Fresnel lenses
Identification code: 300183233
Hierarchy classification:
Alternative term/s
- Fresnel lens
- lenses, Fresnel
Anotations
Scope note:
Plano-convex lenses thinned by reducing the convex side to a series of concentric rings of approximately the same focal length; when light passes through, it produces a smooth, soft-edged beam of light.
Powered by:
TemaTres 1.5