Dielectric Mirror Buy
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The first materials used for glass mirror production in the first century CE were metals (lead, tin, silver, gold, mercury). А piece of glass was coated with a thin metal leaf in the back. Technology of glass and mirror production was evolving in the Middle Ages to make the mirror surface big and smooth, glass more transparent and metal layer brighter and more reflective. One mirror type, well known as Venetian Mirrors by the 16th century, was coated with a tin-mercury amalgam, and the mercury was then evaporated by heating the piece. Venetian Mirrors in luxury frames served as superior decorations for palaces throughout Europe. Nowadays mirrors are produced similar way, of course it is more efficient and does not require harmful mercury evaporation process. Mirrors are often produced by the wet deposition of silver, or sometimes nickel or chromium (the latter used most often in automotive mirrors) via electroplating directly onto the glass substrate.
There are special requirements to mirrors when we consider Mirror TV product. Beside bright and even reflectance which is the most important parameter for regular mirrors we shall keep good transmittance in the screen area to be able to see the image when the TV is ON. The higher the reflectance is - the lower the transmittance. Transmission coefficient (T) + reflection coefficient (R) = 1 as we know from optics. Finding the right balance of T and R is very difficult and important part of making the perfect Mirror TV. We in AVEL use Silver Mirror type (40% (T) and 60% (R)) for all regular Mirror TVs and we have dark Graphite Mirror (25% (T) and 75% (R)) for projects with ultra-bright screens.
The second important difference from regular mirrors is that the reflecting coating of the mirror for good Mirror TVs is in the front face (not in the back) to make the reflectance brighter. The light does not have to cross the glass twice. All AVEL Mirror TVs has mirror coating in the front of the glass for the best mirror performance and good screen visibility. In all our TVs we use special dielectric composite coating, it has great optical parameters and quite resistant to mechanical damages and scratches. Big advantage of these mirrors, also known as Dielectric Mirrors, is that they can work with modern capacitive touch screens.
The third issue we pay high attention to is the safety of our TVs. Regular mirrors are made of non-tempered regular glass mostly. In furniture elements mirror can be glued to the wooden back plate and quite hard to break. In all our TVs we use tempered safety glass. This kind of glass is treated with high temperature to became more tough and breaks to small non-harmful pieces in case of damage. This temperature treatment can cause a slight distortion in the reflection on the sides of the TV, but despite this small negative issue we are still sure it is more important to be safe. Some of the Mirror TVs are installed in bathrooms with slippery areas close to the screen and kids who play nearby.
This section may be titled Broadband Dielectric Mirrors, although, you will also see these named Ultra-Broadband Dielectric Mirrors and the ranges are incredibly wide, with high reflectance throughout! With UV mirrors from 245nm-400nm and UV to NIR from 300nm-2000nm! WOW! Reflectance values up to 98% average across the bands. These are specific for use at 45-Degree AOI and are suitable for applications that require high reflectance across a broad spectrum. As always, if one of our many standard products do not meet your needs, ask us for a custom solution!
This 90 1.25\" mirror-type star diagonal has a Dura-Bright mirror with 1/10 or better wave surface accuracy and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. The diagonal body features a dedicated M63x1 male thread adapter on the telescope side for direct coupling with the M63 female thread on the end of the focuser tube of the WOStar 71 II telescope.
These dielectric coated HR mirrors are highly efficient over a broad wavelength range. Both bragg mirror, where all optical layer thickness values are just one-quarter ofthe design wavelength, and more complicated multilayer structure designs are used toobtain desired reflection. Dielectric coated HR mirrors are durable and will withstand repeated cleaning.
Notes: Due to the structure of the multilayer deielectric coating, the spectral range over whichthe mirror is highly reflective shifts toward longer wavelengths as the angle of incidencedecreases to zero. 59ce067264
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