Does anyone know the principle of the four star projection light of the adult science?
3 modes: the lights inside the projection lenses in different position, adjust to different modes can let the stars in different positions, so as to form the seasons
2, light refraction: star map in the lamp is a projection lens, so that through the reflection of the lights is played out
In fact, with the same principle, 1 projectors into holes: can turn out the lights inside the prepared miniature star map zoom
