Design of a Write-Once Optical Disc Drive Head

Sunny Hsu

doi:10.1117/12.939749

10 April 1987 Design of a Write-Once Optical Disc Drive Head

Sunny Hsu

Proceedings Volume 0741, Design of Optical Systems Incorporating Low Power Lasers; (1987) https://doi.org/10.1117/12.939749
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The design of a write-once-read-multiple optical disc drive head using an 780 nm 20 mW diode laser is presented. To achieve high density data storage, the laser is collimated and aberration corrected before it is focused by a .50 NA objective lens onto the disc. The light diffracted back from the disc is used to generate an RF data signal as well as error signals for focusing and tracking. Detailed design requirements and considerations are discussed.

Citation Download Citation

Sunny Hsu "Design of a Write-Once Optical Disc Drive Head", Proc. SPIE 0741, Design of Optical Systems Incorporating Low Power Lasers, (10 April 1987); https://doi.org/10.1117/12.939749

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