5x0.5 mm N-BK7 Round Optical Window, AR Coated

Product description

The N-BK7 protective window is designed for applications in thermal imaging and other optical systems operating within the 0.7-1.7 μm and 400-700 nm bands. This versatile window offers minimal beam deviation and high transmittance, making it suitable for various demanding environments. With a range of diameters from 5.0 mm to 500.0 mm and thicknesses from 0.5 mm to 100.0 mm, it can be tailored to fit specific requirements. The window is available with AR coatings or uncoated options, ensuring optimal performance across different applications.

Key Features

Diameter range: 5.0 mm to 500.0 mm for versatile application fit.
Thickness options: 0.5 mm to 100.0 mm to meet specific design needs.
Surface quality: 60/40 for reliable performance in demanding environments.
Coating options: AR or uncoated for tailored optical performance.
Parallelism: ≤3 arcmin to ensure precise alignment in optical systems.

Available Sizes

Diameter x Thickness (mm)
252.5 x 50.2

Applications

Thermal Imaging

Specification Summary

Item	Value
Material	N-BK7
Shape	Round
Diameter	5 mm
Thickness	0.5 mm
Surface Quality	60/40
Coating	anti-reflective (AR), uncoated
Transmission bands	NIR (0.7-1.7 μm), VIS (400-700 nm)
MOQ	—

Full Specifications

Parameter	Value
Type	protective window
Customized Support	OEM, ODM, OBM
Warranty	not applicable
Weight	0.05
Substrate	N-BK7, H-K9L, Fused Silica
Surface Flatness	1Lambda - Lambda/10 @632.8nm
Parallelism	≤3 arcmin
Bevel	<0.5mmx45 degree

FAQ

Can I get custom sizes?

Yes, the N-BK7 windows can be produced in diameters from 5.0 mm to 500.0 mm and thicknesses from 0.5 mm to 100.0 mm.

What are the tolerances for diameter and thickness?

Diameter tolerance is +0/-0.10 mm, and thickness tolerance is ±0.10 mm.