BK7 Double Convex Lens

• Broad Spectral Transmittance: BK7 double-convex lenses exhibit exceptional transmittance from 350nm to 2000nm, ensuring clear imaging across a wide range of wavelengths.


• Finite Imaging Applications: Ideal for applications requiring finite imaging, such as magnification, projection, and focusing systems, where precise optical performance is crucial.


• Optical Precision: Engineered with high precision, these lenses maintain tight tolerances for diameter, center thickness, surface figure, and focal length, ensuring consistent and reliable performance.


• Versatile Sizing Options: Available in various diameters and focal lengths, offering flexibility to meet diverse application requirements.


• Durable Construction: Constructed from BK7 glass, these lenses are robust and durable, capable of withstanding demanding optical environments.


• Customization Available: Tailored options including diameter, focal length, center thickness, and coating specifications are available to accommodate specific application needs.


• Coating Options: Offered with a choice of uncoated or customized anti-reflective (AR) coatings to enhance optical performance and minimize unwanted reflections.

Summary: 

Material: BK7 Optical Glass
Design Wavelength: 587.6nm
Diameter Tolerance: +0.0/-0.1mm
Center Thickness Tolerance: ±0.2mm
Surface Figure: λ/4 @633nm
Focal Length Tolerance: ±1%
Centration: 3 arc min.
Surface Quality: 40/20-60/40
Bevel: 0.1mm-0.3mmx45°
Coating: Uncoated or Customized AR

• Finite Imaging Applications: BK7 double-convex lenses are ideal for finite imaging applications due to their excellent transmittance from 350nm to 2000nm.


• Optical Systems: Used in various optical systems where the advantages of UV grade fused silica are not required, providing a cost-effective solution with BK7 glass.


• Scientific Instruments: Suitable for use in scientific instruments that require precise imaging capabilities.


• Laser Applications: Can be used in laser applications where a specific design wavelength of 587.6nm is advantageous.


• Custom Optical Solutions: Available with uncoated or customized anti-reflective (AR) coatings to fit specific needs, making them versatile for custom optical solutions.


• Alternative Substrate Options: Besides N-BK7, lenses can be made from CaF2, Fused Silica, and ZnSe substrates, offering flexibility in material choice for different applications.