Bi-Concave Lens (BCC)
Bi-concave lenses, Negative magnification
- Focusing or optical imaging
- Focal Length: f = – R / 2 (n-1)
Bi-concave lenses are useful for a wide range of beam expansion or negative imaging applications. These lenses are manufactured from BK7A or UV Fused Silica. These bi-concave lenses may be combined with other lenses to form complex imaging systems. Lenses are supplied uncoated. Anti-reflection coatings are available. Please contact the Lambda’s sales team for more coating information.
Material: |
BK7A or UV Grade Fused Silica |
Surface Flatness: |
< λ / 10 @ 633 nm |
Surface Quality: |
<10/5 (both sides) |
Centration Error: |
< 3 arc min |
Focal Length Tolerance: |
< Typical ± 0.5% |
Diameter Tolerance: |
< + 0.00 / – 0.20 mm |
Thickness Tolerance: |
< ± 0.25 mm |
Clear Aperture: |
> 85% of diameter |
Bi-Concave Lens (BCC)