Specifications

1 High Precision
2 Competitive Price
3 Quick Delivery
4 Custom Size Available

 

 

 Optical Windows

 

Description

Optical window refers to a piece of transparent optical material that allows light into an optical instrument. They are pieces of optical glasses with ground and polished faces that are relatively parallel. Optical windows are applied for protecting fragile optical components inside an equipment, they are adopted to isolate two physical environments while allowing light to pass. A window is usually parallel and is likely to be anti-reflection coated, and may be built into a piece of equipment, such as a vacuum chamber, to allow optical instruments to view inside that equipment.

 

A wide range of materials could be applied due to varies demands: BK7, Fused silica, Sapphire, Quartz, Silicon, MgF2, CaF2, ZnSe, etc.

Material Properties Applications BK7 Transmission Range: 330-2100nm Refractive Index: 1.5164@588nm Most popular and low cost Visible and near IR spectrum applications Fused Silica Transmission Range: 185-2500nm Refractive Index: 1.4858@308nm Low Thermal Expansion Coefficient: 0.54 x 10-6K UV to IR spectrum Best choice for thermal resistance application. Sapphire Transmission Range: 180-4500nm Refractive Index: 1.755@1000nm Strong Hardness Best choice for scratch resistance applications  Thinner optics Wide Transmission Range Calcium Fluoride Transmission Range: 170-7800nm Refractive Index: 1.399@5000nm Little Hygroscopic Susceptibility High Thermal Expansion Coefficient: 18.85 x 10-6K IR laser applications MgF2 Transmission Range: 120-7000nm Refractive Index: 1.376@700nm UV laser applications

 

Standard Specification

• Material: BK7 grade A optical glass
• Diameter Tolerance: +0.0, -0.1mm
• Thickness Tolerance: ± 0.2mm
• Clear Aperture> 85%
• Parallelism<1 arc minute
• Surface Quality: 60-40 scratch and dig
• Flatness: λ/4 per 25mm @632.8nm
• Wavefront Distortion: λ/4 per 25mm @632.8nm
• Bevel: 0.25mm x 45°

High precision specification and coaitng are available upon request.

 

 

About Supplier

 

Sdhengjing optics offers custom manufacturing of optical windows at very competitive price.  Monthly output is more than 100,000pcs of windows. We are specialized in the production of various specifications of optical components according to the customers' demand,  And we are committed our standard more than eight years to offering our customers with excellent products, reasonable prices and high level of service. We can offer special size and coating are available upon request.