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Precision Grade Windows are optically flat components that have two opposite polished faces and are used to protect internal components within an instrument. Precision Grade Optical Windows are used in a variety of industries, and Oplens has been supplying custom and stock precision grade optical windows for the aerospace industry, military and commercial avionics, scientific and medical instrumentation, academic and research, and industrial applications.
Precision grade windows are available in a variety of shapes, sizes, and coatings, designed to meet your specific application.
Optical Window Substrate/Material:
BK7 and Fused silica typically, Visible optical glass,Infrared optical glass
Precision Grade Windows Shape:
We have the ability to provide customized shapes, such as round, rectangular, etc.
Our precision optical windows are polished to λ per 25mm, λ/4 or λ/20 and are available uncoated or coated. Custom coatings are available upon request.
Material | BK7 and Fused silica typically, Visible optical glass,Infrared optical glass, Colored glass. | |||
| Tolerances | Low precision | Standard precision | High precision | |
| Glass Quality | nd | ±0.001 | ±0.0005 | ±0.0001 |
| vd | ±0.8% | ±0.3% | ±0.1% | |
| Dimension Tolerance（mm） | ±0.20 | ±0.10 | +0.01/-0.01 | |
| Thickness Tolerance（mm） | ±0.20 | ±0.1 | ±0.005 | |
| Scratch—Dig | V（80—50） | IV（60—40） | II（20—10） | |
| Wave front Distortion 632.8nm | λ per 25mm | λ /4per 25mm | λ /20 per 25mm | |
| Clear Aperture | 80% | 90% | 100% | |
| Parallelism (arc min) | 3-5 minutes | 1 minutes | ＜1 second | |
| Bevel | 0.3±0.20mm×45° or upon requirement | |||
| Coating | Coating may be available by custom order | |||
More about Precision Grade Windows information,you can contact our Technical staff.
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