OPTICAL COMPONENTS

Optical Windows

A clear path for your optical system.

Explore material options or discuss custom dimensions, shapes, and coatings for your system.

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01 / OVERVIEW

Optical windows for your application

Optical windows are flat, transparent optical components designed to protect sensitive optical systems while allowing light transmission at the required wavelength. They are widely used in laser systems, imaging equipment, vacuum systems, and scientific instruments where high transmission, environmental protection, and optical stability are required.

Strahl Optics supports a wide range of optical window materials, including optical glass, fused silica, sapphire, and CaF2, MgF2, with options for different wavelength ranges and operating environments. Our windows are processed through precision fabrication and surface finishing to ensure reliable transmission and optical performance. AR coating solutions are available for specific wavelength ranges.

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02 / CONFIGURATION

Build around your requirements

The table below summarizes typical specification ranges for optical windows.

Specification Options
Substrate BK7, fused silica, sapphire, CaF2, MgF2
Dimensions (mm) 1 – 200
Thickness (mm) 0.5 – 10
Dimensional Tolerance (mm) ±0.1 – ±0.05
Parallelism < 1arcmin
Scratch and Dig 60/40 – 20/10
Surface Irregularity 2λ – λ/20 @ 632.8 nm
Coating Uncoated, AR coating, ITO coating
Clear Aperture > 90%

Specifications represent typical available options. Final specifications are confirmed for each project.

Application areas

Laser Cutting & Welding
Machine Vision Cameras
Vacuum Viewports
UV Curing Systems
03 / PRODUCTS

Optical window materials

Select a material category to continue exploring your options.

04 / CUSTOM OPTICS

Need custom optical windows for your system?

Strahl Optics supports custom optical windows based on your optical system and protection requirements. Optical window can be tailored in substrate materials, shapes, dimensions, thicknesses, surface specifications and coating options to achieve the required optical transmission and mechanical performance.

Discuss custom optical windows
Material selectionDimensions & geometryCoating requirements
05 / SELECTION GUIDE

How to choose an optical window

OPTICS RESOURCES

What kind of material do you need? What wavelength will the window transmit?

06 / CONTACT

Let’s discuss your optical window.

Tell us about your application. We’ll review suitable configurations, recommend practical options, and confirm any additional details needed to prepare a quotation for your project.

To help us review your request, please share the following if available:

  • Drawing or product specifications
  • Dimension and environmental conditions
  • Required quantity
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