PRODUCT CATEGORIES
INOUIRY
- The N-BK7(K9) plano-concave lens can diverge a collimated beam from a virtual focal point and is commonly used in Galilean beam expanders. Plano-concave lenses have negative focal length and negative spherical aberration, which can be used to compensate for aberrations in other lenses within the system.
These plano-convex lenses are also available in uncoated versions and versions with three broadband antireflective coatings: A-coating (350-700 nm), B-coating (650-1100 nm), or C-coating (1050-1700 nm).
Technical parameters with K9 Plano Concave Lens VIS Coated
| Substrate Material | H-K9L | Diameter | 5-800mm |
|---|---|---|---|
| Diameter Tolerance | +0.0/-0.1 mm | Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±1% | Clear Aperture | >90% |
| Design Wavelength | 587.6 nm | Refractive Index | 1.5168 |
| Surface Quality | 60/40-20/10 | Surface Accuracy | λ/4- λ//8 |
| Lens Centering Error | <3' | Coated | Uncoated, VIS, NIR, SWIR |
spectral curve with H-K9L Plano Concave Lenses 400-700nm Coated
H-K9L Plano Concave Lens Inventory Informations
| Diameter (mm) | Focal Length (mm) | Center Thickness (mm) | Edge Thickness (mm) | Coating |
|---|---|---|---|---|
| 6 | -9.8/-18-24 | 1/2 | 1.98/2.5/2.4 | NO/ VIS/ NIR/ SWIR |
| 9 | -27 | 2 | 2.7 | NO/ VIS/ NIR/ SWIR |
| 12.7 | -25/-30/-50 | 3/3.5 | 4.7/4.4/4.3 | NO/ VIS/ NIR/ SWIR |
| 25 | -50/-75/-100 | 3.5/4 | 6.7/5.6/5.5 | NO/ VIS/ NIR/ SWIR |
| 25.4 | -50/-75/-100/-150 | 3.5/4 | 6.9/5.6/5.6/5.05 | NO/ VIS/ NIR/ SWIR |
| 25.4 | -200/-300/-600/-1000 | 4.21/4.48/4.74/4.84 | 5 | NO/ VIS/ NIR/ SWIR |
| 50.8 | -75/-100/-150 | 3.5/4 | 13/10.7/8.3 | NO/ VIS/ NIR/ SWIR |
If you need to order in stock or custom Plano Concave lenses, please kindly contact our sales team:
info@borisuns.com/ jessie@borisuns.com
