Concave lenses

Definition

Concave lenses are lenses that curve inward and cause light rays to diverge. They are used in various optical devices to correct vision and manipulate light paths.

5 Must Know Facts For Your Next Test

1. Concave lenses spread out light rays that are initially parallel, creating a diverging effect.
2. They produce virtual, upright, and smaller images when objects are placed at any distance from the lens.
3. Concave lenses have a negative focal length, indicating the point from which divergent light rays appear to originate.
4. In microscopy, concave lenses can be used in eyepieces to widen the field of view or reduce image size for certain applications.
5. These lenses are commonly used in combination with convex lenses in compound microscopes to enhance image clarity and magnification.

Related terms

Convex Lens:

A lens that curves outward and converges light rays to a focal point.

Focal Length: The distance between the center of a lens and its focus.

Virtual Image: An image formed by diverging light rays that cannot be projected onto a screen.