doublet de lentilles

[1977] The Development of Compound Eyepieces, 1640-1670 ; Albert van Helden ; Journal for the History of Astronomy 8 (1977) p. 26 [lien]
[1999] Diffractive Apochromatic Double-Gauss Lens ; J. Brian Caldwell ; Optics and Photonics News 10 (1999) p. 43 [lien]
[1999] Fast Double-Gauss Lens ; J. Brian Caldwell ; Optics and Photonics News 10 (1999) p. 38 [lien]