conical horn lens

corneal lens lens

corneal lens（lenses） lens

Lens-to-lens interval

object lens objective lens

objective lens object lens

plane-concave lens (=plano-concave lens)

plane-convex lens (=plano lens)

short focal length lens (=short-focus lens)

variable focus lens vari-focus lens

vari-focus lens variable focus lens

3-D conical filtering

3-D conical heat source

4-row conical roller bearing

90 conical reflector

accurate conical shell solution

asymmetric bi-conical antenna

Au conical target

authalic conical projection