Presentation 1998/9/25
DVD/CD compatible plastic aspherical objective
Norikazu Arai,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) DVD/CD compatible optical system which has few cost consuming restriction such as aperture restriction and/or changing magnification for CD reproduction was developed. The objective lens is designed to satisfy the spot profile performance for both media. In case of 2 laser optical system for CD-R reproduction, additional photo diode is not necessary. Tolerance of designed objective was calculated and was compared to conventional objective for DVD and that of CD. The result shows that tolerance performance of the newly designed objective is similar to that of conventional objectives. Therefore, the objective is applicable to conventional optical system without changing mechanical tolerance.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) DVD / optical system / spot profile / wavefront aberration / pick-up
Paper # CPM98-108
Date of Issue

Conference Information
Committee CPM
Conference Date 1998/9/25(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Vice Chair

Paper Information
Registration To Component Parts and Materials (CPM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) DVD/CD compatible plastic aspherical objective
Sub Title (in English)
Keyword(1) DVD
Keyword(2) optical system
Keyword(3) spot profile
Keyword(4) wavefront aberration
Keyword(5) pick-up
1st Author's Name Norikazu Arai
1st Author's Affiliation KONICA Corp.()
Date 1998/9/25
Paper # CPM98-108
Volume (vol) vol.98
Number (no) 308
Page pp.pp.-
#Pages 7
Date of Issue