Sony developed optical pickup for mobile Blu-Ray Disc devices
At ISOM/ODS Sony reported about the development of small-sized pickup supporing the Blu-ray Disc standard for next-generation recording and playback devices.
Striving to meet the miniaturization requirements for the secodn-generation optical drives (Blu-ray Disc), Sony halved optical-system parts from 16 to 8. At that outside dimensions were reduced to 11x6x4.1 mm. According to the company, such thickness will enable to integrate such drives into any kind of portable PC.
The module features a blue-violet semiconductor laser, photodetectors, a polarizing prism, a mirror, a diffraction grating, a cylindrical lens, hologram elements and a half-wave plate.
The semiconductor laser element is manufactured by Sony Shiroishi Semiconductor. Its power consumption is about three times higher than infrared-semiconductor lasers for mini discs.
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