The bike light Attaches to the bike seatstay with a simple clip. To grab drivers attention I kept the blinking red lights facing the oncoming traffic, but added a directional spot light for illuminating the bike rider. The directional white spotlight shines onto the bikers legs and back, which will use the leg movement to again increase the object identification and visible attention of motion on the object. There is also a simple water resistant on / off switch. I thought about designing the device to use electricity created by the motion of the bike, but with batteries so inexpensive, I wanted to have the increased reliability of batteries.
Blinking red lights grab drivers attention while back-lighting communicates vital situational information. Better visibility means safer bikers. Bikers can now be seen at any angle without car headlights to shine on them. The light will also not shine into the eyes of the bike rider due to the riders body covering the light before it gets to the riders vision.
Proof of concept. On the left is a biker Without back-lighting, even with a forward facing bike headlight the biker is no more than half a silhouette. With back-lighting the rider pictured to the right is completely visible even without any car lights. Light also won't get in the riders eyes.
Even when the car lights don't reach you, you are still visible to the driver. The Diluna's 8 flashing red LED lights as well as 3 white LED lights are powered for 150 hours by 2 AA batteries. 3D modeled in Autodesk Alias
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Bike Light

Using a back lighting technique the rider can be illuminated from any angle and from a much further distance allowing drivers to perceive a greater amount of situational information and ultimately keep bikers safer. 3D modeled in Autodesk Alias

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Lucas Van Dyke
Senior Industrial Designer at Acuity Brands Lighting Johns Creek, GA