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    • 4. 发明申请
    • Optical Scanning Device
    • 光学扫描装置
    • US20080265037A1
    • 2008-10-30
    • US12094609
    • 2006-11-24
    • Gert T'HooftFrank Jeroen Pieter SchuurmansBernardus Hendrikus Wilhelmus HendriksMohammed Meftah
    • Gert T'HooftFrank Jeroen Pieter SchuurmansBernardus Hendrikus Wilhelmus HendriksMohammed Meftah
    • G06K7/10
    • G02B26/005G02B3/14G11B7/0065G11B7/1392
    • An optical scanning device for scanning an optical record carrier. The optical scanning device includes: a radiation source system (661; 761); an optical element (1; 101; 201; 301) comprising a first fluid (A) and a second fluid (B; C) separated from each other by a fluid meniscus (16; 116, 138; 216; 316) having an adjustable configuration; and a control system (20; 120; 220; 320) arranged to adjust the fluid meniscus configuration to introduce a first type of wavefront modification. The first type of wavefront modification causes the radiation beam to be redirected from an input radiation beam path (2; 102; 244; 348) onto one of a plurality of output radiation beam paths (24, 26; 140; 246; 350) which each have a different angular displacement (α, β, γ, δ, ∈) from the input radiation beam path. The control system is further arranged to adjust the fluid meniscus configuration to introduce a second type of wavefront modification. The second type of wavefront modification is arranged to compensate a wavefront aberration of the radiation beam, the compensated wavefront aberration being adjusted in accordance with the angular displacement.
    • 一种用于扫描光学记录载体的光学扫描装置。 光学扫描装置包括:辐射源系统(661; 761); 包括通过流体弯月面(16; 116,138; 216; 316)彼此分离的第一流体(A)和第二流体(B; C)的光学元件(1; 101; 201; 301) 组态; 以及布置成调节流体弯月面配置以引入第一类型波前修改的控制系统(20; 120; 220; 320)。 第一类型的波前修正使得辐射束从输入辐射束路径(2; 102; 244; 348)重定向到多个输出辐射束路径(24,26; 140; 246; 350)中的一个上,其中 每个都具有与输入辐射束路径不同的角位移(α,β,γ,δ,∈)。 控制系统进一步布置成调节流体弯液面配置以引入第二类型的波前修改。 第二类型的波前修正被布置为补偿辐射束的波前像差,补偿的波前像差根据角位移被调整。