The blue laser has a wavelength of 450 nm and an output of 50 mW. The voltage is 5.5 V, and the slope efficiency 0.9 W/A. It combines all the important properties for mini projectors such as small size, high efficiency and good visibility of the blue light. As a ridge laser it also has an excellent beam quality and therefore needs only relatively simple small optics to shape the beam. According to Thomas Höfer, Head of Laser Projection at OSRAM Opto, “Our newly developed blue laser is a further step in our quest to enable miniaturized projectors that can be fully integrated in mobile devices.”
Mobile devices currently available on the market can produce and download high-quality photos and video clips. Integrated laser projectors will enable this content to be viewed also in high quality on almost any surface.
Lasers represent the next milestone in the development of mobile devices and have a promising future in terms of integrating projection modules. They will be appreciated by end customers for their extremely low power requirements and compact dimensions. They also offer exceptionally vibrant colors and high contrast, and they always produce sharp images irrespective of the distance over which the images are projected.
OSRAM Opto is also developing red and green lasers. The red laser, like the blue laser, will be designed as a direct semiconductor laser. Green lasers will be implemented using frequency doubling.
