Fresnel lens at Ponce Inlet Lighthouse,Daytona Beach,FL. Invented by French physicist Augustin-Jean Fresnel,the lens is much thinner than a conventional lens,which allows for a large aperture and short focal length at a lower weight | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Harris, Eunice |
Taille de l’image : | 2772 px × 4202 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
|