Unmounted, UV Fused Silica Symmetric-Concave Lenses, ARB2-NIR
Excelitas offers an extensive selection of LINOS® unmounted fused silica lenses available in a wide range of focal lengths and diameters, making it easy to identify the ideal components for UV and high‑power optical applications. Only premium materials from trusted manufacturers are used in production, with the tightest possible tolerances to guarantee exceptional quality. Each standard lens features double-sided anti-reflection coatings optimized for the near infrared (NIR) wavelength range for higher transmittance. In addition to the unmounted versions, every lens type is also offered with a high-quality, black-anodized, engraved aluminum mount.
Our unmounted symmetric-concave lenses feature two identical radii of curvature, allowing flexible integration into optical systems. Their narrow focal-length tolerances ensure consistent and reliable optical performance.
The ARB2 NIR broadband anti-reflection coating on fused silica provides high transmission from 725 to 1050 nm. It also offers excellent laser damage resistance, ensuring reliable performance in demanding environments.
ZEMAX files are provided to help streamline optical design and simulation. For custom specifications or large-scale production, contact us for a quote tailored to your technical demands.
Note: f = focal length (object side), f' = focal length (image side) , s = object distance, s' = back focal length, Ø = lens diameter, dm = center thickness, dr = edge thickness, h = primary vertex (h=dm-dr-h'), F, F' = focal points, H, H' = principal points; Tolerances: focal length f: ±2% image distance s': ±2%
Specifications broadband anti-reflective coating ARB2 NIR:
- Guaranteed residual reflection < 0.5 % for angles of incidence 0° ≤ AOI ≤ 15° in the AR range
- Typical average residual reflection < 0.3 % for angles of incidence 0° ≤ AOI ≤ 15° in the AR range
- Damage threshold: H∞ > 30 J / cm² for 11 ns laser pulses (s‑on‑1) at 1064 nm and 10 Hz
- AR range typical: 725–1050 nm
- Design adaptable to the spectral range of 600 nm ≤ λ ≤ 1400 nm and to higher angles of incidence
| Product | Biconcave lens; Fused silica; D=22.4; F=-20 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-40 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-30 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-50 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-100 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-150 [ARB2-NIR] |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm |
| Focal Length (+/-) | -20.0 mm | -40.0 mm | -30.0 mm | -50.0 mm | -100.0 mm | -150.0 mm |
| Optic Substrate | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica |
| Coating | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR |
| Optic Center Thickness | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm |
| Radius of Curvature 1 | -20.535 mm | -40.388 mm | -30.287 mm | -50.481 mm | -101.45 mm | -149.62 mm |
| Radius of Curvature 2 | 20.535 mm | 40.388 mm | 30.287 mm | 50.481 mm | 101.45 mm | 149.62 mm |
| Tolerance thickness | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 8.1 mm | 4.7 mm | 5.7 mm | 4.1 mm | 2.7 mm | 2.3 mm |
| Optic Centering Accuracy (min,sec) | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm |
| Height | 3.3 mm | 1.6 mm | 2.1 mm | 1.3 mm | 0.6 mm | 0.4 mm |
| f' at X nm |
-19.94 mm -20.3 mm -20.89 mm -21.32 mm -22.06 mm -22.59 mm |
-39.46 mm -40.17 mm -41.33 mm -42.17 mm -43.64 mm -44.67 mm |
-29.53 mm -30.06 mm -30.93 mm -31.56 mm -32.66 mm -33.43 mm |
-49.38 mm -50.26 mm -51.72 mm -52.77 mm -54.6 mm -55.89 mm |
-99.49 mm -101.26 mm -104.2 mm -106.3 mm -110.0 mm -112.59 mm |
-146.85 mm -149.46 mm -153.79 mm -156.89 mm -162.34 mm -166.17 mm |
| Coating Specification | Selectable | Selectable | Selectable | Selectable | Selectable | Selectable |
| Part Number | G313330525 | G313332525 | G313331525 | G313333525 | G313334525 | G313335525 |
Made from fused silica for UV and high power applications
Tight manufacturing tolerances for excellent performance and precision mounting
Standard NIR coating: ARB2 NIR (725–1050 nm), designed to maximize transmission across the NIR spectrum
These lenses are supplied unmounted to allow for flexible, custom integration into your optical system
ZEMAX files available, enabling easy system design and simulation
| Product | Biconcave lens; Fused silica; D=22.4; F=-20 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-40 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-30 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-50 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-100 [ARB2-NIR] | Biconcave lens; Fused silica; D=22.4; F=-150 [ARB2-NIR] |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm |
| Focal Length (+/-) | -20.0 mm | -40.0 mm | -30.0 mm | -50.0 mm | -100.0 mm | -150.0 mm |
| Optic Substrate | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica |
| Coating | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR |
| Optic Center Thickness | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm |
| Radius of Curvature 1 | -20.535 mm | -40.388 mm | -30.287 mm | -50.481 mm | -101.45 mm | -149.62 mm |
| Radius of Curvature 2 | 20.535 mm | 40.388 mm | 30.287 mm | 50.481 mm | 101.45 mm | 149.62 mm |
| Tolerance thickness | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 8.1 mm | 4.7 mm | 5.7 mm | 4.1 mm | 2.7 mm | 2.3 mm |
| Optic Centering Accuracy (min,sec) | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm |
| Height | 3.3 mm | 1.6 mm | 2.1 mm | 1.3 mm | 0.6 mm | 0.4 mm |
| f' at X nm |
-19.94 mm -20.3 mm -20.89 mm -21.32 mm -22.06 mm -22.59 mm |
-39.46 mm -40.17 mm -41.33 mm -42.17 mm -43.64 mm -44.67 mm |
-29.53 mm -30.06 mm -30.93 mm -31.56 mm -32.66 mm -33.43 mm |
-49.38 mm -50.26 mm -51.72 mm -52.77 mm -54.6 mm -55.89 mm |
-99.49 mm -101.26 mm -104.2 mm -106.3 mm -110.0 mm -112.59 mm |
-146.85 mm -149.46 mm -153.79 mm -156.89 mm -162.34 mm -166.17 mm |
| Coating Specification | Selectable | Selectable | Selectable | Selectable | Selectable | Selectable |
| Part Number | G313330525 | G313332525 | G313331525 | G313333525 | G313334525 | G313335525 |
Made from fused silica for UV and high power applications
Tight manufacturing tolerances for excellent performance and precision mounting
Standard NIR coating: ARB2 NIR (725–1050 nm), designed to maximize transmission across the NIR spectrum
These lenses are supplied unmounted to allow for flexible, custom integration into your optical system
ZEMAX files available, enabling easy system design and simulation