An off-axis mirror is made for a certain angle of incidence of the central portion of the beam, and will work well only for angles close to that value. It is thus also very important to be sure whether the specified angle of operation is the angle of incidence (for the beam center) or rather the angle between input and output beam, which is twice that angle of incidence.

What Is FOV? The basic FOV meaning is a field of view. This is the area of the game that is visible to players. A FOV is measured by horizontal and vertical ...

Data Glitch is all about the modern day compression glitch artifacts. It creates awesome realistic digital image glitches with total ease. Something you would see during a satellite transmission or a cable broadcast or from a damaged disk. Bad TV plugin is great for analog TV look, but in the modern day you hardly see anything that's analog anymore. This plugin simulates a realistic digital glitch effect. In real-life most of the glitches occur due to problems in encoding/decoding and sometimes data corruption. This plugin does exactly that. It encodes the data, glitches the data and then decodes it similar to the real life situation.

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Avantier designs and produces off-axis parabolic mirrors, both standard and customized, to meet the needs of companies and institutions worldwide. Reach out to us to receive a complimentary quote.

TV Distortion Bundle plug-ins are compatible with Adobe After Effects and Adobe Premiere Pro CS6 and Creative Cloud (All Versions) on both Windows 10 and above and mac OS 10.13 (Intel and Apple Silicon) and above.

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SMIATV distortion

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While some parabolic mirrors are broadband metal-coated first surface mirrors (e.g. with protected aluminum or gold coating), which often exhibit too high reflection losses for use as laser mirrors, others are made with dielectric coatings. Typically, these are highly reflecting (HR) coatings, which often need to be designed for a relatively large range of angles of incidence. The surface quality of such parabolic laser mirrors is often particularly high – substantially higher than e.g. mirrors for lighting applications.

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Material : Aluminum Diameter tolerance : +0, -0.2mm Focal length tolerance : ± 1 % Off-axis distance tolerance : +6, -0mm Surface accuracy : 1/10 lambda RMS Surface Quality : 60-40

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As parabolic mirrors are often used in conjunction with highly divergent (or convergent) beams, their performance can often not be accurately calculated with simplified numerical computation methods, e.g. using the paraxial approximation. One should then use a full vector code, not representing light fields as scalar fields, but as full vector fields. One can then also check the possibly significant effect of the polarization of the light.

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TV Distortion Bundle is a collection of five distortion plug-ins for After Effects and Premiere which help digital media artists create Analog Distortion, Digital Image & Satellite Distortion, Digital Pixel Simulation and Chromatic Aberration with ease. In other words you can simulate TV watching experience from the analog era to the current digital compression era.

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Edmund Optics offers various kinds of off-axis parabolic mirrors, where the mirror coatings can be made of aluminum, silver or gold. Mirrors with alignment holes are also available.

A special property of the parabolic shape is that incoming parallel rays are all reflected into the same focal point, as is shown in Figure 1. This would not work for a mirror with spherical shape, which would exhibit so-called spherical aberrations. Parabolic mirrors can be considered as aspheric optics, i.e., optics with a non-spherical shape. (Their radius of curvature gets longer outside the center.) They are also achromatic (like most other mirrors) because in contrast to lenses their operation principle does not involve refraction.

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Due to the mentioned asymmetry, it is obviously important but more challenging to properly align an off-axis reflector to the incoming beam – particularly in cases where it is difficult to measure the precise intensity profile in the focus. It may be helpful to have a shape of the mirror substrate and/or the mirror holder which clearly identifies the direction of the optical axis – for example, with a flat base which is perpendicular to the required beam direction. If the input beam deviates from that direction, there will be distortions in the form of comatic aberrations.

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Typically, one uses parabolic mirrors in situations where one either needs to tightly focus a collimated beam or to collimate a tightly focused beam, where the beam divergence is strong in the focus. For example, this can be necessary for high harmonic generation, laser material processing, supercontinuum generation without waveguides, where extreme optical intensities are required, and for fluorescence microscopy. Frequently, off-axis parabolic mirrors are required for such applications.

There are also cases where the beam divergence is small, but a mirror must be used far away from its center. For example, pump radiation in thin-disk lasers is often redirected with a parabolic mirror in conjunction with prism retroreflectors. Also, parabolic reflectors are often used in telescopes, laser scanner systems, spectrometers and lighting.

May 14, 2021 — You can't watch a polarization-type 3D movie on a computer, because the polarization-specific display just adds a horizontal and horizontal ...

This plug-in lets you pixelate your image into circles and rings. Highly useful to create LED screen effect or a porous surface effect. Can also be used to create new abstract, artistic version of images and footage. It has optional shading that helps you to simulate spherical and torus objects.

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Various applications need parabolic mirrors as custom optics, since in comparison to ordinary spherical mirrors there are more essential device parameters, making it difficult to obtain from-stock mirrors which are satisfactory for an application in all respects. Besides the properties of the reflecting surface, the geometric shape of the substrate can be important.

Although ray optics, neglecting the wave nature of light, cannot fully describe light propagation, it correctly suggests that parabolic mirrors are best suited for precisely focusing collimated beams – not only within the paraxial approximation (considering only beams close to the center). Similarly, parabolic reflectors are best suited for collimating tightly focused beams. With them, one can achieve substantial improvements of optical performance in the context of beams with high numerical aperture, i.e., involving extreme angles and high beam divergence.

Parabolic mirrors (or parabolic reflectors) are mirrors where a cross-section through the optical surface has the shape of a parabola. Typically, the three-dimensional form is that of a paraboloid (i.e., rotationally symmetric), but there are also parabolic mirrors which are curved in only one direction and therefore focus light only in that direction (similar to cylindrical lenses).

This plug-in lets you achieve a realistic effect of simulating what the image on an LCD screen or tube tv looks like or can be used for artistic effect. You can set the size of the pixel optionally.

Some parabolic mirrors are offered for use in extreme spectral regions, e.g. in the areas of infrared optics, ultraviolet optics or even optics for X-ray lasers.

In most cases, however, spherical laser mirrors are fully sufficient for focusing laser beams because the involved beam divergence is moderate.

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For a centered parabolic mirror as shown in Figure 1, the focus is located on the axis of the incoming beam, which is not practical for many applications: one could not access the focus without disrupting the incoming beam. Therefore, one sometimes requires parabolic off-axis mirrors, where the focus point lies outside the incoming beam. This is illustrated in Figure 2, where the input rays have been restricted to the left side. Here, one may of course omit the right part of the mirror, i.e., make a smaller off-axis reflector from a larger parent mirror. The remaining shape is obviously not one which is parabolic around its center; it is more strongly curved around the bottom.

Bad TV lets you create Analog TV distortion on footage in After Effects and Premiere Pro. You can create out of sync and heavily distorted videos with total ease. Best of all, no displacement maps required!

At Shanghai Optics, we design and manufacture custom and standard off-axis parabolic mirrors for companies and institutions around the world. Please contact us for a free quote!

This plugin allows you to move, rotate, scale, blur, blend, fade and distort the RGB channels independently without any hassle of Pre-Comps and layer channels. You can use this plugin to create the popular Chromatic Aberration effect.

Define confocal resonator: A confocal resonator, also known as a confocal cavity or confocal laser resonator, is a type of optical resonator configura...