What does light pen actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

Lumenoise is an audio synthesizer controlled by drawing with a light-sensitive pen on a CRT television. The pen is a self-contained module which connects to the TV via audio and composite video ...

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an extremely simple ...

Then, I came across Neutrogena's genius new Light Therapy Acne Spot Treatment. The $20 pen-like device is the portable little sister to the brand's popular full-face LED mask.

The film showcases the innovative work of engineers at Bell Telephone Laboratories as they explore computer graphics and its applications in designing electronic circuits. Using a device called ...

The rear button switch can be operated in a momentary mode or continuous light. The Ion Pen Light's construction is anodized aircraft aluminum and it comes with a pocket clip attachment.

Writer Rebecca Jane Stokes tried a light therapy pen to treat her cystic acne, but it helped with weight loss, too.

Geeks and fans might be fascinated by the pen's levitating platform, which makes the miniature light saber seemingly float, thanks to magnetism. Or the Force, if you prefer.

That is because Meals on Wheels has added a new program called Pen Pals that invites anyone to write a letter and become friends with one of their recipients.

3. Mathmos Bike Wheel Lights Also priced at £10 are Mathmos Bike Wheel Lights . They easily screw directly on to your bike wheel valves and create circles of light when you cycle.