It can be useful to separate Dark Mirror coatings into two groups: Front Surface and Back Surface. A front surface dark mirror design is one for which the reflectance is intended to be very low when viewed from the side coated. In contrast a back surface dark mirror design is intended to be viewed through the glass substrate. It is helpful to remember that a front surface dark mirror may be moderately or highly reflective when viewed from the back surface. And similarly a back surface dark mirror design may be quite reflective when viewed from the front surface.
You may have read the paragraph above and thought, “But wait! My application requires a dark mirror that has low reflectance for both the front and the back!” If so, we are glad to say you are in luck. ZC&R has extensive experience designing dark mirrors that can be used in both configurations simultaneously. This type of dark mirror allows your optic to be both opaque and dark when viewed from either side. Whatever type of dark mirror you require we look forward to reviewing your custom requirements and recommending the best solution.