Researchers develop laser light source for mobile projectors

According to a statement, the development of such technology will enable accurate and efficient projection of photographs and movies on any surface.

Small-size laser projectors 1–2cm in length can be integrated into many kinds of electronic appliances, such as digital or video cameras, gaming devices and mobile phones. Integrated micro projectors could, in practice, project images the size of an A3 sheet of paper on a wall.

The challenge is to develop a small, energy-efficient and luminous three-colour (RGB) light source, whose manufacturing costs can be kept low, for use in the projectors.

Timo Aalto, principal scientist from VTT, said: ‘The project has successfully combined multi-technological know-how from VTT and its partners in the project, from manufacturing materials and the accurate focusing of laser chips all the way to production line design.

‘The project was launched last autumn, and we are now entering the stage where we can move from brainstorming and design to building prototypes.