Title :
Three wavelength compatible pickup with blue/red multi-beam laser unit
Author :
Nagatomi, Kenji ; Ogata, Masahito ; Kajijyama, Seiji ; Tsuchiya, Youichi ; Bessyo, Yasuyuki
Author_Institution :
Sanyo Electr. Co. Ltd., Osaka, Japan
fDate :
5/1/2005 12:00:00 AM
Abstract :
We have proposed a compatible pickup for HD DVD/DVD/CD systems, which uses a blue/red multi-beam laser unit and an IR-LD (infra-red laser diode) chip. The optical path of the DVD system is aligned to that of the HD DVD system to share one sensor. Experimental results confirm the practicality of the proposed pickup.
Keywords :
consumer electronics; digital versatile discs; disc drives; laser beam applications; pick-ups; semiconductor lasers; 3D actuator; CD system; DVD system; blue-red multibeam laser unit; infrared laser diode; tilt compensation; wavelength compatible pickup; wavelength selective binary optical element; Actuators; DVD; Diode lasers; High definition video; Lenses; Optical design; Optical sensors; Power generation; Sensor systems; Threshold current;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2005.1467969
