Presentation 1998/9/25
CD-R compatible dual wavelengths read-out DVD objective lens
Takeshi Shimano, Akira Arimoto, Masayuki Inoue,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Dual Optimum Substrate-thickness Lens (DOSL), which was developed for compatible read-out both of DVD and CD with a wavelength of 650 nm, is newly extended to phase-shifted DOSL for CD-R read-out with a wavelength of 780 nm. Dichromatic annular phase shifter is built in DOSL to reduce spherical aberrations caused by substrate thickness differences in both wavelengths of 650 nm for DVD and 780 nm for CD-R. Data to data jitter of both DVD and CD read-out are 10.1% and 7.4%, respectively.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) DVD / CD / substrate thickness / compatibility / jitter / annular phase shifter
Paper # CPM98-109
Date of Issue

Conference Information
Committee CPM
Conference Date 1998/9/25(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
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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) CD-R compatible dual wavelengths read-out DVD objective lens
Sub Title (in English)
Keyword(1) DVD
Keyword(2) CD
Keyword(3) substrate thickness
Keyword(4) compatibility
Keyword(5) jitter
Keyword(6) annular phase shifter
1st Author's Name Takeshi Shimano
1st Author's Affiliation Hitachi Ltd., Central Research Laboratory.()
2nd Author's Name Akira Arimoto
2nd Author's Affiliation Hitachi Ltd., Central Research Laboratory.
3rd Author's Name Masayuki Inoue
3rd Author's Affiliation Hitachi Ltd., Multimedia System R&D Division.
Date 1998/9/25
Paper # CPM98-109
Volume (vol) vol.98
Number (no) 308
Page pp.pp.-
#Pages 7
Date of Issue