Application: Lighting, Medical, Optical, Photography. Model: RAYTEK-OG-0021#.
Overview
High-Purity Optically Clear Sapphire Glass Windows Lens for Precision Laser Systems is an optical lens in Optical Glass (Sapphire substrate). Listed geometry: thickness 2-3.2mm or Custom Manufacturing, single-lens shape. Optical / electrical data: wavelength 150-5000nm, transmittance >95%. Surface quality 40-20 Scratch-Dig or Custom Manufacturing; flatness 2lambda at 633nm or Custom Manufacturing. Listed for Lighting, Medical, Optical and Photography applications. 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 | Sapphire |
| Shape | Single-lens |
| Thickness | 2-3.2mm or Custom Manufacturing |
| Wavelength Range | 150-5000nm |
| Transmittance | >95% |
| Surface Quality | 40-20 Scratch-Dig or Custom Manufacturing |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | RAYTEK-OG-0021# |
| Lenses Color | Clear |
| Surface Flatness | 2lambda at 633nm or Custom Manufacturing |
| Main Optical Tech Specification | Lens Shape |
| SAW | 0.008 for visible light orthogonal to optical axis |
| SW8 | central 80% of diameter |
| Supplier | Shanghai Rui Tai Photoelectric Technology Co., Ltd. |
Technical data
| Lens Shape | Optical Parallel Window | Surface AccuracyIrregularity | – |
| Lens Material | Sapphire | Surface Accuracy, Power | – |
| Antireflection Coating | Uncoating | Thermal Limit | 22 W m-1 K-1 |
| Coating Type | – | Thermal Expansion Coefficient | 8.4 x 10-6 K-1 |
| Coating Code | – | Edge Finish | Ground and beveled |
| Wavelength Range | 150-5000nm | Birefringence | SAW: 0.008 for visible light orthogonal to optical axis |
| Surface Quality | 40-20 scratch-dig80-50 scratch-dig | Clear Aperture | SW8: central 80% of diameterSAW: central 90% of diameter |
| Surface Flatness | 2λ at 633 nmλ/4 at 633 nm | OEM/ODM | Accepted |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40-20 Scratch-Dig or Custom Manufacturing”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — 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 Boost Yield with Fused Silica Viewports for Vacuum and Optical Systems. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is Fused Silica Glass Wafers (2–12", JGS1/JGS2).
