Photochina offers a comprehensive range of optical windows designed to isolate different physical environments while allowing light to pass through. When selecting the ideal window, it is crucial to consider factors such as materials, transmission, scattering, wavefront distortion, parallelism, and environmental resistance. Photonchina provides a wide array of materials and precision levels to suit various requirements, including special materials available upon request. Additionally, a broad selection of single-layer or multilayer antireflective coatings on optical windows is available to enhance performance.

N-BK7 Optical Windows are crafted from N-BK7 or its Chinese equivalent, H-K9L, making them an excellent choice for most visible and near-infrared applications. As the most common borosilicate crown optical glass, N-BK7 offers exceptional performance at a great value. Its high homogeneity, low bubble and inclusion content, and ease of manufacturability make it an ideal choice for transmissive optics. These laser-grade optical windows feature excellent parallelism of less than 30 arc-seconds, ensuring minimal transmitted beam deviation. They are available with broadband AR coatings on both sides for optimal use in visible or IR applications.

Photonchina BK7 Windows Capability offers both standard and premium options. The standard option includes BK7 grade A optical glass with a diameter tolerance of +0.0, -0.2mm, and a thickness tolerance of ±0.1mm. The premium option offers tighter tolerances with a diameter tolerance of +0.0, -0.1mm, and a thickness tolerance of ±0.01mm. Both options provide a clear aperture of over 90%, with the premium version boasting superior parallelism and surface quality.

UV Fused Silica Optical Windows feature low distortion, excellent parallelism, low bulk scattering, and fine surface quality, making them ideal for a variety of demanding applications such as multiphoton imaging systems and intracavity laser applications. These windows exhibit extremely low bulk scatter and autofluorescence, with high flatness options available. The UV Fused Silica Windows also feature broadband AR coatings suitable for UV, visible, or IR applications.

Photonchina Fused Silica Windows Capability includes both standard and premium grades of UV grade Fused Silica. The standard version offers a diameter tolerance of +0.0, -0.2mm and a thickness tolerance of ±0.1mm, while the premium version provides more precise tolerances of +0.0, -0.1mm and ±0.01mm, respectively. Both versions maintain a clear aperture of over 90%, with the premium option delivering enhanced parallelism and surface quality.