Plano Concave Spherical Lens, Dia 50.8 mm, Focal Length -500 mm

Plano-Concave Lenses are ideal for beam expansion, light projection, or for expanding an optical system's focal length.

Plano-concave lens is the most common item used for light projection and beam expansion.The plano-concave lenses are used to expand light beams or to increase focal lengths in optical systems.