6mm Meniscus Lens glass Optical Lens
Positive meniscus lens is mainly used to minimize spherical aberration. When combined with another lens, the positive meniscus lens can reduce the focal length and increase the system numerical aperture (NA) without introducing obvious spherical aberration. When used to converge parallel light, in order to minimize the spherical aberration, the convex surface of the lens shall face the direction emitted by the light source. The coated lens is also widely used in visible and near-infrared applications.
Material: K9, BK7, FS, UVFS, CaF₂, ZnSe
Diameter:3mm-200mm±0.05mm
Center Thickness Tolerance:±0.05mm
Lens Alignment Error:≤3min
Surface Accuracy:λ/ 10 @
Surface Quality:40/20. 60/40. 80/60
Effective Caliber: 90%
Example with BK7 material：These N-BK7 Meniscus lens are available uncoated or with one of five antireflection coatings (-A, -AB, -B, -C, or -D), which reduces the amount of light reflected from each surface of the lens (see the Selection Guide table below for coating option). Since approximately 4% of the incident light is reflected at each surface of an uncoated substrate, the application of an AR coating improves transmission, which is important in low-light applications, and prevents the undesirable effects (e.g., ghost images) associated with multiple reflections. Having optics that are AR coated on both surfaces is particularly desirable for applications utilizing multiple optical elements. Please see the Graphs tab for additional coating information.
| N-BK7 Meniscus lens Selection Guide | 
|
| Coating name | wavelength band |
| Uncoated | Uncoated |
| A Coating | 350nm-700nm |
| AB Coating | 400nm-1100nm |
| B Coating | 650nm-1050nm |
| C Coating | 1050-1700nm |
| D Coating | 1650nm-3000nm |
We are manufacturers of optical glass lens and prisms
We can customize all kinds of optical glass lens and prisms according to your drawing, detailed request or sample
Welcome to inquiry
Other related products： Concave Lens Achromatic Lens Ball Lens Silicon Window Zinc Selenide Window Wedge Optical WindowOther related products： Concave lens Achromatic lens Ball lens Silicon window Zinc Selenide Window Wedge Optical Window
Other related products： Concave lens Achromatic lens Ball lens Silicon window Zinc Selenide Window Wedge optical window
Contact Now
