Unmounted Fused Silica Plano-Concave Lenses, ARB2-NIR
Excelitas offers an extensive selection of LINOS® unmounted fused silica lenses in a wide range of focal lengths and diameters, enabling precise component selection 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 broadband anti-reflection coatings optimized for the near infrared (NIR) wavelength range. In addition to the unmounted versions, every lens type is also offered with a high-quality, black-anodized, engraved aluminum mount.
Our plano-concave lenses are supplied unmounted for flexible integration into your optical system. They provide precise optical performance for applications that require controlled beam divergence. Narrow focal-length tolerances ensure consistent integration and reliable optical behavior. The ARB2 NIR broadband anti-reflection coating on fused silica delivers high transmission from 725 to 1050 nm and offers excellent laser damage resistance, ensuring reliable performance under demanding conditions.
To streamline optical design and simulation, ZEMAX files are provided. For special specifications or production at scale, contact us to request for a quote suited 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 | Plano-Conc. lens; Fused silica; D=25.4; F=-700 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=12.7; F=-20 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=10; F=-16 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=6; F=-10 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-40 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-150 [ARB2-NIR] |
| Shape | Circular | Circular | Circular | Circular | Circular | Circular | Circular | Circular |
| Focal Length (+/-) | -700.0 mm | -20.0 mm | -16.0 mm | -10.0 mm | -40.0 mm | -50.0 mm | -100.0 mm | -150.0 mm |
| Optic Substrate | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica |
| Coating | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR |
| Optic Size | Ø 25.4 mm | Ø 12.7 mm | Ø 10.0 mm | Ø 6.0 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm |
| Optic Center Thickness | 5.8 mm | 4.0 mm | 1.0 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm |
| Radius of Curvature 1 | -349.74 mm | -10.002 mm | -8.175 mm | -5.012 mm | -20.097 mm | -25.483 mm | -50.481 mm | -75.531 mm |
| Radius of Curvature 2 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm |
| Tolerance thickness | ± 0.2 mm | ± 0.2 mm | ± 0.15 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 6.0 mm | 6.0 mm | 2.7 mm | 2.0 mm | 4.9 mm | 4.1 mm | 2.8 mm | 2.3 mm |
| Optic Centering Accuracy (min,sec) | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.13 mm | - 0.11 mm | - 0.09 mm | - 0.09 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm |
| f' at X nm |
-687.72 mm -699.92 mm -720.17 mm -734.64 mm -760.16 mm -778.06 mm |
-19.66 mm -20.01 mm -20.59 mm -21.01 mm -21.74 mm -22.25 mm |
-16.08 mm -16.36 mm -16.83 mm -17.17 mm -17.77 mm -18.19 mm |
-9.85 mm -10.03 mm -10.32 mm -10.53 mm -10.89 mm -11.15 mm |
-39.52 mm -40.22 mm -41.38 mm -42.21 mm -43.68 mm -44.71 mm |
-50.11 mm -51.0 mm -52.47 mm -53.53 mm -55.39 mm -56.69 mm |
-99.27 mm -101.02 mm -103.95 mm -106.04 mm -109.72 mm -112.3 mm |
-148.52 mm -151.16 mm -155.53 mm -158.66 mm -164.2 mm -168.03 mm |
| s at X nm | 19.66 mm | 15.28 mm | 9.36 mm | 37.55 mm | 47.62 mm | 94.33 mm | 141.14 mm | |
| s' at X nm | -22.32 mm | -16.74 mm | -10.52 mm | -40.51 mm | -51.1 mm | -100.26 mm | -149.51 mm |
Made from fused silica for UV and high power applications, offering high damage threshold, low dispersion, and excellent UV transmission.
Tight manufacturing tolerances for excellent performance and precision mounting
Standard broadband 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 | Plano-Conc. lens; Fused silica; D=25.4; F=-700 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=12.7; F=-20 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=10; F=-16 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=6; F=-10 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-40 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; Fused silica; D=22.4; F=-150 [ARB2-NIR] |
| Shape | Circular | Circular | Circular | Circular | Circular | Circular | Circular | Circular |
| Focal Length (+/-) | -700.0 mm | -20.0 mm | -16.0 mm | -10.0 mm | -40.0 mm | -50.0 mm | -100.0 mm | -150.0 mm |
| Optic Substrate | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica |
| Coating | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR |
| Optic Size | Ø 25.4 mm | Ø 12.7 mm | Ø 10.0 mm | Ø 6.0 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm | Ø 22.4 mm |
| Optic Center Thickness | 5.8 mm | 4.0 mm | 1.0 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm |
| Radius of Curvature 1 | -349.74 mm | -10.002 mm | -8.175 mm | -5.012 mm | -20.097 mm | -25.483 mm | -50.481 mm | -75.531 mm |
| Radius of Curvature 2 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm |
| Tolerance thickness | ± 0.2 mm | ± 0.2 mm | ± 0.15 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 6.0 mm | 6.0 mm | 2.7 mm | 2.0 mm | 4.9 mm | 4.1 mm | 2.8 mm | 2.3 mm |
| Optic Centering Accuracy (min,sec) | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.13 mm | - 0.11 mm | - 0.09 mm | - 0.09 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm | - 0.13 mm |
| f' at X nm |
-687.72 mm -699.92 mm -720.17 mm -734.64 mm -760.16 mm -778.06 mm |
-19.66 mm -20.01 mm -20.59 mm -21.01 mm -21.74 mm -22.25 mm |
-16.08 mm -16.36 mm -16.83 mm -17.17 mm -17.77 mm -18.19 mm |
-9.85 mm -10.03 mm -10.32 mm -10.53 mm -10.89 mm -11.15 mm |
-39.52 mm -40.22 mm -41.38 mm -42.21 mm -43.68 mm -44.71 mm |
-50.11 mm -51.0 mm -52.47 mm -53.53 mm -55.39 mm -56.69 mm |
-99.27 mm -101.02 mm -103.95 mm -106.04 mm -109.72 mm -112.3 mm |
-148.52 mm -151.16 mm -155.53 mm -158.66 mm -164.2 mm -168.03 mm |
| s at X nm | 19.66 mm | 15.28 mm | 9.36 mm | 37.55 mm | 47.62 mm | 94.33 mm | 141.14 mm | |
| s' at X nm | -22.32 mm | -16.74 mm | -10.52 mm | -40.51 mm | -51.1 mm | -100.26 mm | -149.51 mm |
Made from fused silica for UV and high power applications, offering high damage threshold, low dispersion, and excellent UV transmission.
Tight manufacturing tolerances for excellent performance and precision mounting
Standard broadband 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