Optical windows are applied to isolate different sical environments while allowing light to pass. When selecting flat window you should consider materials, transmission, scattering, wave front distortion, parallelism and resistance to certain environment. JUKA Optical offers a wide range of different materials and different degree of precision optical window glass, such as bk7 window, UV fused silica window, quartz window, znse window,etc.
| 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 | Melt controlled |
| vd | ±0.8% | ±0.3% | Melt controlled | |
| Dimension Tolerance (mm) | ±0.20 | ±0.10 | +0.01/-0.01 | |
| Thickness Tolerance (mm) | ±0.20 | ±0.1 | ±0.005 | |
| Scratch-Dig | 80-50 | 60-40 | 10-5 | |
| 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 | 10 second | |
| Bevel | 0.3±0.20mmx45°or upon requirement | No bevel | ||
| Coating | Coating may be available by custom order | |||
Part No. Round: J(JUKA)01(window)-R(round)-φ(diameter)-T(thickness) square: J(JUKA)01(window)-S(square)-A(length)-B(width)-T (thickness)
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