Unmounted N-BK7 Plano-Concave Lenses, ARB2-NIR
Excelitas offers unmounted LINOS® N-BK7 Plano-Concave Lenses that enable flexible integration into a wide range of optical systems. Tight focal length tolerances support straightforward system alignment and consistent optical performance. Designed for applications requiring accurate beam control, these lenses provide reliable focusing characteristics. The ARB2 NIR broadband anti-reflection coating ensures high transmission across the near infrared (NIR) wavelength range, while offering excellent resistance to laser-induced damage.
Our plano-concave lenses are supplied unmounted for flexible integration into your optical system. Their narrow focal-length tolerances ensure consistent performance and reliable optical behavior. These lenses deliver precise results in applications requiring controlled beam divergence. Each standard lens features double-sided anti-reflection coatings optimized for the near infrared (NIR) wavelength range for higher transmittance.
ZEMAX files are offered to facilitate efficient optical design and simulation. For custom specifications or higher-volume production, contact us for a tailored quote to meet your requirements.
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 HzAR 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; N-BK 7; D=12.7; F=-1000 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-150 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=6; F=-6 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=3; F=-3 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=8; F=-8 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-30 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-500 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-200 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=6; F=-10 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=10; F=-16 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=10; F=-10 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-200 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-40 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-1000 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-500 [ARB2-NIR] |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm | Ø 6.0 mm | Ø 3.0 mm | Ø 8.0 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 22.4 mm | Ø 25.4 mm | Ø 6.0 mm | Ø 10.0 mm | Ø 10.0 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 22.4 mm | Ø 25.4 mm | Ø 25.4 mm | Ø 25.4 mm | Ø 25.4 mm | |
| Focal Length (+/-) | -150.0 mm | -100.0 mm | -6.0 mm | -3.0 mm | -8.0 mm | -50.0 mm | -30.0 mm | -500.0 mm | -50.0 mm | -200.0 mm | -10.0 mm | -16.0 mm | -10.0 mm | -200.0 mm | -100.0 mm | -40.0 mm | -100.0 mm | -50.0 mm | -1000.0 mm | -500.0 mm | |
| Optic Substrate | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | |
| 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 | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | 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 Center Thickness | 1.5 mm | 1.5 mm | 0.5 mm | 0.5 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.0 mm | 1.5 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | |
| Radius of Curvature 1 | -78.298 mm | -52.33 mm | -3.101 mm | -1.55 mm | -4.134 mm | -26.039 mm | -15.51 mm | -260.39 mm | -26.039 mm | -104.41 mm | -5.012 mm | -8.475 mm | -5.168 mm | -102.92 mm | -51.212 mm | -20.833 mm | -51.212 mm | -26.039 mm | -523.3 mm | -260.39 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 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -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 | ± 0.02 mm | ± 0.02 mm | ± 0.02 mm | ± 0.1 mm | ± 0.1 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.1 mm | ± 0.2 mm | ± 0.02 mm | ± 0.1 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | |
| Optic Edge Thickness | 2.3 mm | 2.7 mm | 2.82 mm | 1.66 mm | 4.09 mm | 2.3 mm | 2.9 mm | 1.6 mm | 4.0 mm | 2.2 mm | 2.0 mm | 3.1 mm | 4.86 mm | 1.7 mm | 1.9 mm | 4.8 mm | 3.1 mm | 4.8 mm | 1.7 mm | 1.8 mm | |
| Optic Centering Accuracy (min,sec) | 10.0 ' | 10.0 ' | 10.0 ' | 20.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | |
| Tolerance of optic size | - 0.13 mm | - 0.13 mm | - 0.02 mm | - 0.02 mm | - 0.02 mm | - 0.12 mm | - 0.12 mm | - 0.12 mm | - 0.13 mm | - 0.15 mm | - 0.09 mm | - 0.09 mm | - 0.02 mm | - 0.12 mm | - 0.12 mm | - 0.13 mm | - 0.15 mm | - 0.15 mm | - 0.15 mm | - 0.15 mm | |
| f' at X nm |
-150.99 mm -152.0 mm -154.52 mm |
-100.88 mm -101.59 mm -103.27 mm |
-5.98 mm -6.02 mm -6.12 mm |
-2.99 mm -3.01 mm -3.06 mm |
-7.97 mm -8.03 mm -8.16 mm |
-50.2 mm -50.53 mm -51.4 mm |
-29.9 mm -30.11 mm -30.61 mm |
-502.0 mm -505.5 mm -514.0 mm |
-50.2 mm -50.55 mm -51.39 mm |
-201.3 mm -202.7 mm -206.1 mm |
-9.66 mm -9.73 mm -9.89 mm |
-16.34 mm -16.45 mm -16.73 mm |
-9.96 mm -10.03 mm -10.2 mm |
-198.41 mm -199.8 mm -203.1 mm |
-98.73 mm -99.43 mm -101.1 mm |
-40.16 mm -40.44 mm -41.11 mm |
-98.73 mm -99.43 mm -101.1 mm |
-50.2 mm -50.53 mm -51.4 mm |
-1009.0 mm -1018.0 mm -1033.0 mm |
-502.0 mm -505.5 mm -514.0 mm |
|
