First surface MirrorAmazon

First (Front) Surface Mirrors This product has the reflective surface on the first or 'front' surface of the glass. First surface mirrors are used in imaging equipment and applications where the reflected image must be not pass through the substrate. This eliminates the slight bending of light that occurs when an image passes through the glass, reflects off the back, and then returns through the glass as with commercial mirrors. This coating is commonly specified on our custom ground and polished optics. For stock purposes, the 97% reflective mirror coating is put on the front surface of float glass with a clear SiO2 protective coating. However this coating is still very sensitive to scratching and is further sprayed with a light blue coating that must be pealed off prior to use. Grayglass stocks 1/16", S/T, 1/8", and 1/4" thick sheets ranging up to 65" x 74".    FRONT SURFACE MIRROR THICKNESS SHEET SIZE .029"  12" X 12" .045" 16" X 25" 1/16" 16 "X 25" 3/32" 32" X 50" 1/8" 32" X 50" 1/8" 65" X 74" 1/4" 65" X 74"   Precision First Surface Optical Products Laser Optics Instrument Optics Lighting Optics GrayGlass can take your engineered product from concept to production: Hundreds of glass substrates available Coatings to meet the most demanding requirements Precision annealing if needed High tolerance surfaces GrayGlass routinely supplies short run or highest volume custom optical products with first surface reflective surfaces for use in O.E.M. applications.

Under normal shooting conditions, locking the mirror in the up position is not necessary because the vibration from the mirror is so minute. Plus, you cannot see your subject in the viewfinder when using mirror lock-up.

First surface mirrorprice

This is a feature on some digital SLR cameras that allows the mirror inside the camera to be locked in the up position before taking a picture. The purpose of this is to help prevent the slight vibration normally caused by the mirror flipping up when the shutter button is pressed. It is normally used for shooting scenes with long shutter speeds when the camera is mounted on a tripod and using a remote control to release the shutter.

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