Idea of Mirrored Reflector Bulb Icon
It's the image of a modern looking light bulb. The bulb is shaped like a cone, with a domed lens covering the top of the cone. It looks like a high powered light bulb meant to direct a beam of light.
This page shows the different variations of the Mirrored Reflector Bulb from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.