| s' at X nm | -152.5 mm | -102.25 mm | -6.33 mm | -3.33 mm | -8.66 mm | -51.38 mm | -31.0 mm | -504.88 mm | -51.38 mm | -203.03 mm | -10.36 mm | -17.39 mm | -10.66 mm | -200.15 mm | -100.99 mm | -41.3 mm | -100.09 mm | -5138.0 mm | -1013.6 mm | -504.86 mm | |
| Part Number | G314336525 | G314317525 | G314316525 | G314001525 | G314000525 | G314002525 | G314332525 | G314331525 | G314335525 | G314315525 | G314323525 | G314304525 | G314305525 | G314003525 | G314334525 | G314333525 | G314301525 | G314322525 | G314321525 | G314325525 | G314324525 |
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 | Plano-Conc. lens; N-BK 7; D=12.7; F=-1000 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-150 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=6; F=-6 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=3; F=-3 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=8; F=-8 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-30 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-500 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-200 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=6; F=-10 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=10; F=-16 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=10; F=-10 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-200 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=12.7; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=22.4; F=-40 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-100 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-50 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-1000 [ARB2-NIR] | Plano-Conc. lens; N-BK 7; D=25.4; F=-500 [ARB2-NIR] |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm | Ø 6.0 mm | Ø 3.0 mm | Ø 8.0 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 22.4 mm | Ø 25.4 mm | Ø 6.0 mm | Ø 10.0 mm | Ø 10.0 mm | Ø 12.7 mm | Ø 12.7 mm | Ø 22.4 mm | Ø 25.4 mm | Ø 25.4 mm | Ø 25.4 mm | Ø 25.4 mm | |
| Focal Length (+/-) | -150.0 mm | -100.0 mm | -6.0 mm | -3.0 mm | -8.0 mm | -50.0 mm | -30.0 mm | -500.0 mm | -50.0 mm | -200.0 mm | -10.0 mm | -16.0 mm | -10.0 mm | -200.0 mm | -100.0 mm | -40.0 mm | -100.0 mm | -50.0 mm | -1000.0 mm | -500.0 mm | |
| Optic Substrate | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | N-BK7 | |
| 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 | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | ARB 2 NIR | 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 Center Thickness | 1.5 mm | 1.5 mm | 0.5 mm | 0.5 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.0 mm | 1.5 mm | 1.0 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | |
| Radius of Curvature 1 | -78.298 mm | -52.33 mm | -3.101 mm | -1.55 mm | -4.134 mm | -26.039 mm | -15.51 mm | -260.39 mm | -26.039 mm | -104.41 mm | -5.012 mm | -8.475 mm | -5.168 mm | -102.92 mm | -51.212 mm | -20.833 mm | -51.212 mm | -26.039 mm | -523.3 mm | -260.39 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 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm | -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 | ± 0.02 mm | ± 0.02 mm | ± 0.02 mm | ± 0.1 mm | ± 0.1 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.1 mm | ± 0.2 mm | ± 0.02 mm | ± 0.1 mm | ± 0.1 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm | |
| Optic Edge Thickness | 2.3 mm | 2.7 mm | 2.82 mm | 1.66 mm | 4.09 mm | 2.3 mm | 2.9 mm | 1.6 mm | 4.0 mm | 2.2 mm | 2.0 mm | 3.1 mm | 4.86 mm | 1.7 mm | 1.9 mm | 4.8 mm | 3.1 mm | 4.8 mm | 1.7 mm | 1.8 mm | |
| Optic Centering Accuracy (min,sec) | 10.0 ' | 10.0 ' | 10.0 ' | 20.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | 10.0 ' | |
| Tolerance of optic size | - 0.13 mm | - 0.13 mm | - 0.02 mm | - 0.02 mm | - 0.02 mm | - 0.12 mm | - 0.12 mm | - 0.12 mm | - 0.13 mm | - 0.15 mm | - 0.09 mm | - 0.09 mm | - 0.02 mm | - 0.12 mm | - 0.12 mm | - 0.13 mm | - 0.15 mm | - 0.15 mm | - 0.15 mm | - 0.15 mm | |
| f' at X nm |
-150.99 mm -152.0 mm -154.52 mm |
-100.88 mm -101.59 mm -103.27 mm |
-5.98 mm -6.02 mm -6.12 mm |
-2.99 mm -3.01 mm -3.06 mm |
-7.97 mm -8.03 mm -8.16 mm |
-50.2 mm -50.53 mm -51.4 mm |
-29.9 mm -30.11 mm -30.61 mm |
-502.0 mm -505.5 mm -514.0 mm |
-50.2 mm -50.55 mm -51.39 mm |
-201.3 mm -202.7 mm -206.1 mm |
-9.66 mm -9.73 mm -9.89 mm |
-16.34 mm -16.45 mm -16.73 mm |
-9.96 mm -10.03 mm -10.2 mm |
-198.41 mm -199.8 mm -203.1 mm |
-98.73 mm -99.43 mm -101.1 mm |
-40.16 mm -40.44 mm -41.11 mm |
-98.73 mm -99.43 mm -101.1 mm |
-50.2 mm -50.53 mm -51.4 mm |
-1009.0 mm -1018.0 mm -1033.0 mm |
-502.0 mm -505.5 mm -514.0 mm |
|
| s' at X nm | -152.5 mm | -102.25 mm | -6.33 mm | -3.33 mm | -8.66 mm | -51.38 mm | -31.0 mm | -504.88 mm | -51.38 mm | -203.03 mm | -10.36 mm | -17.39 mm | -10.66 mm | -200.15 mm | -100.99 mm | -41.3 mm | -100.09 mm | -5138.0 mm | -1013.6 mm | -504.86 mm | |
| Part Number | G314336525 | G314317525 | G314316525 | G314001525 | G314000525 | G314002525 | G314332525 | G314331525 | G314335525 | G314315525 | G314323525 | G314304525 | G314305525 | G314003525 | G314334525 | G314333525 | G314301525 | G314322525 | G314321525 | G314325525 | G314324525 |
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