diverging lenses![click to hear](/images/speaker.jpg)
Thicker on the edges than in the center; they cause parallel light rays emanating from an object to diverge.
plano-concave lens ![click to hear](/images/speaker.jpg)
Lens with one flat side and one concave side (curving inward).
concave lens ![click to hear](/images/speaker.jpg)
Lens with one side curving inward; the greater the curvature, the more the light rays diverge.
biconcave lens ![click to hear](/images/speaker.jpg)
Lens with both sides curving inward.
negative meniscus ![click to hear](/images/speaker.jpg)
Lens where the concave side (curving inward) is more pronounced than the convex side (bulging outward).