Colours of opaque object - PRADEEP KSHETRAPAL PHYSICS
... A watch shows time as 3 : 25 when seen through a mirror, time appeared will be [RPMT 1997; JIPMER 2001, 2002] ...
... A watch shows time as 3 : 25 when seen through a mirror, time appeared will be [RPMT 1997; JIPMER 2001, 2002] ...
Module P6.3 Optical elements: prisms, lenses and spherical mirrors
... mirrors. This module describes these optical elements and introduces you to the equations which govern their operation and which can be used in their design. The operation of all these optical elements depends on the known behaviour of light rays when reflected from mirrors or refracted at the bound ...
... mirrors. This module describes these optical elements and introduces you to the equations which govern their operation and which can be used in their design. The operation of all these optical elements depends on the known behaviour of light rays when reflected from mirrors or refracted at the bound ...
Color-changing and color-tunable photonic bandgap fiber textiles
... applications [12, 13]. To implement such emissive textiles one typically uses common silica [10] or plastic [14] optical fibers in which light extraction is achieved through corrugation of the fiber surface, or through fiber microbending. Moreover, specialty fibers have been demonstrated capable of ...
... applications [12, 13]. To implement such emissive textiles one typically uses common silica [10] or plastic [14] optical fibers in which light extraction is achieved through corrugation of the fiber surface, or through fiber microbending. Moreover, specialty fibers have been demonstrated capable of ...
Optical Fabrication - University of Arizona
... Most optical fabrication processes begin with the extremely important consideration of holding onto the part during subsequent fabrication steps. Numerous factors must be considered when choosing the support method: part size, thickness, shape, expansion coefficient, and the direction and magnitude ...
... Most optical fabrication processes begin with the extremely important consideration of holding onto the part during subsequent fabrication steps. Numerous factors must be considered when choosing the support method: part size, thickness, shape, expansion coefficient, and the direction and magnitude ...
Chapter 30 The Law of Reflection
... That is, the focal length of a concave spherical mirror is equal to one-half the radius of curvature of the mirror. (Remember that, in this derivation we assumed that the incident ray was relatively close to the principal axis. If the width of the mirror is comparable to its radius of curvature, all ...
... That is, the focal length of a concave spherical mirror is equal to one-half the radius of curvature of the mirror. (Remember that, in this derivation we assumed that the incident ray was relatively close to the principal axis. If the width of the mirror is comparable to its radius of curvature, all ...
technical paper
... only be modified by polishing or roughening. For very thin layers (thin films for example) internal reflection effects can cause the reflectance to vary with layer thickness. Thin films are applied to a surface to change color, enhance reflectance, reduce reflectance or change polarization. The most ...
... only be modified by polishing or roughening. For very thin layers (thin films for example) internal reflection effects can cause the reflectance to vary with layer thickness. Thin films are applied to a surface to change color, enhance reflectance, reduce reflectance or change polarization. The most ...
Fabrication of concave silicon micro-mirrors
... irradiating annular patterns, lines are irradiated instead (Fig. 1f). Concave mirrors and cylinders with two different diameters, D = 20µm and D = 100µm, were fabricated here. After irradiation, the photoresist was removed with Nano StripTM (Cyantek Inc) and the wafer electrochemically etched at 70m ...
... irradiating annular patterns, lines are irradiated instead (Fig. 1f). Concave mirrors and cylinders with two different diameters, D = 20µm and D = 100µm, were fabricated here. After irradiation, the photoresist was removed with Nano StripTM (Cyantek Inc) and the wafer electrochemically etched at 70m ...
Recent advances in transformation optics
... Industrial Engineering. Dr. Liu’s research interests include nanoscale materials and engineering, nano photonics, nano and quantum optics of metallic ...
... Industrial Engineering. Dr. Liu’s research interests include nanoscale materials and engineering, nano photonics, nano and quantum optics of metallic ...
Recent advances in transformation optics
... Industrial Engineering. Dr. Liu’s research interests include nanoscale materials and engineering, nano photonics, nano and quantum optics of metallic ...
... Industrial Engineering. Dr. Liu’s research interests include nanoscale materials and engineering, nano photonics, nano and quantum optics of metallic ...
Full-Text PDF
... or functions using fluid interfaces. Later on, the advancements of microelectromechanical system (MEMS) and microfluidic technologies enabled the realization of optofluidic components through the precise manipulation of fluids at microscale thus making it possible to streamline complex fabrication p ...
... or functions using fluid interfaces. Later on, the advancements of microelectromechanical system (MEMS) and microfluidic technologies enabled the realization of optofluidic components through the precise manipulation of fluids at microscale thus making it possible to streamline complex fabrication p ...
1.5 MB
... system for measuring the light polarization state [16, 17] as well as to the idea of a system for measuring the vortex sign, which is a subject of this paper. Our optical system consists of a Wollaston prism working between the polarizer and the analyzer (Fig. 5). The measured light beam enters the ...
... system for measuring the light polarization state [16, 17] as well as to the idea of a system for measuring the vortex sign, which is a subject of this paper. Our optical system consists of a Wollaston prism working between the polarizer and the analyzer (Fig. 5). The measured light beam enters the ...
