Experience with optical partial discharge detection M. M ,
... the UV region. In this wavelength range, the UV radiation of the sun is absorbed perfectly by the ozone layer before reaching the earth. Due to this particularly developed filter, those UV rays can be produced by fires or electrical discharges also by day without the sunlight. The camera has two rep ...
... the UV region. In this wavelength range, the UV radiation of the sun is absorbed perfectly by the ozone layer before reaching the earth. Due to this particularly developed filter, those UV rays can be produced by fires or electrical discharges also by day without the sunlight. The camera has two rep ...
The Dizzying Depths of the Cylindrical Mirror
... lines and the eye determines the direction in which the likeness is viewed. This is shown in Fig. 3 for two eyes in different locations. Unlike an image in which a point of an object is mapped to a single point, the likeness cannot be considered to have a fixed location. As an observer moves left or ...
... lines and the eye determines the direction in which the likeness is viewed. This is shown in Fig. 3 for two eyes in different locations. Unlike an image in which a point of an object is mapped to a single point, the likeness cannot be considered to have a fixed location. As an observer moves left or ...
Statistical Mechanics
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
- Free Documents
... Optical Concepts .The Optical Fiber Very thin strands of pure silica glass through which laser light travels in optical networks . ...
... Optical Concepts .The Optical Fiber Very thin strands of pure silica glass through which laser light travels in optical networks . ...
Tutorial on Optomechanical Beam Steering Mechanisms
... prism will be described and compared. Spatial light modulators, acoustooptical and electrooptical deflectors and other diffraction based devices will not be considered in detail, because with the exception of micro opto electro mechanical (MOEM) chips they tend to be less optomechanically intensive. ...
... prism will be described and compared. Spatial light modulators, acoustooptical and electrooptical deflectors and other diffraction based devices will not be considered in detail, because with the exception of micro opto electro mechanical (MOEM) chips they tend to be less optomechanically intensive. ...
Observational Astronomy
... in alt-azimuth mount the support force passes precisely through the gravity center thus canceling any torque: very important for large and heavy telescopes FoV behavior while tracking In any focus located on the tube of an equatorially mounted telescope the field of view does not rotate ESO 3.6m La ...
... in alt-azimuth mount the support force passes precisely through the gravity center thus canceling any torque: very important for large and heavy telescopes FoV behavior while tracking In any focus located on the tube of an equatorially mounted telescope the field of view does not rotate ESO 3.6m La ...
Spartan Infrared Camera High Resolution Imaging for the SOAR Telescope atmospheric turbulence
... Thermal reflector reduces load by 0.34. Total heat load of 1000x700x400mm cryogenic box is designed to be 6W. (3L/day of N2) ...
... Thermal reflector reduces load by 0.34. Total heat load of 1000x700x400mm cryogenic box is designed to be 6W. (3L/day of N2) ...
PII: 0030-4018(95)00743-1
... and r = 1. Since the MI gain is symmetric with respect to p, only the positive p-branch is plotted. Moreover, it is important to note that the dimensioneless ratio p/k represents the angle (in radians) at which the plane-wave components of the E(X, z> perturbation propagate with respect to the quasi ...
... and r = 1. Since the MI gain is symmetric with respect to p, only the positive p-branch is plotted. Moreover, it is important to note that the dimensioneless ratio p/k represents the angle (in radians) at which the plane-wave components of the E(X, z> perturbation propagate with respect to the quasi ...
Technical Article
... In order to verify this SD-OCT sensitivity analysis, we constructed differential SS-OCT and FD-OCT systems. The SS-OCT setup is in Fig. 1(a). This differential interferometer topology allows for the cancellation of DC, excess noise, and autocorrelation terms which otherwise contaminate SD-OCT images ...
... In order to verify this SD-OCT sensitivity analysis, we constructed differential SS-OCT and FD-OCT systems. The SS-OCT setup is in Fig. 1(a). This differential interferometer topology allows for the cancellation of DC, excess noise, and autocorrelation terms which otherwise contaminate SD-OCT images ...
Top downloaded Optics Express article for March.
