Lumigrids is an LED-projected Grid Light for Night Biking
Aiming to make night biking safer, engineers from Sichuan University in China developed the Lumigrids. It is an LED projector that clamps on the handlebar to throw a grid image on the road. WIth it, cyclists can see the upcoming holes and bumps by easily looking at any changes or bends with the shape of the grid.
The Lumigrids is flexible enough to be used without any batteries. It can function solely from the movement of the bike's wheels or you can load it up with an internal battery. Using it isn't so complex since it only has one button – the power button. Users can easily turn it on and off even while riding at high speeds.
The device has three different sizes to choose from which are all designed for different situations. The normal size measures 140 x 180mm (5.5 x 7.1 inches), for high speed rides there's a larger 140 x 260mm (5.5 x 10.2 inches) grid, while the "team" mode projects a wide 300 x 200mm (11.8 x 7.9 inches) grid on the road.