BK7 optical concave convex glass lens
Convex Lens is the image formed by refraction imaging, which can be positive or inverted; Virtual and real; Release and shrink. Focus
Concave mirror is a reflection image that can be reduced or enlarged into an inverted real image or an upright enlarged virtual image. Astigmatism lens (including convex lens) is an instrument that transmits light and uses light to form an image after folding. Light abides by the law of refraction. A mirror (including a convex mirror) is not an instrument that transmits light, but reflects it back to form an image. Light obeys the law of reflection.
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 |
Hanzhong Hengpu Photoelectric Technology Co., Ltd. is located in Hanzhong City, southwest of Shaanxi Province, China. The boss is of technical background and has more than 20 years of industry experience. The company's main products are: optical lenses, Optical Windows, Optical Prisms, wedge-shaped lenses, spherical mirrors and other optical lenses, involving almost all of the optical glass materials and crystal materials. Hengpu focuses on R&D, production and sales of optical products, and accepts OEM services at the same time. The company will take "honest and trustworthy, continuous innovation, quality first, customer first" as the development guide, and in accordance with the ISO9001: 2008 quality management system, Hengpu will use high-quality products and services through excellent production and continuous improvement. Maximize customer satisfaction.
Other series products：
Concave Lens Achromatic Lens Ball Lens Silicon Window Zinc Selenide Window Meniscus lens
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