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Quantitative evaluation of light microscopes based on image
... and 700 nm (Andover Corporation, Salem, NH, USA). 3. Procedures In this section the variety of test procedures that use digital image processing techniques will be described and the results of these procedures applied to the different microscope systems will be shown. 3.1. Illumination calibration F ...
... and 700 nm (Andover Corporation, Salem, NH, USA). 3. Procedures In this section the variety of test procedures that use digital image processing techniques will be described and the results of these procedures applied to the different microscope systems will be shown. 3.1. Illumination calibration F ...
Materials and Components for Flat Panel Display
... offering a glass high-precision MLA for industrial optical equipment manufactured through a combination of resist reflow and dry etching processes. More recently, there has been an intense effort to apply MLAs to LCDs. For example, by installing MLAs directly above a liquid-crystal backlight unit th ...
... offering a glass high-precision MLA for industrial optical equipment manufactured through a combination of resist reflow and dry etching processes. More recently, there has been an intense effort to apply MLAs to LCDs. For example, by installing MLAs directly above a liquid-crystal backlight unit th ...
Microscope Project for Undergraduate Laboratories Abstract
... those components are often used in a condenser and can be added to alter the construction of the condenser (described below). Plano-convex and achromatic lenses of various focal lengths were purchased from ThorLabs or Edmund Optics to allow students to tinker with a different lenses. Extras lenses w ...
... those components are often used in a condenser and can be added to alter the construction of the condenser (described below). Plano-convex and achromatic lenses of various focal lengths were purchased from ThorLabs or Edmund Optics to allow students to tinker with a different lenses. Extras lenses w ...
12. CONFOCAL MICROSCOPY • Confocal microscopy can render
... The image is reconstructed serially, i.e. point by point, using a single photodetector, rather than in parallel (in bright field, phase contrast, etc.), where a 2D image is recorded via a detector array, such as a camera. The illumination light is focused down to a small spot at the sample plane ...
... The image is reconstructed serially, i.e. point by point, using a single photodetector, rather than in parallel (in bright field, phase contrast, etc.), where a 2D image is recorded via a detector array, such as a camera. The illumination light is focused down to a small spot at the sample plane ...
The Fundamentals of Infrared Spectroscopy
... some cases this involves breaking the light up into component wavelengths so that the sample is exposed to only a narrow region of the spectrum at any one time. In this form of infrared spectroscopy the wavelength of light incident on the detector at a given time is known. This is called DISPERSIVE ...
... some cases this involves breaking the light up into component wavelengths so that the sample is exposed to only a narrow region of the spectrum at any one time. In this form of infrared spectroscopy the wavelength of light incident on the detector at a given time is known. This is called DISPERSIVE ...
Geometric Optics
... If height is negative the image is upside down if the magnification is negative the image is inverted (upside down) J.M. Gabrielse ...
... If height is negative the image is upside down if the magnification is negative the image is inverted (upside down) J.M. Gabrielse ...
observing sunspots using a pinhole camera
... The resulting solar image was 24.1 centimeters in diameter. Noting several sunspots visible, I proceeded to trace their images onto the screen (This is much more difficult than it sounds since the Sun is a fast moving target, particularly at this projection size and no tracking involved. Several att ...
... The resulting solar image was 24.1 centimeters in diameter. Noting several sunspots visible, I proceeded to trace their images onto the screen (This is much more difficult than it sounds since the Sun is a fast moving target, particularly at this projection size and no tracking involved. Several att ...
Minimized speckle noise in lens-less holographic projection by pixel
... holographic projection provides stable images formed by strongly divergent wavefronts, which ensures a completely safe operation. From the point of view of energetic efficiency, the utilization of 8-bit addressable Spatial Light Modulators (SLM) based on the LCoS technology (Liquid Crystal on Silico ...
... holographic projection provides stable images formed by strongly divergent wavefronts, which ensures a completely safe operation. From the point of view of energetic efficiency, the utilization of 8-bit addressable Spatial Light Modulators (SLM) based on the LCoS technology (Liquid Crystal on Silico ...
Computational photography with plenoptic camera and light field
... the light field gives us at least three advantages over the traditional camera [7]: to reconstruct images with small viewpoint changes, to compute a depth map using depth from focus, and to reconstruct images as if they have been focused at different planes, thus achieving refocus after data capture ...
... the light field gives us at least three advantages over the traditional camera [7]: to reconstruct images with small viewpoint changes, to compute a depth map using depth from focus, and to reconstruct images as if they have been focused at different planes, thus achieving refocus after data capture ...
2 Modeling and Design of Lens Systems
... to a defocus but the lateral magnification of the image remains constant! Placing the stop in the front focal plane F would give an image side telecentric system. If one uses a 4f-set-up for the imaging and places the stop at the common intermediate focus the system becomes both side telecentric. ...
... to a defocus but the lateral magnification of the image remains constant! Placing the stop in the front focal plane F would give an image side telecentric system. If one uses a 4f-set-up for the imaging and places the stop at the common intermediate focus the system becomes both side telecentric. ...
