Import Bk7 Optical Windows — Buy in wholesale FOB from Supplier in China

These BK7 optical windows from Shenyang Yibeite Optics are precision components manufactured from Schott BK7 optical glass, a borosilicate crown glass valued for its homogeneous refractive index and low bubble content. The listed dimensions adhere to a tolerance of +0.0/-0.1 mm, with thickness controlled to ±0.1 mm, ensuring tight fitment in optical assemblies. Surface accuracy is specified at λ/4 at 632.8 nm, a standard for laser and imaging applications where wavefront distortion must be minimised.

The optical windows feature a surface quality rating of 20-10, indicating a scratch-dig specification where 20 represents the maximum scratch width in micrometres and 10 the maximum dig diameter in hundredths of a millimetre, suitable for demanding environments. Parallelism is held to 90%, a critical parameter for beam steering and interferometry setups. Bevelling is applied to edges to prevent chipping, a typical finishing step for optical elements subject to handling or mounting stress. BK7 is a standard material in the visible to near-infrared spectrum, offering a refractive index of approximately 1.517 at 587.6 nm.

These windows are used in laser systems, microscopy, and environmental chambers where transmission and durability are paramount. Buyers in the defence, aerospace, and medical sectors often source BK7 components for their balance of cost and performance. Trade terms such as MOQ, packaging, and incoterms are not specified in the listing; confirmation with the supplier is required. The supplier’s focus on precision optical components suggests capability in custom geometries and coatings upon request.

Shenyang Yibeite Optics Co., Ltd. is a manufacturer of precision optical components, including lenses, windows, mirrors, prisms, and filters. Based in Shenyang, Liaoning, China, the company operates from an address on Xinghai Road in the Economic and Technological Development Zone. Its product range spans optical materials such as fused silica, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (Ge), silicon (Si), and sapphire, in addition to BK7 glass.

The supplier offers optical system design and production of related accessories, with products distributed to multiple countries and regions. Coating capabilities include anti-reflective (AR) coatings, high-reflection films, beam splitters, and metal films. The company’s trust tier is classified as harbor, but no response rate or average response time data is provided in the listing.