CaF2 BaF2 Barium Fluoride LiF K9 Ge ZnSe ZnS Biconcave Lens
Description
Biconcave lenses have a negative focal length and consist of two concave surfaces of equal curvature, which can disperse a parallel incident beam outward and are commonly used for beam spreading, collimation, projection and focal length expansion of optical systems. Biconcave lenses disperse a collimated beam to an imaginary focal point and are commonly used in Galilean beam expanders.
CaF2 BaF2 Barium Fluoride LiF K9 Ge ZnSe ZnS Biconcave Lens
Specifications |
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|---|---|
| Material: | UVFS, CaF2, ZnSe, Si, Ge, H-K9L, BaF2, MgF2 |
| Diameter: | 12.7~25.4 mm |
| Focal Length: | -15~-1000 mm |
| Edge Thickness, Te: | 2~6 mm |
| Lens Type: | Bi-Concave |
Features
Biconcave lenses can disperse a parallel incident beam outward and are commonly used for beam spreading, collimation, projection and focal length expansion of optical systems.
Applications
Biconcave lenses disperse a collimated beam to an imaginary focal point and are commonly used in Galilean beam expanders.
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China
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On FindLight:
since 2024
Frequently Asked Questions
Plano-concave lenses are lenses with one side flat and the other side concave.A biconcave lens means that both sides of the lens are concave.
It can be used in optical systems to expand beams, project light, and expand the focal length of optical systems.
There are also two straight lines from the top of the object: one is parallel to the main optical axis, and is deflected into divergent rays after passing through the biconcave lens, and returns the refracted rays in the opposite direction to the main focus; the other passes through the optical center point of the lens. These two straight lines When straight lines intersect at a point, this is the image of an object.