Handbook of Optical Filters
... near-ultraviolet (near-UV) band from 320 to 400 nm, and on the long-wavelength end is the near-infrared (near-IR) band from 750 to approximately 2500 nm. The broad band of light from 320 to 2500 nm marks the limits of transparency of crown glass and window glass, and this is the band most often used ...
... near-ultraviolet (near-UV) band from 320 to 400 nm, and on the long-wavelength end is the near-infrared (near-IR) band from 750 to approximately 2500 nm. The broad band of light from 320 to 2500 nm marks the limits of transparency of crown glass and window glass, and this is the band most often used ...
Chapter 32 Optical Images
... (b) A concave mirror always forms a virtual image. (c) A convex mirror never forms a real image of a real object. (d) A concave mirror never forms an enlarged real image of an object. (a) False. The size of the virtual image formed by a concave mirror when the object is between the focal point and t ...
... (b) A concave mirror always forms a virtual image. (c) A convex mirror never forms a real image of a real object. (d) A concave mirror never forms an enlarged real image of an object. (a) False. The size of the virtual image formed by a concave mirror when the object is between the focal point and t ...
Liquid-crystal photonic applications
... CCD, for example, often consists of RGB pixels in a Bayer arrangement, with double the amount of green pixels, compared to red and blue. In hyperspectral imaging, the aim is to obtain images of a certain object for much more different wavelengths and each image should be related to only a small wave ...
... CCD, for example, often consists of RGB pixels in a Bayer arrangement, with double the amount of green pixels, compared to red and blue. In hyperspectral imaging, the aim is to obtain images of a certain object for much more different wavelengths and each image should be related to only a small wave ...
Design, fabrication and testing of microlens arrays for sensors and
... always act like a microlens. Nevertheless, it is not trivial to fabricate microlenses with good optical performance. The difference between a suitable lens profile and an unacceptable profile is only a fraction of a wavelength. Thus, careful optimization of all processing steps is necessary. During ...
... always act like a microlens. Nevertheless, it is not trivial to fabricate microlenses with good optical performance. The difference between a suitable lens profile and an unacceptable profile is only a fraction of a wavelength. Thus, careful optimization of all processing steps is necessary. During ...
Optical and acoustic beam shaping for imaging and
... graduate study. It has been a great pleasure and honour to work with all of them. First, I would like to thank my supervisor, Mike MacDonald. From my first visit to Institute of Medical Science and Technology (IMSaT) in September 2010, I knew this would be where I want to perform research. Mike has ...
... graduate study. It has been a great pleasure and honour to work with all of them. First, I would like to thank my supervisor, Mike MacDonald. From my first visit to Institute of Medical Science and Technology (IMSaT) in September 2010, I knew this would be where I want to perform research. Mike has ...
Gradient Index Optics at DARPA - Institute for Defense Analyses
... Defense Analyses (IDA) to assemble a summary of work on gradient index optics completed under funding from the Agency. The purpose was to archive the efforts, motivation, and accomplishments that the Agency supported and to provide a reference for any future programs that explore this new area of op ...
... Defense Analyses (IDA) to assemble a summary of work on gradient index optics completed under funding from the Agency. The purpose was to archive the efforts, motivation, and accomplishments that the Agency supported and to provide a reference for any future programs that explore this new area of op ...
Analysis And Design Of Wide-angle Foveated Optical
... Figure 3: The human eye [2]. ............................................................................................ 10 Figure 4: Cone and rod density versus angular field [4]. .................................................. 11 Figure 5: The SLM corrects the wavefront aberration at the fie ...
... Figure 3: The human eye [2]. ............................................................................................ 10 Figure 4: Cone and rod density versus angular field [4]. .................................................. 11 Figure 5: The SLM corrects the wavefront aberration at the fie ...
Lithography Lecture #1
... • Tools check for design rule violations • Circuit and system level simulation tools predict performance • Information from design transferred to mask making machine and pattern written on a mask blank using scanning electron or laser beam 6.152J / 3.155J Spring Term 2005 ...
... • Tools check for design rule violations • Circuit and system level simulation tools predict performance • Information from design transferred to mask making machine and pattern written on a mask blank using scanning electron or laser beam 6.152J / 3.155J Spring Term 2005 ...
Chapter 30 The Law of Reflection
... light travels in a straight line. The wavelength of light is so small that in a relatively short distance away from the point source of light, the waves appear plane. Even if the source of light is not a point, when we are sufficiently far away from the source, the waves are effectively plane. In al ...
... light travels in a straight line. The wavelength of light is so small that in a relatively short distance away from the point source of light, the waves appear plane. Even if the source of light is not a point, when we are sufficiently far away from the source, the waves are effectively plane. In al ...
