OPTICS
Biconvex Lenses
SLB-B-P/SLSQ-B-P
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.
Optics & Optical Coatings
- There are two types of biconvex lenses available; BK7 for use in visible range to infrared wavelength range and synthetic fused silica for wavelengths less than 350nm ultraviolet light.
- 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.
Key Specifications
| Material | SLB: BK7 SLSQ: Synthetic fused silica |
| Design wavelength | 546.1nm |
| Refractive index | BK7: ne=1.519 Synthetic fused silica: ne=1.460 |
| Coating | Uncoated: the end of the part number ‘P’ Anti-reflection coating: the end of the part number ‘PM’, ‘PIR1’, ‘PIR2’ |
| Laser Damage Threshold | Anti-reflection coating: 4J/c㎡ Laser pulse with 10ns, repetition frequency 20Hz |
| Clear aperture | 90% of actual aperture: Uncoated 85% of actual aperture: with coating, φ10≦D 83% of actual aperture: with coating, D＜φ10 |
| Surface Quality (Scratch–Dig) | 20–10 φ10≦D 40–20 D＜φ10 |
