Acoustooptical Bragg diffraction type multi-beam optical R/W head

Application Number: 00108097
Application Date: 2000.06.14
Publication Number: 1328324
Publication Date: 2001.12.26
Priority Information:
International: G02B27/42;G11B7/12;G11B7/135
Applicant(s) Name: Industry Technology Inst
Inventor(s) Name: Zhu Liangqian;Zhang Zhiji
Patent Agency Code: 72003
Patent Agent: li qiang
Abstract An acoustooptical bragg diffraction type multi-beam optical R/W head features that an ccoustooptical Bragg diffraction element is arranged between the collimator and splitter of traditional optical R/W head and a control unit is used to provide electric signal to trigger acoustooptical action. As a result, a laser device with single light source can genrate multiple light beams, which are focused by an object lens to form multiple R/W light spots, so increasing the data access speed.