... correlator architecture. We also extend the method to multiplex several movies in a single package. We use a Mach-Zehnder interferometer to encrypt experimentally each movie. One arm of the interferometer is the... ...
... correlator architecture. We also extend the method to multiplex several movies in a single package. We use a Mach-Zehnder interferometer to encrypt experimentally each movie. One arm of the interferometer is the... ...
FIBERTech RoMack New Fiber Optic Switch
... sensors, testing of fiber optical cables and environmental trace analysis. Our fiber optic switches are based on a patented micromechanical / micro‐optical design. This guarantees exceptional properties, significant flexibility and maximum long‐term stability for many applications. ...
... sensors, testing of fiber optical cables and environmental trace analysis. Our fiber optic switches are based on a patented micromechanical / micro‐optical design. This guarantees exceptional properties, significant flexibility and maximum long‐term stability for many applications. ...
adequate designs, even though these design adequacies were
... environmental loads is essential to minimise any reduction in MTF. Such a situation may occur due to thermally induced radial clamping of the lens under a temperature drop - leading to a change in the lens surface curvatures. On a larger scale, the reduction in boresight stability' of an entire opti ...
... environmental loads is essential to minimise any reduction in MTF. Such a situation may occur due to thermally induced radial clamping of the lens under a temperature drop - leading to a change in the lens surface curvatures. On a larger scale, the reduction in boresight stability' of an entire opti ...
Structure of Optical Vortices
... mounted in a Zeiss Axiovert S100TV inverted optical microscope. The objective lens focuses the light into optical traps, in this case a single optical vortex. The same lens also forms images of trapped particles that are relayed to an attached video camera through a dichroic mirror. The SLM can shif ...
... mounted in a Zeiss Axiovert S100TV inverted optical microscope. The objective lens focuses the light into optical traps, in this case a single optical vortex. The same lens also forms images of trapped particles that are relayed to an attached video camera through a dichroic mirror. The SLM can shif ...
optical fibres
... Only one light wave can fit inside the inner core at one time. An impulse of light travels through the high refractive index material centre. Because there is no interference with other waves and the light contained inside the core cannot spread out due to the size of the core, the quality of the in ...
... Only one light wave can fit inside the inner core at one time. An impulse of light travels through the high refractive index material centre. Because there is no interference with other waves and the light contained inside the core cannot spread out due to the size of the core, the quality of the in ...
Interferometer design for writing Bragg gratings in optical fibers
... the target or the phase mask angle about the y axis to bring these two components into optical alignment. This alignment is important for maintaining proper focus over the entire length of the target. The remaining positions and angles of the components can initially aligned “at the factory”, so to ...
... the target or the phase mask angle about the y axis to bring these two components into optical alignment. This alignment is important for maintaining proper focus over the entire length of the target. The remaining positions and angles of the components can initially aligned “at the factory”, so to ...
Eye Box Performance Parameters for Non Pupil Forming Head
... and optics to create a virtual image of the display at a comfortable viewing distance magnified to an appropriate size. These types of devices have been in use in the medical community, simulators, and military applications and several products have been developed recently to target commercial sales ...
... and optics to create a virtual image of the display at a comfortable viewing distance magnified to an appropriate size. These types of devices have been in use in the medical community, simulators, and military applications and several products have been developed recently to target commercial sales ...
Lecture 02
... 1. Ray through center of lens is straight 2. Light rays that enter the lens parallel to the optical axis leaves through Focal Point 3. Light rays that enter the lens from the focal point, exit parallel to the optical axis. ...
... 1. Ray through center of lens is straight 2. Light rays that enter the lens parallel to the optical axis leaves through Focal Point 3. Light rays that enter the lens from the focal point, exit parallel to the optical axis. ...
The interference characteristics of light
... to the direction of the incidence light [8], so it is a cooperative target in application. But the cat-eye optical lens is a non-cooperative target whose parameters are unknown. By using the active laser detection technique based on the theory of cat-eye effect of optical lens, a much larger detecti ...
... to the direction of the incidence light [8], so it is a cooperative target in application. But the cat-eye optical lens is a non-cooperative target whose parameters are unknown. By using the active laser detection technique based on the theory of cat-eye effect of optical lens, a much larger detecti ...
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.