the thickness h of the plate using the formula ...
... E7 Light ray shift by glass planparallel plate (U17300/U17301) If a light ray passes through a planparallel plate its direction is not changed. The outgoing ray is shifted in accordance with the incoming one. The shift d can be estimated with respect to the thickness h of the plate using the formula ...
surface topology reconstruction from the white light interferogram by
... interferogram for the surface topology reconstruction is more complicated. This is caused by an envelope effect influencing the signal intensity. Currently, a number of reconstruction methods have been developed, for example the method of envelope detection or determination of maximum intensity in t ...
... interferogram for the surface topology reconstruction is more complicated. This is caused by an envelope effect influencing the signal intensity. Currently, a number of reconstruction methods have been developed, for example the method of envelope detection or determination of maximum intensity in t ...
Diffusion-controlled optical elements for
... Ethylene glycol 共neat兲 and an ethylene glycol:water mixture 共85:15 by weight兲 were used as the fluids for the core 共nD = 1.431兲 and the cladding 共nD = 1.414兲. We chose these solutions for four reasons. First, they do not swell PDMS,11 and therefore do not affect the dimensions of the microchannels. ...
... Ethylene glycol 共neat兲 and an ethylene glycol:water mixture 共85:15 by weight兲 were used as the fluids for the core 共nD = 1.431兲 and the cladding 共nD = 1.414兲. We chose these solutions for four reasons. First, they do not swell PDMS,11 and therefore do not affect the dimensions of the microchannels. ...
Optical fibers - IndiaStudyChannel.com
... value n2 the refractive index of the cladding. The diameter of the core is narrow (5-10m) generally a few times the wavelength of the light propagating through it. Only rays nearly parallel to the fiber axis will travel through. It supports a single mode propagation because of its narrow core. Sing ...
... value n2 the refractive index of the cladding. The diameter of the core is narrow (5-10m) generally a few times the wavelength of the light propagating through it. Only rays nearly parallel to the fiber axis will travel through. It supports a single mode propagation because of its narrow core. Sing ...
MINIATURIZED FLUORESCENCE EXCITATION PLATFORM WITH OPTICAL FIBER FOR BIO-DETECTION CHIPS
... measurement system for fluorescence spectroscopy in microfluidic channels [3]. Excitation light was launched into the microchannel by a single-mode fiber guide on top of the microchannel. A fiber terminated waveguide was used to collect fluorescence light. Optical losses between waveguides and fiber ...
... measurement system for fluorescence spectroscopy in microfluidic channels [3]. Excitation light was launched into the microchannel by a single-mode fiber guide on top of the microchannel. A fiber terminated waveguide was used to collect fluorescence light. Optical losses between waveguides and fiber ...
Contactless visible light probing for nanoscale ICs through 10 μm
... Abstract: This paper explains why only optical techniques will be able to provide debug and diagnosis of bulk silicon FinFET technologies. In order to apply optical techniques through a convenient thickness of silicon on the one hand, light is limited to NIR to minimize absorption. To match resoluti ...
... Abstract: This paper explains why only optical techniques will be able to provide debug and diagnosis of bulk silicon FinFET technologies. In order to apply optical techniques through a convenient thickness of silicon on the one hand, light is limited to NIR to minimize absorption. To match resoluti ...
Optical measurement of the axial eye length by laser Doppler
... At the position where the fringes are seen, d is measured and OL = d ± CL/2. Actually, the first measurements of the eye length, with the use of a precursor of the technique described here, were carried out in this manner.910 An electronic detection of interference fringes to indicate the balance of ...
... At the position where the fringes are seen, d is measured and OL = d ± CL/2. Actually, the first measurements of the eye length, with the use of a precursor of the technique described here, were carried out in this manner.910 An electronic detection of interference fringes to indicate the balance of ...