Protection geometry
Use plane, wedged, Brewster, dome or reference-flat geometry according to sealing, field of view and reflection control.
PRODUCT FAMILY
Wedge & Brewster Windows
Wedge and Brewster windows suppress unwanted etalon fringes, back reflections and ghost images.
Wedge angle, material and surface quality should be selected around coherence length, incidence angle and polarization requirements.
Related families
SELECTION PRIORITIES
Choose wedge & brewster windows around the optical requirement
3 product families are available. Use the engineering filters below to narrow the catalog before comparing exact models.
Wavefront quality
Check thickness, flatness, parallelism or wedge and surface quality against the transmitted-wavefront requirement.
Material and environment
Balance spectral transmission, thermal expansion, hardness and environmental durability before selecting a coating.
PRODUCT FINDER
Wedge & Brewster Windows
Compare product families, then open a family to select the exact model, dimensions and coating.
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SELECTION QUESTIONS
Wedge & Brewster Windows FAQ
Technical answers to the questions that most often affect model selection.
When should I use a plane, wedge or Brewster window?
Choose a plane window for general beam-path protection. A wedged window separates front- and rear-surface reflections to reduce etalons and ghost images. A Brewster window is intended for a defined incidence angle and polarization state where p-polarized reflection must be minimized.
How should window material be selected?
Select the substrate from the required wavelength range, thermal load, mechanical environment and cost target. K9 optical glass serves many visible systems, UV fused silica supports ultraviolet and thermally stable use, and sapphire offers greater hardness and environmental durability.
Which window tolerances affect optical performance?
Transmitted wavefront is influenced by surface flatness, parallelism or wedge, thickness variation and material homogeneity. Surface quality and edge finish matter for scatter, handling and high-power applications. Optical flats additionally require the reference surface grade to match the inspection method.
Need a different diameter, tolerance or coating?
Send your material, wavelength, dimensions and quantity for review.
TECHNICAL RESOURCES
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Selection guides and practical notes matched to wedge & brewster windows.
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