Lecture 35: Holography.
... the visual information of the scene To view a hologram, the wavefront is reconstructed View what we would have seen if present at the original scene through the window defined by the hologram Provides depth perception and parallax ...
... the visual information of the scene To view a hologram, the wavefront is reconstructed View what we would have seen if present at the original scene through the window defined by the hologram Provides depth perception and parallax ...
Wavelength-tuning interferometry of intraocular distances
... path length is changed in order to match the light transit times in the reference beam to the light transit time in the object. An alternative approach for measuring optical distances is to use frequency- or Fourier-domain techniques. In these techniques a fixed-reference path length is used. The ob ...
... path length is changed in order to match the light transit times in the reference beam to the light transit time in the object. An alternative approach for measuring optical distances is to use frequency- or Fourier-domain techniques. In these techniques a fixed-reference path length is used. The ob ...
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r - Nano[studijní] materiály - Technical University of Liberec
... • The second crystal, made from the same material as sample crystal, but with another length is used with mirror placed on the top of this crystal • If there is applied the same electric field on investigated sample (light is passing through it) and on compensating crystal (light is reflected from t ...
... • The second crystal, made from the same material as sample crystal, but with another length is used with mirror placed on the top of this crystal • If there is applied the same electric field on investigated sample (light is passing through it) and on compensating crystal (light is reflected from t ...
... abruptly at a surface and is constant between the surfaces. The refraction of light at surfaces separating media of different refractive indices makes it possible to construct imaging lenses. Glass surfaces can be shaped. Electron optics: Here, changes in the “refractive index” are gradual so rays a ...
Introduction to Phase Contrast
... Zernike succeeded in devising a method--now known as Phase Contrast microscopy--for making unstained, phase objects yield contrast images as if they were amplitude objects. Amplitude objects show excellent contrast when the diffracted and direct light are out of step (display a phase difference) by ...
... Zernike succeeded in devising a method--now known as Phase Contrast microscopy--for making unstained, phase objects yield contrast images as if they were amplitude objects. Amplitude objects show excellent contrast when the diffracted and direct light are out of step (display a phase difference) by ...
Measurement of refractive index of prism using spectrometer
... and lock the prism table in the position so the the incident beam falls on one of the edges of the prism. Now, move the telescope and locate the images of the slit and note down the angles. The difference beteen both the angles is 2A. Hence, half of the diffece will give us A. • Now, choose an angle ...
... and lock the prism table in the position so the the incident beam falls on one of the edges of the prism. Now, move the telescope and locate the images of the slit and note down the angles. The difference beteen both the angles is 2A. Hence, half of the diffece will give us A. • Now, choose an angle ...
Overview
... -So, the index is a function of wavelength -Therefore, the amount of refraction is different -This effect is called chromatic dispersion ...
... -So, the index is a function of wavelength -Therefore, the amount of refraction is different -This effect is called chromatic dispersion ...
5. Reflection, refraction and polarization
... the angle of incidence, θi, where each is defined with respect to the surface normal. The angle of refraction, θt, (t for transmitted) is described by Snell’s law (of Refraction): ni sin ! i = nt sin ! t . Refraction is used to guide light in optical instruments. Lenses for imaging are the most comm ...
... the angle of incidence, θi, where each is defined with respect to the surface normal. The angle of refraction, θt, (t for transmitted) is described by Snell’s law (of Refraction): ni sin ! i = nt sin ! t . Refraction is used to guide light in optical instruments. Lenses for imaging are the most comm ...
Document
... On the right the 2nd harmonic is collected, the background is suppressed and the near field signal is restricted to a 20nm distance from the surface. ...
... On the right the 2nd harmonic is collected, the background is suppressed and the near field signal is restricted to a 20nm distance from the surface. ...
7_SNOM
... On the right the 2nd harmonic is collected, the background is suppressed and the near field signal is restricted to a 20nm distance from the surface. ...
... On the right the 2nd harmonic is collected, the background is suppressed and the near field signal is restricted to a 20nm distance from the surface. ...
Dark fringes
... [Example] A drop of oil is on a plane glass. When a monochromatic light with =5760Å is incident on it normally, the interference fringes produced by the reflected lights are shown in figure. The center point of the oil is dark. Find Is the bright or dark fringe at the edge of the oil? The maxi ...
... [Example] A drop of oil is on a plane glass. When a monochromatic light with =5760Å is incident on it normally, the interference fringes produced by the reflected lights are shown in figure. The center point of the oil is dark. Find Is the bright or dark fringe at the edge of the oil? The maxi ...
Improved Reconstruction of Images Distorted by Water Waves
... algorithm (Duda et al., 2000) is used along with a frequency domain analysis for generating and distinguishing the two groups in terms of the quality of their member frames. ...
... algorithm (Duda et al., 2000) is used along with a frequency domain analysis for generating and distinguishing the two groups in terms of the quality of their member frames. ...
Optical aberration
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An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.