| Autor: |
Nishi, Hisami, Ichikawa, Hiroyuki, Toyama, Minoru, Kitano, Ichiro |
| Zdroj: |
Applied Optics; October 1986, Vol. 25 Issue: 19 p3340-3344, 5p |
| Abstrakt: |
A radial gradient-index aplanatic singlet pickup objective lens for the compact disk (CD) system has been designed, manufactured, and evaluated. A plano-convex aplanatic singlet was designed by optimizing the refractive-index coefficients of the gradient-index medium, lens thickness, and one curvature. The necessary ion exchange technology and surface fabrication technology have been developed to successfully fabricate the objective lens. The gradient-index singlet was mounted in a CD player, and tests confirmed that the lens meets the system requirements. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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