Biconvex Lens 20mm Diameter 26mm Focal Length Uncoated
SLB-20B-25P
Symmetrical biconvex lenses are most useful when dealing with finite conjugate points. This makes them ideal for 1:1 imaging applications or for use in multi-element systems.
◦There are two types of biconvex 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 | Biconvex Lens 20mm Diameter 26mm Focal Length Uncoated |
|---|---|
| Weight | 0.0500kgs |
| Standard Coatings Available | Yes |
| Guide |
|
| Remark | - |
| Attention |
|
| Diameter φD | 20mm |
| Focal length | 26mm |
| 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) |
φD≧φ10mm ; 20-10 φD＜φ10mm ; 40－20 |
| Wavelength range of Antireflection Coating | Uncoated |
| Diameter φD | φ20mm |
| Focal length f | 26mm |
| Edge thickness te | 2mm |
| Center thickness tc | 6mm |
| Back focal length fb | 24mm |
| Radius of curvature r | 25.95mm |
| Centration | ＜1′ |
In stock
SKU
SLB-20B-25P
€25.90
Symmetrical biconvex lenses are most useful when dealing with finite conjugate points. This makes them ideal for 1:1 imaging applications or for use in multi-element systems.
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