Product type: Flat Lens. Application: Optical. Model: RT-NK1574.
Overview
CaF2 Windows/157nm CaF2 Windows/Laser Lens/Flat Window Glass: an optical lens made from CaF2. Listed geometry: diameter 25.4mm(1"), thickness 5.0mm, single-lens shape. Optical / electrical data: wavelength 157nm, transmittance 99.5%. Supplied uncoated. Typical applications: Optical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | CaF2 |
|---|---|
| Type | Flat Lens |
| Shape | Single-lens |
| Diameter | 25.4mm(1") |
| Thickness | 5.0mm |
| Wavelength Range | 157nm |
| Transmittance | 99.5% |
| Coating | Uncoated |
| Clear Aperture | ≥φ22.86 mm |
| Usage | Optical |
| Model NO. | RT-NK1574 |
| Lenses Color | Clear |
| Supplier | Shanghai Rui Tai Photoelectric Technology Co., Ltd. |
Technical data
| Items | RT-NK1578 |
|---|---|
| Diameter | 25.4 mm(1") |
| Diameter Tolerance | +0.0 / -0.1 mm |
| Thickness | 5.0 mm |
| ThicknessTolerance | ±0.1 mm |
| Clear Aperture | ≥Ø22.86 mm |
| Parallelism | ≤10 arcsec |
| Surface Flatness | ≤λ/4 Full Clear Aperture |
| Surface Quality | 40-20 Scratch-Dig |
| Wavelength Range | 157nm |
| Substrate | NICF-V CaF2 |
What to specify when you request a quote
- Material — listed as “CaF2”; name the glass or crystal.
- Geometry — listed as “25.4mm(1")”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Uncoated”; list the band and reflectance or transmission target.
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 Optical Glass Polishing for High Clarity Surfaces. For an application example, read How to Handle and Maintain Precision Glass Components in Laser Systems. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
