Product type: Optical Windows. Application: Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc. Model: OS-0127.
Overview
Custom Optical Round Glass Window K9/Bk7/Baf2/CaF2/Mgf2/Fused Silica/Sapphire Infrared Glass: a fused silica / quartz window in Optical Glass (Barium Fluoride substrate). Listed geometry: thickness 2-3.2mm or Custom Manufacturing, single-lens shape. Optical / electrical data: wavelength 150-5000nm, transmittance >95%. Supplied uncoated; surface quality 40-20 Scratch-Dig or Custom Manufacturing. It is used in Lighting, Medical, Optical, Photography and Laser. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Substrate | Barium Fluoride |
| Type | Optical Windows |
| Shape | Single-lens |
| Thickness | 2-3.2mm or Custom Manufacturing |
| Wavelength Range | 150-5000nm |
| Transmittance | >95% |
| Coating | Uncoating |
| Surface Quality | 40-20 Scratch-Dig or Custom Manufacturing |
| Usage | Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc |
| Model NO. | OS-0127 |
| Lenses Color | Clear |
| Broad-Spectrum High Transmittance | Consistent high transmittance across ultraviolet, visible and infrared full spectral ranges. |
| Low Spectral Dispersion | Ideal for aberration and color correction in high-precision optical systems. |
| Gamma Radiation Resistance | Verified by transmission testing, BaF2 shows high resistance to gamma radiation, making it a superior choice for space-borne optical instruments. |
| Supplier | C-Laser (Taicang) Material Technology Co., Ltd. |
Technical data
| Material | BaF2 |
|---|---|
| Density (g/cm3) | 4.89 |
| Index of Refraction | 1.48 |
| Operating Temperature (°C) | Max 800 |
| Wavelength Range (nm) | 200 – 12000 |
| Coefficient of Thermal Expansion CTE (10-6/°C) | 18.1 |
| Surface Quality | 60-40 |
| Parallelism | ≤ 3 arcmin |
| Clear aperture | >90% |
What to specify when you request a quote
- Material and grade — listed as “Optical Glass”; name the glass or crystal grade (for example JGS1, N-BK7, Borofloat 33, sapphire) because it fixes the transmission band and thermal limits.
- Diameter or outline — give the nominal size and the tolerance you can accept.
- Thickness — listed as “2-3.2mm or Custom Manufacturing”; state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — listed as “40-20 Scratch-Dig or Custom Manufacturing”; quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — listed as “Uncoating”; list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see Fused Silica Windows for UV and Laser Optical Systems. How parts like this are machined and finished is covered in Chalcogenide Glass Coating for IR Optical Components. For an application example, read Infrared Window Glass for Smart Home Appliance Sensors. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
