Lecture-6-Optics
... For example, if nf = 1.6, i = 30, D = 50 m Then # reflections per length = N/L = 2000/feet = 6,600/meter To prevent cross-talk, must use a cladding. Typically the fiber core has nf = 1.6 and the cladding has nc = 1.5. Rays that are incident (picture on the right) with angles greater than max wi ...
... For example, if nf = 1.6, i = 30, D = 50 m Then # reflections per length = N/L = 2000/feet = 6,600/meter To prevent cross-talk, must use a cladding. Typically the fiber core has nf = 1.6 and the cladding has nc = 1.5. Rays that are incident (picture on the right) with angles greater than max wi ...
Novel methods used to test large flat mirrors
... The most accurate 2m-diameter flat mirror in the world was made using new surface-measurement techniques in concert with software that simulates polishing processes. The main issue faced when manufacturing a high-accuracy large flat mirror is measurement accuracy. It is difficult to measure a large ...
... The most accurate 2m-diameter flat mirror in the world was made using new surface-measurement techniques in concert with software that simulates polishing processes. The main issue faced when manufacturing a high-accuracy large flat mirror is measurement accuracy. It is difficult to measure a large ...
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. ...
reflection and refraction
... (A) Lead ball will float with ~ 83% of volume below mercury surface (B) Lead ball will float with 100% of volume below mercury surface (C) Lead ball will float with ~17% of volume below mercury surface (D) Lead ball will sink ...
... (A) Lead ball will float with ~ 83% of volume below mercury surface (B) Lead ball will float with 100% of volume below mercury surface (C) Lead ball will float with ~17% of volume below mercury surface (D) Lead ball will sink ...
General Introduction of Optical
... the microscope projects light onto the sample. Classical biological microscope: thin specimen; light is transmitted through the sample, focused with the objective and then passed into the eyepieces of the microscope. Diascopic For surface of integrated circuits: light passed through the objectiv ...
... the microscope projects light onto the sample. Classical biological microscope: thin specimen; light is transmitted through the sample, focused with the objective and then passed into the eyepieces of the microscope. Diascopic For surface of integrated circuits: light passed through the objectiv ...
Overview of various methods for measuring a lens focal length
... This tutorial describes methods for measuring a lens focal length. Most of them use paraxial optic formula (Gaussian equation, Newton equation,…) Others use diffraction theory with gratings. Measurements are performed with a microscope translated on an optical rail, or by using interferometers for m ...
... This tutorial describes methods for measuring a lens focal length. Most of them use paraxial optic formula (Gaussian equation, Newton equation,…) Others use diffraction theory with gratings. Measurements are performed with a microscope translated on an optical rail, or by using interferometers for m ...
Lesson 1 - primalight
... Energy flux of EM field, or equivalently, power density x unit area is direction of Energy density of the EM field ...
... Energy flux of EM field, or equivalently, power density x unit area is direction of Energy density of the EM field ...
Physics - Lop hoc vat ly
... dynamics of Aristotle: according to Aristotle there is only velocity if there is a force, but according to Newton an object with certain velocity maintains that velocity unless the force acts on it to cuase an acceleration. Newton’s third law can be stated as follows: For every action in nature ther ...
... dynamics of Aristotle: according to Aristotle there is only velocity if there is a force, but according to Newton an object with certain velocity maintains that velocity unless the force acts on it to cuase an acceleration. Newton’s third law can be stated as follows: For every action in nature ther ...
Optical Diffraction and Image Formation
... diffraction pattern from that slide, which corresponds to the intensities (= Amplitudes2) of the Fourier transformation of the slide image. If the slide, for example, shows some lines, then the distant wall will show the diffraction peaks from those lines. The Fraunhofer theory explains how that sha ...
... diffraction pattern from that slide, which corresponds to the intensities (= Amplitudes2) of the Fourier transformation of the slide image. If the slide, for example, shows some lines, then the distant wall will show the diffraction peaks from those lines. The Fraunhofer theory explains how that sha ...