Photocells
... Photocells are sensors that allow you to detect light. They are small, inexpensive, lowpower, easy to use and don't wear out. For that reason they often appear in toys, gadgets and appliances. They are often referred to as CdS cells (they are made of CadmiumSulfide), light-dependent resistors (LDR), ...
... Photocells are sensors that allow you to detect light. They are small, inexpensive, lowpower, easy to use and don't wear out. For that reason they often appear in toys, gadgets and appliances. They are often referred to as CdS cells (they are made of CadmiumSulfide), light-dependent resistors (LDR), ...
Reference Guide to Fiber Optic Testing Glossary Reference Guide to Fib
... (2) Stimulated emission is the process by which, when perturbed by a photon, matter may lose energy resulting in the creation of another photon. The perturbing photon is not destroyed in the process, and the second photon is created with the same phase, frequency, polarization, and direction of trav ...
... (2) Stimulated emission is the process by which, when perturbed by a photon, matter may lose energy resulting in the creation of another photon. The perturbing photon is not destroyed in the process, and the second photon is created with the same phase, frequency, polarization, and direction of trav ...
ELEC425 lab 5
... cascading of several filters and this would greatly increase the losses in the device. WDM's of this type generally use a prism or a grating. A design for a five-channel WDM using a quarter-pitch GRIN-rod lens and a reflective diffraction grating is shown in Fig. 5.3. WDM devices of this type allow ...
... cascading of several filters and this would greatly increase the losses in the device. WDM's of this type generally use a prism or a grating. A design for a five-channel WDM using a quarter-pitch GRIN-rod lens and a reflective diffraction grating is shown in Fig. 5.3. WDM devices of this type allow ...
Polarization of Light - University of Hawaii
... • In retarders, one polarization gets ‘retarded’, or delayed, with respect to the other one. There is a final phase difference between the 2 components of the polarization. Therefore, the polarization is changed. • Most retarders are based on birefringent materials (quartz, mica, polymers) that have ...
... • In retarders, one polarization gets ‘retarded’, or delayed, with respect to the other one. There is a final phase difference between the 2 components of the polarization. Therefore, the polarization is changed. • Most retarders are based on birefringent materials (quartz, mica, polymers) that have ...
Graphene Field-Effect Transistors with High On/Off Current Ratio
... can be inferred using the off-current at each charge-neutrality condition in each curve. The results are plotted in the inset of Figure 2a as a function of the average electrical displacement, Dave.6 At the charge-neutrality condition, D ≈ εSiO2(Vbg - Vbg0)/dSiO2, where εSiO2 (∼3.9) is the dielectri ...
... can be inferred using the off-current at each charge-neutrality condition in each curve. The results are plotted in the inset of Figure 2a as a function of the average electrical displacement, Dave.6 At the charge-neutrality condition, D ≈ εSiO2(Vbg - Vbg0)/dSiO2, where εSiO2 (∼3.9) is the dielectri ...
Advance Program Sunday, October 12, 2014 Sunday Session
... Biomedical Imaging, M. A. Choma, Yale University, USA The spatial and temporal coherence of optical fields are basic properties that have been successfully exploited in biomedical optics. I will discuss our biomedical use of optical coherence tomography and our work in the targeted design of desirab ...
... Biomedical Imaging, M. A. Choma, Yale University, USA The spatial and temporal coherence of optical fields are basic properties that have been successfully exploited in biomedical optics. I will discuss our biomedical use of optical coherence tomography and our work in the targeted design of desirab ...
PWA_Mod04_Prob05_v05
... connected to an ideal voltmeter, as shown in Figure to model the device. Once we have the Norton equivalent, it will be 1, the voltmeter reads vX = 11.4[V]. When this easy to find the voltage across a same device is disconnected from the voltmeter, 50[W] resistor attached to the and connected to an ...
... connected to an ideal voltmeter, as shown in Figure to model the device. Once we have the Norton equivalent, it will be 1, the voltmeter reads vX = 11.4[V]. When this easy to find the voltage across a same device is disconnected from the voltmeter, 50[W] resistor attached to the and connected to an ...
Module P6.3 Optical elements: prisms, lenses and spherical mirrors
... You will probably be familiar with the action of a prism in splitting white light into the colours of the rainbow, or of a simple magnifying lens, or of the curved reflectors used in vanity mirrors, shaving mirrors and driving mirrors. This module describes these optical elements and introduces you ...
... You will probably be familiar with the action of a prism in splitting white light into the colours of the rainbow, or of a simple magnifying lens, or of the curved reflectors used in vanity mirrors, shaving mirrors and driving mirrors. This module describes these optical elements and introduces you ...
to Thin Section Microscopy - Mineralogical Society of America
... This guide is based on a previously published text that has been widely used in the Germanspeaking world, but is now out of print: “Methoden der Dünnschliffmikroskopie” by G. Müller and M. Raith (Clausthaler Tektonische Hefte, vol.14). We adopted this text to a large degree, revising the figures usi ...
