Optical Performance of Aspheric Singlets for Compact Disc Use

Tadashi Kojima; Norikazu Arai

doi:10.1117/12.949252

14 February 1986 Optical Performance of Aspheric Singlets for Compact Disc Use

Tadashi Kojima, Norikazu Arai

Proceedings Volume 0554, 1985 International Lens Design Conference; (1986) https://doi.org/10.1117/12.949252
Event: 1985 International Lens Design Conference, 1985, Cherry Hill, United States

Abstract

We reported the diffracton-limited plastic aspheric singlet for CD(Compact Disc) use last year,1,2 and it is now under mass-production. We investigated the off-axis performance of bi-aspheric singlets as well as mono-aspheric singlets, and achievable size of image field from a point of view of optical design. In this study, the specifications of singlets are f=4.5mm, 4mm, NA 0.45 and NA 0.6. Optical performance is evaluated by the value of max-imum image field defined by the area of which the rms wave front error is less than 0.07X (Marechal Criterion). The performance of the design results of bi-aspheric singlets and mono-aspheric singlets under several conditions are investigated. From these results, we concluded that bi-aspheric singlets are most suitable for not only CD but also general optical disc use maintaining enough back focal length and image field.

Citation Download Citation

Tadashi Kojima and Norikazu Arai "Optical Performance of Aspheric Singlets for Compact Disc Use", Proc. SPIE 0554, 1985 International Lens Design Conference, (14 February 1986); https://doi.org/10.1117/12.949252

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