negative meniscus lens -

Negative Meniscus Lens

Negative meniscus lenses have a convex side and a concave side, with the edge being thicker than the center. This design can effectively reduce spherical aberration. These lenses are frequently used together with other lenses to lower the numerical aperture and are widely used in beam expander applications. Coligh Optics offers negative meniscus lenses in various materials and specifications, and can customize them according to specific customer requirements.

A negative meniscus lens is a type of lens with a concave surface on one side and a convex surface on the other, resulting in a curved shape that is thicker at the edges than in the center. This lens can be made from a variety of materials, including glass, plastic, and other materials.

One of the primary applications of negative meniscus lenses is in optical systems, where they are used to correct for various aberrations that can occur in lenses. For example, these lenses can be used to correct for chromatic aberration, which occurs when different colors of light are focused at different points. Negative meniscus lenses can also be used to correct for spherical aberration, which occurs when light passing through the lens is not focused properly due to the curvature of the lens.

In addition to their use in optical systems, negative meniscus lenses can also be used in imaging systems, where they help to improve the resolution and clarity of images. They are often used in telescopes, microscopes, and other imaging equipment to help produce high-quality images with minimal distortion or aberration.

 

Negative  Meniscus Lens factory processing capability:

Parameter Range
Size 10-300mm or custom
Size tolerance +/-0.02mm or custom
Focal length +/-1% or custom
Surface quality 40-20 or custom
Clear aperture >90%
Flateness λ/10@632.8nm
Centration <30 seconds
Bevel <0.2mm✖45°
Coating custom
Material BK7, fused silica, CaF2, Znse

 

Part of Positive Meniscus  lens we processed. The list goes on. Please check with our sales engineer.

Model Diameter EFL R1 R2 Center thickness (Tc） Edge thickness (Te)
NL25.4M100 25.4 -100 33.65 100 3 4.7
NL25.4M125 25.4 -125 38.77 100 3 4.3
NL25.4M150 25.4 -150 43.14 100 3 4.1
NL25.4M200 25.4 -200 50.23 100 3 3.8
NL25.4M250 25.4 -250 55.71 100 3 3.7
NL25.4M300 25.4 -300 95.11 250 3 3.5
NL25.4M400 25.4 -400 112.49 250 3 3.4
NL25.4M500 25.4 -500 126.34 250 3 3.3
NL25.4M1000 25.4 -1000 253.2 500 3 3.2
NL25.4M50 25.4 -50 90 19.9 3 4.5
NL50.8M100 50.8 -100 40.61 200 5 12.3
NL50.8M125 50.8 -125 48.29 200 5 10.6
NL50.8M150 50.8 -150 55.21 200 5 9.6
NL50.8M200 50.8 -200 67.42 200 5 8.4
NL50.8M250 50.8 -250 77.67 200 5 7.7
NL50.8M300 50.8 -300 101.41 300 5 7.2
NL50.8M400 50.8 -400 121.46 300 5 6.6
NL50.8M500 50.8 -500 137.79 300 5 6.3
NL50.8M1000 50.8 -1000 252.85 500 5 5.6

 

 

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