1 Fundamental Optics www.cvimellesgriot.com
... length(s), clear aperture (diameter), and object and image position. These paraxial calculations are covered in the next section of this chapter. Second, actual components are chosen based on these paraxial values, and their actual performance is evaluated with special attention paid to the effects ...
... length(s), clear aperture (diameter), and object and image position. These paraxial calculations are covered in the next section of this chapter. Second, actual components are chosen based on these paraxial values, and their actual performance is evaluated with special attention paid to the effects ...
Optical Resonators and Mode Matching
... variously called an optical resonator, an optical cavity, and in certain contexts, an optical interferometer. Optical resonator along with optical gain are the basic elements of every laser, optical resonators are used in sensors such as the laser gyroscope, and they are used extensively in optical ...
... variously called an optical resonator, an optical cavity, and in certain contexts, an optical interferometer. Optical resonator along with optical gain are the basic elements of every laser, optical resonators are used in sensors such as the laser gyroscope, and they are used extensively in optical ...
A simple peak-to-average power ratio reduction
... nonlinear impairment in optical fibers. However, hardly any investigations are centered on the PAPR characteristics in all optical OFDM systems. This paper studies the fundamental PAPR theory in all optical OFDM systems and illustrates the differences of PAPR characteristics between conventional opt ...
... nonlinear impairment in optical fibers. However, hardly any investigations are centered on the PAPR characteristics in all optical OFDM systems. This paper studies the fundamental PAPR theory in all optical OFDM systems and illustrates the differences of PAPR characteristics between conventional opt ...
MEMS mirrors - Hamamatsu Photonics
... the maximum optical deflection angle is reached before the drive current reaches its absolute maximum rating. The drive current must not be increased to its absolute maximum rating. The magnitude of the drive current must be observed carefully so that the maximum optical deflection angle is not exce ...
... the maximum optical deflection angle is reached before the drive current reaches its absolute maximum rating. The drive current must not be increased to its absolute maximum rating. The magnitude of the drive current must be observed carefully so that the maximum optical deflection angle is not exce ...
The Microscope in a Computer: Image Synthesis from Three
... constant phase are all perpendicular to the direction of propagation k̂i. The electric and magnetic field vectors of the plane wave are perpendicular to each other and k̂i. Individually, the plane wave can approximate a more complicated coherent illumination scheme over a very small illumination ang ...
... constant phase are all perpendicular to the direction of propagation k̂i. The electric and magnetic field vectors of the plane wave are perpendicular to each other and k̂i. Individually, the plane wave can approximate a more complicated coherent illumination scheme over a very small illumination ang ...
Lights, action: optical tweezers
... 160 mm above the rear shoulder of the objective housing. Such designs are extremely convenient in that the only ...
... 160 mm above the rear shoulder of the objective housing. Such designs are extremely convenient in that the only ...
Development and Characterization of a 300mm Dual
... optical design. A shorter illumination wavelength allows higher optical resolution, but the wavelength must be long enough to transmit efficiently through silicon. The illumination bandwidth must be chosen carefully to efficiently illuminate the wafer target. This is because the illumination light r ...
... optical design. A shorter illumination wavelength allows higher optical resolution, but the wavelength must be long enough to transmit efficiently through silicon. The illumination bandwidth must be chosen carefully to efficiently illuminate the wafer target. This is because the illumination light r ...
Wavefront Aberrations
... In the paraxial approximation, we keep just the first term on the right hand side. Seidel aberrations result from the third-order (3) term. Seidel Snell’s Law: n1( 3/3!) ≈ n2( 3/3!) In fact, an exact analysis of all aberrations can be done by not using any approximations, following a ...
... In the paraxial approximation, we keep just the first term on the right hand side. Seidel aberrations result from the third-order (3) term. Seidel Snell’s Law: n1( 3/3!) ≈ n2( 3/3!) In fact, an exact analysis of all aberrations can be done by not using any approximations, following a ...
Reflector sight
A reflector sight or reflex sight is an optical device that allows the user to look through a partially reflecting glass element and see an illuminated projection of an aiming point or some other image superimposed on the field of view. These sights work on the simple optical principle that anything at the focus of a lens or curved mirror (such as an illuminated reticle) will look like it is sitting in front of the viewer at infinity. Reflector sights employ some sort of ""reflector"" to allow the viewer to see the infinity image and the field of view at the same time, either by bouncing the image created by lens off a slanted glass plate, or by using a mostly clear curved glass reflector that images the reticle while the viewer looks through the reflector. Since the reticle is at infinity it stays in alignment with the device the sight is attached to regardless of the viewer's eye position, removing most of the parallax and other sighting errors found in simple sighting devices.Since their invention in 1900, reflector sights have come to be used as gun sights on all kinds of weapons. They were used on fighter aircraft, in a limited capacity in World War I, widely used in World War II, and still used as the base component in many types of modern head-up displays. They have been used in other types of (usually large) weapons as well, such as anti-aircraft gun sights, anti tank gun sights, and any other role where the operator had to engage fast moving targets over a wide field of view, and the sight itself could be supplied with sufficient electrical power to function. There was some limited use of the sight on small arms after World War II but it came into widespread use after the late 70s with the invention of the red dot sight, with a red light-emitting diode (LED) as its reticle, making a dependable sight with durability and extremely long illumination run time.Reflector sights are also used in civilian applications such as sights on surveying equipment, optical telescope pointing aids, and camera viewfinders.