Aberration-Compensation Methods for 0.85-Numerical-Aperture (NA) Single-Element Objective Lens

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概要

• 論文の詳細を見る

• We have fabricated a high-numerical-aperture objective lens that consists of only a single-element. This lens has a large working distance and does not require assembly procedures in comparison to a two-element objective lens already proposed, We have also developed aberration-compensation methods for coma and spherical aberration. Spherical aberration is compensated automatically by using a servo circuit. A signal read-out obtained from a high-density optical disk is demonstrated using this single-element objective lens.

• 社団法人応用物理学会の論文
• 2002-03-30

著者

• SHIMANO Takeshi

  Hitachi Ltd, Central Research Laboratory

• Shimano Takeshi

  Hitachi Ltd. Central Research Laboratory

• Ariyoshi Tetsuo

  Hitachi Ltd. Central Research Laboratory

• MARUYAMA Koichi

  Asahi Optical Co., Ltd., Optical Research Department

• Maruyama Koichi

  Asahi Optical Co. Ltd. Optical Research Department

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• Magnetooptical Signal Calculation with Simplified Substrate Birefringence Model
• Spherical Aberration Detection in the Optical Pickups for High-Density Digital Versatile Discs
• Spherical Aberration Detection in the Optical Pickups for High-Density Digital Versatile Discs
• Aberration-Compensation Methods for 0.85-Numerical-Aperture (NA) Single-Element Objective Lens

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