BK7 Meniscus lens
Description
Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or just concave). If one of the surfaces is flat, the lens is plano-convex or plano-concave depending on the curvature of the other surface. A lens with one convex and one concave side is convex-concave or meniscus. It is this type of lens that is most commonly used in corrective lenses.
If the lens is biconvex or plano-convex, a collimated beam of light passing through the lens will be converged (or focused) to a spot behind the lens. In this case, the lens is called a positive orconverging lens. The distance from the lens to the spot is the focal length of the lens, which is commonly abbreviated f in diagrams and equations.
BK7 Meniscus lens
Specifications |
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Material: | BK7 |
Diameter: | - mm |
ROC1: | - mm |
ROC2: | - mm |
Diameter Range: | Custom |
Radii Of Curveture: | Custom |
Applications
Laser
For pricing, technical or any other questions please contact the supplier
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Ships from:
China
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Sold by:
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On FindLight:
since 2015
Frequently Asked Questions
A BK7 Meniscus lens is a type of lens that has one convex and one concave side.
A positive lens is a lens that converges light, while a negative lens diverges light.
The focal length of a lens is the distance from the lens to the spot where a collimated beam of light passing through the lens is converged or focused.
The Singlet Lenses are made of H-K9L or Fused Silica.
The surface quality of the Cylindrical Lenses is 40/20.