Objective lens for blue laser optical pickup with numerical aperture of 0.9

被引：2
|
作者：
Takada, K
Hatano, H
Hashimura, J
Mushiake, N
Ueda, H
机构：
[1] Minolta Co Ltd, Takatsuki Lab, Takatsuki, Osaka 5698503, Japan
[2] Minolta Co Ltd, Opt Syst Operat, Sayama, Osaka 5890021, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2002年 / 41卷 / 3B期
关键词：
objective lens; high numerical aperture; high-density recording; blue laser; tolerance; coma; spherical aberration; offence against the sine condition;
D O I：
10.1143/JJAP.41.1838
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Several types of objective lenses for blue laser optical pickup have been proposed. These objective lenses are composed of two lenses, and have a numerical aperture (NA) of 0.85 for high-density recording. We designed and fabricated a NA 0.9 lens for improvement of the technique. The objective lens is composed of two lenses. To achieve a precise wavefront, the objective lens was designed to use only one aspherical surface and to expand the tolerances of each lens.
引用
收藏
页码：1838 / 1839
页数：2
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