Optical lens, condenser lens, optical pickup, and

专利名称：Optical lens, condenser lens, optical pickup,

and optical recording/reproducingapparatus

发明人：Masataka Shinoda申请号：US11119095申请日：20050429公开号：US07142365B2公开日：20061128

专利附图：

摘要：The present invention provides an optical lens having a high refractive index anda low light absorption characteristic in an ultraviolet-wavelength region; a condenser lens

composed of the optical lens, fit for the near-field optical recording/reproducing system;an optical pickup that includes the condenser lens and can reduce the condensed lightspot irradiating a recording medium and also manage to make the recording mediumhigher in recording density and greater in capacity; and an optical recording/reproducingapparatus comprising the optical pickup to enable optical recording and reproduction inhigh recording density to be performed.

申请人：Masataka Shinoda

地址：Kanagawa JP

国籍：JP

代理机构：Rockey, Depke, Lyons & Kitzinger LLC

代理人：Robert J. Depke

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