LD2297 In Stock
Description: Ø25.4 mm Uncoated N-SF11 Bi-Concave Lens with -25.0 mm Focal Length
| Part Number | LD2297 |
|---|---|
| Category | Optics |
| Manufacturer | ThorLabs |
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The LD2297 by ThorLabs is a premium-quality bi-concave lens crafted from a superior N-SF11 substrate. Designed to offer unparalleled performance and versatility, the LD2297 is uncoated and boasts a broad wavelength range of 420 nm - 2.3 μm.
Featuring a negative focal length, the LD2297 is an ideal choice for diverging a converging beam. With its plano-concave design, this bi-concave lens can effectively diverge a collimated beam to a virtual focus, making it a perfect fit for Galilean-type beam expanders. Compared to N-BK7 lenses, the LD2297's N-SF11 substrate offers higher dispersion. The LD2297 lens also boasts a spherical surface irregularity of λ/4, ensuring exceptional optical quality and superior imaging performance.
| Diameter | 1" |
| Focal Length | -25.0 mm |
| Diopter | -40.0 |
| Radius of Curvature | -39.6 mm |
| Center Thickness | 3.0 mm |
| Edge Thickness | 7.2 mm |
| Back Focal Length | -25.6 mm |
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Warranty:
Refurbished - 2 year warranty
New Surplus - 3 year warranty