A single layer image projection film uses periodic microstructures to form magnified moiré images through light transmission and reflection.
Rotatable bulb with control chip adjusts LED frequency to simulate flickering oil lamp flame while maintaining weather-resistant stability.
Disposable ABS insert with segmented clips joins planar parts to hold decorative elements, replacing lead strips to cut assembly time and material waste.
A projection device uses rotating optical path plates to generate dynamic meteor lighting effects.