These simple negative lenses have many uses. Alone they form a virtual image of a distant object or collimated light source. Used in combination with other optics they reduce the power of the system. Sharp edges which are common in negative lenses are removed by beveling in order to reduce the likelihood of chipping.
◦There are three types of plano concave lenses available; BK7 for use in visible range to infrared wavelength range.
◦BK7 lenses are also available with three types of anti-reflection coatings, visible wavelength range, in the near-infrared range and in the infrared range.
◦Our lenses are listed by outside diameter and focal length to assist your selection according to required specifications.
◦BK7 lenses are also available with three types of anti-reflection coatings, visible wavelength range, in the near-infrared range and in the infrared range.
◦Our lenses are listed by outside diameter and focal length to assist your selection according to required specifications.
| Name | Plano Concave Lens 50mm Diameter −90mm Focal Length Uncoated |
|---|---|
| Gewicht | 0.0500kgs |
| Standardbeschichtungen verfügbar | Ja |
| Leitfaden |
|
| Anmerkung | - |
| Achtung |
|
| Durchmesser φD | 50mm |
| Brennweite | 90mm |
| Material | BK7 |
| Design Wavelength | 546.1nm |
| Refractive index n<sub>e</sub> | 1.519 |
| Coating | Uncoated |
| Clear aperture | 90% of the diameter |
| Surface Quality (Scratch-Dig) | 20-10 |
| Wavelength range of Antireflection Coating | Uncoated |
| Diameter φD | φ50mm |
| Focal length f | −90mm |
| Edge thickness te | 10.3mm |
| Center thickness tc | 3mm |
| Back focal length fb | −92.0mm |
| Radius of curvature r | 46.71mm |
| Centration | ＜1′ |
Auf Lager
SKU
SLB-50-90N
58,90 €
These simple negative lenses have many uses. Alone they form a virtual image of a distant object or collimated light source. Used in combination with other optics they reduce the power of the system. Sharp edges which are common in negative lenses are removed by beveling in order to reduce the likelihood of chipping.
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