FOCtek provides five kinds of spheric lens forms, or shapes, that determine the imaging Characteristics of the lenses, they are plano-convex, plano-concave, Double-convex, Double-concave and Meniscus.
Plano-convex lens has a positive focal length, which makes it ideal for collecting and focusing light for many imaging applications.
Plano-concave lens has a negative focal length and is used for image reduction or to spread light.
Double-convex lens has a positive focal length and is useful for 1:1 imaging and in multi-element systems. also known as biconvex or equiconvex.
Double-concave lens has a negative focal length and is useful for 1:1 imaging and in multi-element systems. also known as biconcave or equiconcave.
Meniscus lens has a positive or negative focal length, it forms a real or virtual image of objects.
FOCtek provides five kinds of spheric lens forms, or shapes, that determine the imaging Characteristics
of the lenses, they are plano-convex, plano-concave, Double-convex, Double-concave and Meniscus.
- Plano-convex lens has a positive focal length, which makes it ideal for collecting and focusing light for many imaging applications.
- Plano-concave lens has a negative focal length and is used for image reduction or to spread light.
- Double-convex lens has a positive focal length and is useful for 1:1 imaging and in multi-element systems. also known as biconvex or equiconvex.
- Double-concave lens has a negative focal length and is useful for 1:1 imaging and in multi-element systems. also known as biconcave or equiconcave.
- Meniscus lens has a positive or negative focal length, it forms a real or virtual image of objects.