Relating axial motion of optical elements to focal shift
... When designing and tolerancing an optical system, typically a full computer model of the system is created and a complete tolerance analysis is done. It is good practice to understand what the expected outcome of a simulation is before dedicating time to the endeavor. First order calculations, estim ...
... When designing and tolerancing an optical system, typically a full computer model of the system is created and a complete tolerance analysis is done. It is good practice to understand what the expected outcome of a simulation is before dedicating time to the endeavor. First order calculations, estim ...
Lenses, the eye and other applications of light
... On the diagram, draw lines to show how the light passes through each lens into the region within the dotted lines. ...
... On the diagram, draw lines to show how the light passes through each lens into the region within the dotted lines. ...
289-1028-1
... its optical and electrical properties . Much work has been done on the molecular design ,synthesis ,and assembly of structures with desired properties[1].Phenols resin are polymers used in a wide variety of application in different areas as the construction , electronic .. etc. [2].Some common uses ...
... its optical and electrical properties . Much work has been done on the molecular design ,synthesis ,and assembly of structures with desired properties[1].Phenols resin are polymers used in a wide variety of application in different areas as the construction , electronic .. etc. [2].Some common uses ...
Dynamic Simulation of Optical MEM Switches
... over typical waveguide or fiber switching systems, including a reduction of coupling loss and crosstalk, as well as being independent of wavelength, polarization, and data format [6]. The switches have been reported to be 10 times smaller and faster than typical fiber-based switches, while requiring ...
... over typical waveguide or fiber switching systems, including a reduction of coupling loss and crosstalk, as well as being independent of wavelength, polarization, and data format [6]. The switches have been reported to be 10 times smaller and faster than typical fiber-based switches, while requiring ...
document
... • Light sources send out light waves that travel in all directions. • These waves spread out from the light source just as ripples on the surface of water spread out from the point of impact of a pebble. ...
... • Light sources send out light waves that travel in all directions. • These waves spread out from the light source just as ripples on the surface of water spread out from the point of impact of a pebble. ...
Microscopy Basics
... Bright field microscopy is based on absorption of light in the sample. Most biological objects, however, absorb only weakly in the visible spectrum. This lead to: • Development of specific staining (nowadays almost entirely replaced by fluorescent labeling) • Development of UV microscopy (Köhler) fa ...
... Bright field microscopy is based on absorption of light in the sample. Most biological objects, however, absorb only weakly in the visible spectrum. This lead to: • Development of specific staining (nowadays almost entirely replaced by fluorescent labeling) • Development of UV microscopy (Köhler) fa ...
Optical properties of the human tissue
... This method includes inverse adding-doubling (IAD) method developed by Prahl et al (Prahl S.A., et al. // Appl. Opt., 1993, Vol. 32(4), P. 559-568) and inverse Monte Carlo simulations. The IAD method is widely used in tissue optics for processing the experimental data of spectrophotometry with integ ...
... This method includes inverse adding-doubling (IAD) method developed by Prahl et al (Prahl S.A., et al. // Appl. Opt., 1993, Vol. 32(4), P. 559-568) and inverse Monte Carlo simulations. The IAD method is widely used in tissue optics for processing the experimental data of spectrophotometry with integ ...
Four Aces of Refractive Surgery: Aberrations
... A Hartmann-Shack device uses a narrow laser beam that is sent along the ocular line of sight into the eye, where it reflects fromthe retina. This reflection serves as secondary source that illuminates the pupillary area from behind. When a plane or spherical wavefront is projected into a perfect opt ...
... A Hartmann-Shack device uses a narrow laser beam that is sent along the ocular line of sight into the eye, where it reflects fromthe retina. This reflection serves as secondary source that illuminates the pupillary area from behind. When a plane or spherical wavefront is projected into a perfect opt ...
