Transparent conductors exist [link].
Why not use one of these materials for the window into a microwave oven, instead of a piece of metal mesh?-- goldbb, Aug 15 2017 Transparent conducting film https://en.wikipedi...ent_conducting_film [goldbb, Aug 15 2017] Possible answer to your question: they are not conductive enough. Modern electronic gadgets with touchscreen only need to handle milliwatts of power; microwave ovens routinely employ hundreds of watts of power.-- Vernon, Aug 15 2017 A composite of wires fine enough and the conducting film might make things a bit clearer.-- wjt, Aug 17 2017 Now can we have the same for the Faraday cage I have set up around my lab?-- RayfordSteele, Aug 17 2017 There's a patent for microwave glasses that have two transparent conductive films, spaced 1/4 wavelength apart.-- MaxwellBuchanan, Aug 17 2017 These glasses, if you wear them, you can see in the microwave band, right ? That would be cool ...
Is there a choice of frames ? Maybe Ray-Ban Wayfarers ?-- 8th of 7, Aug 17 2017 random, halfbakery