EntityQ560808· pop 18· linked from 112 articlesaspheric lensSign in to savelens whose surface profiles are not portions of a sphere or cylinderConnectionsglassesEntitydioptreEntityspheroidEntitylaser diodeEntitySchmidt cameraEntitycorrective lensEntityRené DescartesEntityphotographyEntityInternational Standard Book NumberEntitytelescopeEntityinfrared radiationEntityChristiaan HuygensEntitysphereEntitycameraEntitydigital object identifierEntitycylinderEntityInternational Standard Serial NumberEntityGotlandEntitylensEntityellipseEntityCategoriesLenses