Diffraction is…
... screen at a time. In this case, the photon would seem to pass through only one slit at a time, yielding a one-slit pattern. Which pattern occurs? Possible Fraunhofer diffraction patterns Each photon passes through only one slit ...
... screen at a time. In this case, the photon would seem to pass through only one slit at a time, yielding a one-slit pattern. Which pattern occurs? Possible Fraunhofer diffraction patterns Each photon passes through only one slit ...
Ray tracing yair
... Ray Matrix for a Continuous Lens A simple thin positive lens •more mass and a longer optical path there than at the edges. •Similarly, a positive continuous lens has an index of refraction that decreases with r. •For a cylindricallly symmetric positive lens, the first two terms of Taylor series exp ...
... Ray Matrix for a Continuous Lens A simple thin positive lens •more mass and a longer optical path there than at the edges. •Similarly, a positive continuous lens has an index of refraction that decreases with r. •For a cylindricallly symmetric positive lens, the first two terms of Taylor series exp ...
An Optical ‘‘Janus’’ Device for Integrated Photonics By Xiang Zhang*
... the underlying material properties in a spatial manner. This is possible because of the invariance of Maxwell’s equations[3–5] under a spatial transformation. Therefore, transformation optics opens the possibility to precisely control the flow of light in a medium and thus allow to design novel devi ...
... the underlying material properties in a spatial manner. This is possible because of the invariance of Maxwell’s equations[3–5] under a spatial transformation. Therefore, transformation optics opens the possibility to precisely control the flow of light in a medium and thus allow to design novel devi ...
Optical quality of the eye lens surfaces from
... The scattering halo of the third Purkinje image is obtained by microdensitometric measurement of the photographic recordings. The measurements (see Fig. 4) show that the third Purkinje image has a Lorentzian intensity distribution modulated by a random distribution (speckle) and that the specular co ...
... The scattering halo of the third Purkinje image is obtained by microdensitometric measurement of the photographic recordings. The measurements (see Fig. 4) show that the third Purkinje image has a Lorentzian intensity distribution modulated by a random distribution (speckle) and that the specular co ...
Lasers versus LEDs for Bioinstrumentation Laser Advantage #1
... applications the illumination area is very small as outlined in the above table. The ability to collect and focus light from an extended source into a finite target area is defined by the size of the emitting surface area and the solid angle into which it radiates in a property called etendue. The i ...
... applications the illumination area is very small as outlined in the above table. The ability to collect and focus light from an extended source into a finite target area is defined by the size of the emitting surface area and the solid angle into which it radiates in a property called etendue. The i ...
Fourier-Space Image Restoration Ronald R. Parenti
... II Computational restoration techniques are frequently applied to twodimensional images when the propagation medium or noise in the sensing apparatus significantly corrupts the recorded image data. Deconvolution processes are among the oldest and best understood of these techniques, although nonl\ne ...
... II Computational restoration techniques are frequently applied to twodimensional images when the propagation medium or noise in the sensing apparatus significantly corrupts the recorded image data. Deconvolution processes are among the oldest and best understood of these techniques, although nonl\ne ...
Document
... • The lens produces at its focal plane the Fraunhofer diffraction pattern of the transparency • When the transparency is placed exactly one focal distance behind the lens (i.e., z=f ), the Fourier transform relationship is exact. ...
... • The lens produces at its focal plane the Fraunhofer diffraction pattern of the transparency • When the transparency is placed exactly one focal distance behind the lens (i.e., z=f ), the Fourier transform relationship is exact. ...
Optical Elements
... only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes maximum reflection coefficient close to 100 %. Therefore, this type of mirrors is used when the beam path is folded many times and the delivered optical ...
... only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes maximum reflection coefficient close to 100 %. Therefore, this type of mirrors is used when the beam path is folded many times and the delivered optical ...
On the diffraction limit for lensless imaging
... where the notation is the same as in Eq. (8) but v and I a (M , V) P are replaced by their arithmetic means for each element of summation. Equation (10) was used to generate lists, accurate to six digits, of/(Av/V«) for consecutive upper limits A^ < 500 and increments 8v = 0.01M. These lists were us ...
... where the notation is the same as in Eq. (8) but v and I a (M , V) P are replaced by their arithmetic means for each element of summation. Equation (10) was used to generate lists, accurate to six digits, of/(Av/V«) for consecutive upper limits A^ < 500 and increments 8v = 0.01M. These lists were us ...
Lecture 04
... • Point spread function 3D • Though often defined as the same that is not quite true ...
... • Point spread function 3D • Though often defined as the same that is not quite true ...
Microscope Project for Undergraduate Laboratories Abstract
... section, we justify some of the choices we made for components. The optical breadboard with 1/4”-20 tapped holes in a 1-inch square grid was used as a platform to build the microscope if an optical table is unavailable. Using small breadboards can save space. One dimension needs to be at least 2 fee ...
... section, we justify some of the choices we made for components. The optical breadboard with 1/4”-20 tapped holes in a 1-inch square grid was used as a platform to build the microscope if an optical table is unavailable. Using small breadboards can save space. One dimension needs to be at least 2 fee ...
Analytic design method for optimal imaging: coupling three ray sets
... In contrast, direct optics design methods do not necessarily follow this design strategy. Usually, a key objective is to find a set of unrestricted free-form surfaces designed to have specific predefined characteristics. Where unrestricted means that the optical surfaces can have any shape to fulfil ...
... In contrast, direct optics design methods do not necessarily follow this design strategy. Usually, a key objective is to find a set of unrestricted free-form surfaces designed to have specific predefined characteristics. Where unrestricted means that the optical surfaces can have any shape to fulfil ...
Fourier Optics
... 'spatial filters' box in the Fourier transform plane and center it on the DC spot. (This spot will be bright so don’t look at it for long periods of time.) Place slide #4 (spokes), or another object of variable frequency, such as the 'picket fence' in the input plane. If you are using an iris, open ...
... 'spatial filters' box in the Fourier transform plane and center it on the DC spot. (This spot will be bright so don’t look at it for long periods of time.) Place slide #4 (spokes), or another object of variable frequency, such as the 'picket fence' in the input plane. If you are using an iris, open ...
F-number
In optics, the f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture) of an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil. It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography. The number is commonly notated using a hooked f, i.e. f/N, where N is the f-number.