Author Affiliations
Abstract
Optical Memory National Engineering Research Center, Department of Precision Instrument and Mechanology, Tsinghua University, Beijing 100084
During the design process of Blu-ray disc optical pick-up (BD OPU), the optical system and the collimator lens design is especially important. This paper designs an optical system and some lenses for the BD OPU, including collimator lens, beam shaping lens for laser beam shaping, and cylinder lens for signal detecting. In this OPU, we use a triplet lens to collimate the laser beam. At the same time, we build a series of assembly jigs to make sure that each lens can be put into the OPU basement properly. At last, we get the reading spot image and S-curve photo of OPU, which can be used to read Blu-ray disc (BD).
蓝光光盘 光学头 准直镜 整形棱镜 柱面镜 210.0210 Optical data storage 220.0220 Optical design and fabrication 230.0230 Optical devices Chinese Optics Letters
2008, 6(6): 426