BK7 Window

At TC Optik, we are proud to offer high-quality BK7 windows that are
manufactured to the highest standards of precision and quality. Our BK7 fused
silica windows are made from high-quality borosilicate optical glass with
exceptional optical transmission characteristics, and are ideal for a wide
range of applications, including imaging, spectroscopy, laser optics, and more.
H-K9L is the alternative for N-BK7.H-K9L (N-BK7) is a RoHS-compliant
borosilicate crown glass. It provides excellent transmission in the visible and
near-infrared portions of the spectrum (350 nm - 2.0 µm). It is typically
chosen whenever the additional benefits of UV fused silica. H-K9L (N-BK7) is
probably the most common optical glass used in high-quality optical components.

Specification of BK7 Window
Optical windows are an essential component in various optical applications such
as laser systems, medical instruments, and scientific research devices. They
play a crucial role in protecting optical systems from external elements and
ensuring precise measurements by allowing light to pass through with minimal
distortion. When it comes to optical windows, the material used is a critical
factor in determining the performance and quality of the window. One such
material that stands out is N-BK7 glass, which is widely recognized for its
superior optical properties and versatility. In this article, we will take a
closer look at N bk7 optical windows and explore their characteristics,
applications, and advantages over other materials.

Material BK7
Diameter 1 to 500 mm
Diameter Tolerance +0/-0.02 mm
Thickness Tolerance ±0.01 mm
Surface Quality 10-5
Surface Figure λ/10
Parallelism 1 Minute
Coating Uncoated, AR, HR, Beamsplitter, etc.

Our BK7 windows offer excellent performance and superior durability, thanks to
their high scratch resistance and low coefficient of thermal expansion. They
are available in a range of standard sizes and thicknesses, or can be custom-
manufactured to your exact specifications.

At TC Optik, we use state-of-the-art manufacturing techniques and equipment to
ensure that our BK7 windows are of the highest quality. Our experienced
engineers and technicians use advanced glass grinding and polishing techniques
to achieve the precise dimensional and optical specifications required by our
customers, and we are committed to providing exceptional customer service and
support.

We offer competitive pricing and fast turnaround times on all of our custom
optical window, and are happy to work with you to find the right solution for
your specific needs. Contact us today to learn more about our optical window
glass and how they can help you achieve your optical needs.

Types of optical window glass for your needs:

Fused silica window

Sapphire optical window

ZnSe window

Germanium window

Silicon window

Borosilicate glass for sale

Float glass optical windows

Understanding N-BK7 Optical Windows
N-BK7 is a type of borosilicate crown glass that contains a precise composition
of boron and potassium. This glass is specifically designed to offer
exceptional optical transmission in the visible and near-infrared regions. With
a refractive index of 1.5168, N-BK7 glass has excellent optical clarity, low
dispersion, and high homogeneity, making it an ideal material for optical
applications.

N-BK7 optical windows are available in a range of sizes and shapes, including
round, rectangular, and square. They are manufactured using precision grinding
and polishing techniques to achieve flatness and parallelism within a few arc
seconds. Additionally, N-BK7 optical windows can be coated with various anti-
reflective coatings to minimize surface reflection and enhance optical
performance.

Applications of N-BK7 Optical Windows
N-BK7 optical windows find applications in various fields such as:

Laser Systems
N-BK7 optical windows are commonly used in laser systems for protecting the
laser cavity and allowing the laser beam to pass through. They are also used in
laser diodes and laser mirrors, where they help to reduce losses and enhance
beam quality.

Medical Instruments
N-BK7 optical windows are used in medical instruments such as endoscopes and
microscopes for imaging and diagnosis purposes. They help to provide clear and
accurate images by minimizing distortion and aberrations.

Scientific Research
N-BK7 optical windows find applications in scientific research devices such as
spectrometers, telescopes, and cameras. They are used to measure and analyze
light spectra, stars, and other celestial bodies.

Aerospace and Defense
N-BK7 optical windows are widely used in aerospace and defense applications,
where they help to protect sensors and other optical components from harsh
environments.

Advantages of N-BK7 Optical Windows
N-BK7 optical windows offer several advantages over other materials such as:

High Transmission
N-BK7 glass has a high transmission in the visible and near-infrared regions,
making it suitable for a wide range of applications.

Low Dispersion
N-BK7 glass has low dispersion, which means that it can minimize chromatic
aberrations and ensure clear and accurate images.

Cost-effective
N-BK7 glass is relatively inexpensive compared to other optical materials,
making it an affordable choice for various applications.

Durable
N-BK7 glass is resistant to thermal and mechanical shock, making it a durable
and reliable material for optical windows.

FAQs
N-BK7 optical windows are a reliable and cost-effective choice for various
optical applications. With their superior optical properties and versatility,
they offer high transmission, low dispersion, and durability, making them ideal
for use in laser systems, medical instruments, scientific research devices, and
aerospace and defense applications. Their availability in various shapes and
sizes, along with the option to customize coatings, makes them a versatile
choice for any optical system.

Q1. What is N-BK7 glass?
A1. N-BK7 glass is a type of borosilicate crown glass that contains a precise
composition of boron and potassium. This glass is specifically designed to
offer exceptional optical transmission in the visible and near-infrared
regions.

Q2. What are the applications of N-BK7 optical windows?
A2. N-BK7 optical windows find applications in various fields such as laser
systems, medical instruments, scientific research, and aerospace and defense.

Q3. What are the advantages of N-BK7 optical windows?
A3. N-BK7 optical windows offer several advantages over other materials such as
high transmission, low dispersion, cost-effectiveness, and durability.

Q4. Can N-BK7 optical windows be customized?
A4. Yes, N-BK7 optical windows can be customized to meet specific application
requirements, including size, shape, and coating.

Q5. How are N-BK7 optical windows manufactured?
A5. N-BK7 optical windows are manufactured using precision grinding and
polishing techniques to achieve flatness and parallelism within a few arc
seconds.

In summary, N-BK7 optical windows are an ideal choice for various optical
applications due to their superior optical properties, versatility, and cost-
effectiveness. With their high transmission, low dispersion, and durability,
they offer clear and accurate imaging while protecting optical systems from
external elements. By customizing the size, shape, and coating of N-BK7 optical
windows, they can be tailored to meet specific application requirements.

If you want to know more about bk7 glass price, please contact us.

Minimum Order: 100 pieces

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