发明申请
US20090201782A1 HOLOGRAPHIC DISK WITH OPTICAL-NOTCH-FILTER LABEL 审中-公开
带光学滤波器标签的全息磁盘

HOLOGRAPHIC DISK WITH OPTICAL-NOTCH-FILTER LABEL
摘要:
A holographic disk, including: a holographic recording layer and a servo-tracking layer, the holographic recording layer separated from the servo-tracking layer by a dichroic mirror that prevents a data I/O laser from accessing the servo-tracking layer while allowing a servo-tracking laser to access embedded servo tracks; a transparent cover layer including at least one layer of optical notch filter that forms a label, the optical notch filter blocking light at a wavelength different from the data I/O laser and the servo-tracking laser; where the label is a color label including at least one of numbers, letters, descriptive figures, pictures, and barcodes.
信息查询
0/0