... This guide is based on a previously published text that has been widely used in the Germanspeaking world, but is now out of print: “Methoden der Dünnschliffmikroskopie” by G. Müller and M. Raith (Clausthaler Tektonische Hefte, vol.14). We adopted this text to a large degree, revising the figures usi ...
Achromatic correction of diffractive dispersion in white light SLM
... a mutual elimination of the material dispersion of the corrector and the diffractive dispersion of the SLM. Even in a cooperation with the corrector, the SLM works as an independent device. Its initial operation is maintained for the central wavelength, and only other spectral components are influen ...
... a mutual elimination of the material dispersion of the corrector and the diffractive dispersion of the SLM. Even in a cooperation with the corrector, the SLM works as an independent device. Its initial operation is maintained for the central wavelength, and only other spectral components are influen ...
de Sénarmont Bias Retardation in DIC Microscopy Introduction
... This effect occurs because shear takes place at the quartzair interface in the lower prism wedge instead at the cemented boundary, as in a Wollaston prism. Refraction at the interface between the quartz wedges in a Nomarski prism causes the sheared wavefronts to converge with a crossover point outsi ...
... This effect occurs because shear takes place at the quartzair interface in the lower prism wedge instead at the cemented boundary, as in a Wollaston prism. Refraction at the interface between the quartz wedges in a Nomarski prism causes the sheared wavefronts to converge with a crossover point outsi ...
Optical coherence tomography (OCT): a review
... reach of conventional bright-field and confocal microscopes. Probing depths exceeding 2 cm have been demonstrated in transparent tissues, including the eye and the frog embryo [13], [14]. In the skin and other highly scattering tissues, OCT can image small blood vessels and other structures as deep ...
... reach of conventional bright-field and confocal microscopes. Probing depths exceeding 2 cm have been demonstrated in transparent tissues, including the eye and the frog embryo [13], [14]. In the skin and other highly scattering tissues, OCT can image small blood vessels and other structures as deep ...
Polarization of Light: from Basics to Instruments
... • In retarders, one polarization gets ‘retarded’, or delayed, with respect to the other one. There is a final phase difference between the 2 components of the polarization. Therefore, the polarization is changed. • Most retarders are based on birefringent materials (quartz, mica, polymers) that have ...
... • In retarders, one polarization gets ‘retarded’, or delayed, with respect to the other one. There is a final phase difference between the 2 components of the polarization. Therefore, the polarization is changed. • Most retarders are based on birefringent materials (quartz, mica, polymers) that have ...
OPTI 517 Image Quality
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
Diffuse optical imaging
... Despite the relative lack of success of transillumination, optical techniques were making an impact in blood oximetry, which takes advantage of the different absorption spectra of oxy- and deoxyhaemoglobin (HbO and HHb, respectively) to assess blood oxygenation. This demonstrated that biomedical opt ...
... Despite the relative lack of success of transillumination, optical techniques were making an impact in blood oximetry, which takes advantage of the different absorption spectra of oxy- and deoxyhaemoglobin (HbO and HHb, respectively) to assess blood oxygenation. This demonstrated that biomedical opt ...
The Sampling Pattern Cube
... Cameras have changed the way we live today. They are integrated into many devices ranging from tablets and mobile phones to vehicles. Digital cameras have become a part of our everyday life aided by the rapidly developing technology; these handy devices are becoming cheaper and are providing even mo ...
... Cameras have changed the way we live today. They are integrated into many devices ranging from tablets and mobile phones to vehicles. Digital cameras have become a part of our everyday life aided by the rapidly developing technology; these handy devices are becoming cheaper and are providing even mo ...
Night vision device
A night vision device (NVD) is an optoelectronic device that allows images to be produced in levels of light approaching total darkness. The image may be a conversion to visible light of both visible light and near-infrared, while by convention detection of thermal infrared is denoted thermal imaging. The image produced is typically monochrome, e.g. shades of green. NVDs are most often used by the military and law enforcement agencies, but are available to civilian users. The term usually refers to a complete unit, including an image intensifier tube, a protective and generally water-resistant housing, and some type of mounting system. Many NVDs also include optical components such as a sacrificial lens, or telescopic lenses or mirrors. An NVD may have an IR illuminator, making it an active as opposed to passive night vision device.Night vision devices were first used in World War II, and came into wide use during the Vietnam War. The technology has evolved greatly since their introduction, leading to several ""generations"" of night vision equipment with performance increasing and price decreasing. Consequently, they are available for a wide range of applications, e.g. for gunners, drivers and aviators. Another term is ""night optical/observation device"" or NOD.