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1. 发明公开

KR1020000005288A 광기록매체_ 无效
标题翻译：光学记录介质
公开(公告)号：KR1020000005288A
公开(公告)日：2000-01-25
申请号：KR1019980707996
申请日：1997-04-10
申请人： 가부시끼가이샤 히다치 세이사꾸쇼 , 히다치 마쿠세루가부시키가이샤
发明人： 스기야마도시노리 , 스에나가마사시 , 와타나베히토시 , 기노시타신이츠 , 스케다히로후미 , 스기야마히사타카
IPC分类号： G11B7/24079
CPC分类号： G11B7/24079 , G11B7/0938 , G11B11/10578 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： PURPOSE: An optical recording medium is provided to run the reliable tracking. CONSTITUTION: An optical high density recording medium have the refractive index(n) of the substrate and the width(g) of grooves(12) is larger than the width(L) of a land(11) between the grooves (12). The rate(g/L) of the width(g) of grooves and the width(L) of a land(11) is more than 1.6 and the track pitch(Tp) is smaller than 1 micro meter. Where gamma is the wavelength of the reproduced light, n is the refractive index of the substrate, theta is the angle of inclination of the side wall of the grooves, the height(h) of the land from the bottom(13) of the grooves satisfies {(gamma/(8n))xLxtan(theta)}/{Lxtan(theta)-(gamma/(8n))}.le. h. le.{(gamma/(5n))xLxtan(theta)}/{Lxtan(theta)-(gamma/(5n))}. Even when the width(L) and height (h) of the land undergo a change due to optical fogging, light diffracted by the shoulder(19) of the land is suppressed from being disturbed, and a stable track position control signal is obtained.
摘要翻译：目的：提供光记录介质来运行可靠的跟踪。构成：光学高密度记录介质具有基板的折射率（n），并且槽（12）的宽度（g）大于槽（12）之间的焊盘（11）的宽度（L）。槽的宽度（g）和焊盘（11）的宽度（L）的比率（g / L）大于1.6，轨道间距（Tp）小于1微米。其中γ是再现光的波长，n是衬底的折射率，θ是槽的侧壁的倾斜角，焊盘从槽的底部（13）的高度（h）满足{（γ/（8n））xLxtan（theta）} / {Lxtan（theta） - （gamma /（8n））}。 H。乐{（伽马/（5N））xLxtan（THETA）} / {Lxtan（THETA） - （γ-/（5N））}。即使当由于光学起雾引起的焊盘的宽度（L）和高度（h）发生变化时，抑制由焊盘的肩部（19）衍射的光被干扰，并且获得稳定的轨道位置控制信号。

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