A Carpet Cloak Device for Visible Light
... cloak device are shown in Figure 4 for three different excitation wavelengths of 480nm, 520nm, and 700nm. The 700nm beam is the direct output from the Ti-Sapphire laser, whereas the other two are the outputs of the second harmonic generation in the OPO, and thus the beam profiles are slightly differ ...
... cloak device are shown in Figure 4 for three different excitation wavelengths of 480nm, 520nm, and 700nm. The 700nm beam is the direct output from the Ti-Sapphire laser, whereas the other two are the outputs of the second harmonic generation in the OPO, and thus the beam profiles are slightly differ ...
... integration [4], non-inductivity to electromagnetic noise, low loss of transmitting signals [5]. In addition they are light weight, insulating characteristic, a wide optical signal band [6]. Furthermore considerable cost reduction is expected in constructing a communication system utilizing these op ...
TO THE POSSIBILITY OF CALCULATION
... reconstructed (spatially), it adds up in amplitude while the noise adds up in power (it is received in phase in all detectors), this allows a smaller SNR in each detector, therefore it can be simpler. Furthermore, spatial diversity also offers a second possibility. Given the fact that the informatio ...
... reconstructed (spatially), it adds up in amplitude while the noise adds up in power (it is received in phase in all detectors), this allows a smaller SNR in each detector, therefore it can be simpler. Furthermore, spatial diversity also offers a second possibility. Given the fact that the informatio ...
Yellow nanosecond sum-frequency generating optical
... copper vapour lasers at 578 nm and dye lasers operating at 585 nm and 595 nm. These lasers are both bulky and inefficient and it would be attractive to develop a solid-state alternative to these lasers. One path that has been followed for the generation of yellow light is second harmonic generation ...
... copper vapour lasers at 578 nm and dye lasers operating at 585 nm and 595 nm. These lasers are both bulky and inefficient and it would be attractive to develop a solid-state alternative to these lasers. One path that has been followed for the generation of yellow light is second harmonic generation ...
Spherical Mirrors
... source” at one end of the bench. The wall transformer should be plugged into the outlets on the sides of the bench, after connecting the power cord to the “object source”. The concave mirror should be located at a distance of do = (2f plus several centimeters) from the object. Notice that it is easi ...
... source” at one end of the bench. The wall transformer should be plugged into the outlets on the sides of the bench, after connecting the power cord to the “object source”. The concave mirror should be located at a distance of do = (2f plus several centimeters) from the object. Notice that it is easi ...
Single-frequency blue light generation by single-pass
... power allowing for higher circulating power compared to SHG where the losses are quadratic.14 The increased losses at high single-pass power will increase the coupling into the cavity as the input mirror M1 transmission ideally should match the losses in the cavity. Taking into account the losses in ...
... power allowing for higher circulating power compared to SHG where the losses are quadratic.14 The increased losses at high single-pass power will increase the coupling into the cavity as the input mirror M1 transmission ideally should match the losses in the cavity. Taking into account the losses in ...
Active Aperture Control and Sensor Modulation for Flexible Imaging
... However, pixel-level control cannot be achieved when placing the SLM in front of the camera due to the defocus blur caused by the filter mask. Because the blurred masks on the SLM overlap, a special control algorithm is required to find the optimal mask which can detect all the scene points. In cont ...
... However, pixel-level control cannot be achieved when placing the SLM in front of the camera due to the defocus blur caused by the filter mask. Because the blurred masks on the SLM overlap, a special control algorithm is required to find the optimal mask which can detect all the scene points. In cont ...
Pulse Testing for Nanoscale Devices
... voltage of the transistor increases due to the built-in voltage in the gate capacitor; therefore, the drain current decreases. Pulse testing can be one of two different types: voltage or current pulsing. Voltage pulsing produces much narrower pulse widths than current pulsing. This makes it more sui ...
... voltage of the transistor increases due to the built-in voltage in the gate capacitor; therefore, the drain current decreases. Pulse testing can be one of two different types: voltage or current pulsing. Voltage pulsing produces much narrower pulse widths than current pulsing. This makes it more sui ...
... the loop operates again in the linear region of a new S curve. The initial conditions (ICs) of the loop filter must be set by the TSL such that the loop will pass smoothly from the operation before switching to the operation after switching. Of course, some transients cannot be avoided. The switchin ...
Light Measurement Handbook
... they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially between the dark (zero) and light states. Quantum type detectors are ofte ...
... they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially between the dark (zero) and light states. Quantum type detectors are ofte ...
Low-Complexity Velocity Estimation in High
... We simulate IFD data that represents a blood vessel of 200 µm radius with its center in the center of the image. The image size is 100 × 100 pixels, with each pixel being 10 × 10 µm. All of the results are obtained using data simulated via the physical model in (1) and reconstructed via the AMFM mod ...
... We simulate IFD data that represents a blood vessel of 200 µm radius with its center in the center of the image. The image size is 100 × 100 pixels, with each pixel being 10 × 10 µm. All of the results are obtained using data simulated via the physical model in (1) and reconstructed via the AMFM mod ...
Night vision device
![](https://commons.wikimedia.org/wiki/Special:FilePath/PEO_ANAVS-6_NVG.jpg?width=300)
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.