Quartz Windows
PRODUCT CATEGORIES
INOUIRY
UV fused silica operates from 190nm-2100nm. Compared with N-BK7, UV fused silica has a lower refractive index, better uniformity and lower thermal expansion coefficient at a given wavelength. The loss of each surface of the uncoated window is 4%, and the anti-reflection coating reduces the surface loss to Ravg<0.5%. When the incident angle is between 0° and 30°, the anti-reflection coating has ideal performance. And compared with natural quartz, it has a very low fluorescence level, making it an ideal choice for applications in the ultraviolet to near-infrared band.
UV fused silica high-precision flat windows are parallel plane plates, usually used as protective films for electronic sensors or external environment detectors. Available in uncoated and four broadband AR coating versions: UV (250-425nm), VIS (350-700nm), NIR (600-1100nm) or SWIR (900-1700nm).
Common materials include China JGS1, JGS2, JGS3, Corning 7980, Japan OHARA SK-1300 and Germany Schott BF33.
Customized Quartz Window Technical Parameters
Material: JGS1; JGS2; JGS3; Corning 7980; Japan OHARA SK-1300 and Germany Schott BF33.
Processable size: 5-800mm
Outer tolerance: +0.0/-0.05mm
Thickness tolerance: ±0.1mm
Surface shape: λ/2-λ/30 (Customization)
Parallelism: <5″-30″
Smoothness: 40-20; 20-10; 10-5 (Customization)
Effective aperture: >90%
Chamfer: <0.2×45°
Coating: AR
A: 250-400nm
B: 350-700nm
C: 600-1100nm
D: 900-1700nm
Quartz Transmittance Curves
Optical Quartz Flat Circular Window Plate Current Inventory Parameters：
UV fused silica standard precision flat window is a parallel plane plate, usually used as a protective film for electronic sensors or external environment detectors.
Five models are available in the following sizes: (1) uncoated; (2) UV film (250-400nm); (3) VIS film (350~700nm); (4) NIR film (600~1100nm); (5) SWIR film (900~1700nm).
| Diameter (mm) | Thickness (mm) |
|---|---|
| 5 | 2 |
| 10 | 2 |
| 12.5 | 3 |
| 12.7 | 3 |
| 20 | 3 |
| 20 | 6 |
| 25 | 6 |
| 25.4 | 6 |
| 30 | 10 |
| 38.1 | 10 |
| 50 | 50 |
| 50.8 | 10 |
| Substrate Material | UV fused silica |
|---|---|
| Diameter Error | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.2 mm |
| Parallelism Error | <30″ or <5″ |
| Surface Accuracy | λ/4 or λ/10 @ 633 nm |
| Surface Quality | 60-40 or 20-10 |
| Bevel | 0.2~0.5mm×45° |
Optical Planar Quartz Brewster Window
The fused silica Brewster window utilizes the total reflection property of the material. When the incident light is incident at a specific incident angle (called the Brewster angle of the material), the S polarization component of the incident light is partially reflected, while the P component is almost completely transmitted.
Five models are available in the following sizes: (1) uncoated; (2) UV film (250-400nm); (3) VIS film (350~700nm); (4) NIR film (600~1100nm); (5) SWIR film (900~1700nm).
| Minor Axis (A) mm | Major Axis (B) mm | Thickness (mm) | Coating |
|---|---|---|---|
| 10 | 17.69 | 2 | No |
| 12.5 | 22.11 | 2 | No |
| 16 | 28.23 | 2 | No |
| 20 | 35.37 | 2 | No |
| 25 | 44.21 | 2 | No |
| Substrate Material | UV fused silica |
|---|---|
| Parallelism error | <5″ |
| Thickness Tolerance | ±0.2 mm |
| Diameter (minor axis) error | +0.0/-0.1 mm |
| Surface Accuracy | λ/10@633nm |
| Surface Quality | 20-10 |
| Bevel | 0.2~0.5mm×45° |
| Brewster Angle | 55°34′@633nm |
| Damage Threshold | >20J/cm², 20ns, 20Hz, 1064nm |
- P light has zero reflection loss;
- S light has about 20% reflection;
- High damage threshold;
- Mostly used in laser cavities.
Quartz Flat Wedge Window
UV fused silica high-precision wedge windows (prisms) are often used to deflect the incident light beam to a specified direction at an agreed deflection angle. When used in pairs, the outgoing light beam can be positioned in any direction within an angle cone with the incident light beam as the axis through the relative rotation of the two wedges.
Five models are available in the following sizes: (1) uncoated; (2) UV film (250-400nm); (3) VIS film (350~700nm); (4) NIR film (600~1100nm); (5) SWIR film (900~1700nm).
| Diamter (mm) | Thickness (mm) |
|---|---|
| 12.5 | 3 |
| 12.7 | 3 |
| 25 | 6 |
| 25.4 | 6 |
| 38.1 | 10 |
| 50 | 10 |
| 50.8 | 10 |
| Substrate Material | UV fused silica |
|---|---|
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.2 mm |
| Surface Accuracy | λ/10@633 nm |
| Row 3, Content 1 | Sample #3 |
| Wedge Angle | 30′ ±10′ |
| Surface Quality | 20-10 |
| Chamfer | 0.2~0.5mm×45° |
Quartz High Precision Parallel Flat Crystals
There are two types of fused quartz high-precision optical parallel flat crystals: single-sided flat crystals and double-sided flat crystals.
Single-sided flat crystals fused quartz high-precision single-sided optical flat crystal has been precisely ground and polished, and its flatness accuracy is very high. It is often used as a standard plane to detect and identify the flatness error and grinding performance of other components with high gloss surfaces.
Double-sided flat crystals fused quartz high-precision double-sided optical flat crystal have been precisely ground and polished. Both the upper and lower surfaces have high flatness accuracy and high parallelism. Any side can be used as a standard plane, which is often used to detect and identify the flatness error and grinding performance of other components with high gloss surfaces.
| Diameter (mm) | Thickness (mm) |
|---|---|
| 25.4 | 12.7+-1 |
| 50.8 | 12.7+-1 |
| 76.2 | 19.1+-1 |
| 101.6 | 19.1+-1 |
| 152.4 | 25.4+-2 |
| 203.2 | 38.1+-2 |
| 254 | 38.1+-2 |
| 304.8 | 38.1+-2 |
| Material | Material |
|---|---|
| Parallelism | <1′ or 2′ |
| Thickness Tolerance | +-0.2mm |
| Dimension Tolerance | +-1 or 2mm |
| Surface Accuracy | λ/10 or λ/20@633nm |
| Surface Quality | 40/20 or 60/40 |
| Chamfer | 0.2~0.5mm×45° |
We have a small amount of stock now. If you are interested, please contact the sales team: info@borisuns.com
