Biconcave Lens 50.8mm Diameter −199.5mm Focal Length 633 - 1064nm
SLB-50.8B-200NIR1
These biconcave lenses are used when a very high negative power is required. They can be used in a multi-element system or alone to produce a diverging cone or virtual image. Sharpe edges, which are common in negative lenses, are removed by beveling to reduce the likelihood of chipping.
◦There are two types of biconvex lenses available; BK7 for use in visible range to infrared wavelength range.
◦Our lenses are listed by outside diameter and focal length to assist your selection according to required specifications.
◦Our lenses are listed by outside diameter and focal length to assist your selection according to required specifications.
Name | Biconcave Lens 50.8mm Diameter −199.5mm Focal Length 633 - 1064nm |
---|---|
Gewicht | 0.0500kgs |
Standardbeschichtungen verfügbar | Nein |
Leitfaden |
|
Anmerkung | - |
Achtung |
|
Durchmesser φD | 50.8mm |
Brennweite | −199.5mm |
Material | BK7 |
Design Wavelength | 546.1nm |
Refractive index n<sub>e</sub> | 1.519 |
Coating | Broadband Multilayer antireflection coating (633 - 1064nm) |
Laser Damage Threshold | 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz) |
Clear aperture | 85% of the diameter |
Surface Quality (Scratch-Dig) | 20-10 |
Wavelength range of Antireflection Coating | 633 - 1064nm |
Diameter φD | φ50.8mm |
Focal length f | −199.5mm |
Edge thickness te | 6.1mm |
Center thickness tc | 3mm |
Back focal length fb | −200.5mm |
Radius of curvature r | 207.6mm |
Centration | <1′ |
Auf Lager
SKU
SLB-50.8B-200NIR1
126,30 €
These biconcave lenses are used when a very high negative power is required. They can be used in a multi-element system or alone to produce a diverging cone or virtual image. Sharpe edges, which are common in negative lenses, are removed by beveling to reduce the likelihood of chipping.