| Date | 1827 |
| Author | Amici |
| Contribution | Produced improved objective by new approach (resulting from work begun in 1824). |
| Reference | Bradbury |
| Notes | He empirically arranged achromatic doublets (or triplets) so that the spherical aberration of each successive doublet canceled out the spherical aberration of the one that preceded it. Permitted wider apertures, and thus more brightness and better resolution. |
| Category | Microscopy |
| Pathogen Class | General |
Copyright © 2007- William C. Campbell. All rights reserved.