I look for LCoS Liquid Crystal over Silicon type rear projection sets, there light engines have a lot of optical parts, dicros, ar coated clear and what i think is called a combining prism that is rather large. DLP sets are not as complex but have AR glass a few mirrors that make up the light tunnel and the color wheel has dicromatic glass as well for red green and blue, the Fresnel lens are slightly different, so make KW spot of doom and others make a bar of focused light that is not as usefull , the DLP and LCoS may serve very well for solar destruction, wear a welding mask for that lol
Remember Remember The 8th of November, When No One Stood, but Kneel, In Surrender
In a popular government when the laws have ceased to be executed, as this can come only from the corruption of the republic, the state is already lost. Montesquieu