概述
- Material: UV fused silica
- Machinable diameter: Ø1-Ø500mm
- Focal length range: 4.5-1000mm
- Wavelength range: 185nm-2.1μm (uncoated), 250-350nm (UV broadband anti-reflection film)
The external convex curvature of UV Fused Silica Negative Meniscus Lenses is less than that of the inner concave radius, and the focal length is negative, which can reduce the three-level spherical aberration. When combined with another lens, a negative meniscus lens can increase the focal length and thus reduce the numerical aperture (NA). When used to diverge light, to minimize spherical aberration, light should enter from the convex surface of the lens.
UV negative meniscus lenses are based on UV fused silica, which is ideal for applications in the UV to near-infrared bands due to the high transmittance provided by UV silica in the deep UV region and its very low fluorescence level compared to natural quartz with little to no laser-induced fluorescence. In addition, compared with K9 glass, it has a wider spectral range (185-2100nm), better homogeneity, and a lower coefficient of thermal expansion.
Dimension-Labs offers a wide range of sizes of uncoated UV negative meniscus lenses (specific sizes and parameters can be filtered from the details below) and a reflection enhancement film (UV broadband anti-reflection film) to meet the variety of applications you need.
General parameters
| Material | UV Fused Silica | Effective aperture | >90% |
| Face | λ/4@632.8nm | Finish | 40-20 |
| Design wavelength(nm) |
587.6 |
Focal length tolerance | ±1% |
| Form Tolerance(mm) |
+0.0/-0.1 |
Thickness tolerance(mm) |
±0.1 |
| Eccentricity | ＜3ˊ |
Inverted side | ＜0.2×45° |
UV negative meniscus lens, uncoated（185-2100nm）
● Optical component material: UV fused silica ● Working wavelength: 185-2100nm (uncoated) ● Multiple diameters and focal lengths are available ● Usage: Imaging, beam expansion, convergence
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UV negative meniscus lens，UV（250-350nm）
● Optical component material: UV fused silica ● Working wavelength: 250-350nm ● Multiple diameters and focal lengths are available ● Usage: Imaging, beam expansion, convergence
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