Unmounted N-BK7 Symmetric-Concave Lenses

Unmounted N-BK7 Symmetric-Concave Lenses, ARHS-YAG

Excelitas offers LINOS® unmounted symmetric-concave lenses made from high-quality N-BK7 glass with a V-coating for 1064 nm. These lenses are available in various focal lengths and diameters, providing reliable solutions for diverse optical applications. Symmetric-concave lenses are ideal for beam expansion, controlled divergence of collimated light, and system setups requiring low spherical aberration and well-balanced performance. All lenses are produced to tight tolerances for consistent optical quality. Each unmounted lens type is also available with a black-anodized, engraved aluminum mount.

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Our symmetric-concave lenses are made from high-quality N-BK7 glass and supplied unmounted for flexible integration into your optical system. Tight focal-length tolerances ensure consistent integration and reliable optical system performance. Each lens feature two equal radii of curvature, delivering precise results for applications that require controlled beam divergence.

The high-power narrowband anti-reflection coating maximizes transmission at the Nd: YAG wavelength of 1064 nm and offers excellent laser damage resistance, ensuring a high damage threshold and reliable performance in demanding environments.

ZEMAX files are provided to streamline optical design and simulation. For customized specifications or higher-volume production, contact us for a quotation tailored to your technical requirements.

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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' = sagittal height secondary vertex, F, F' = focal points, H, H' = principal points; Tolerances: focal length f: ±2% image distance s': ±2%

Specifications high-power narrowband anti-reflective coating ARHS YAG 1064 nm:

ARHS 1064 nm Reflection Spectrum

  • Guaranteed residual reflection at central wavelength λ₀: < 0.2 % for angles of incidence 0° ≤ AOI ≤ 15° or < 0.5 % for AOI = 45° (unpolarized)
  • Damage threshold H∞ > 50 J/cm² for 11 ns laser pulses (s‑on‑1) at 1064 nm and 10 Hz
  • Design adaptable to the spectral range of 300 nm ≤ λ ≤ 2200 nm and to higher angles of incidence

Product Biconcave lens; N-BK 7; D=22.4; F=-20 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-100 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-50 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-20 [ARHS-YAG] Biconcave lens; N-BK 7; D=10; F=-10 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-100 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-50 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-40 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-30 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-150 [ARHS-YAG] Biconcave lens; N-BK 7; D=40; F=-500 [ARHS-YAG] Biconcave lens; N-BK 7; D=25.4; F=-200 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-200 [ARHS-YAG] Biconcave lens; N-BK 7; D=25.4; F=-50 [ARHS-YAG]
Optic Size Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 12.7 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 40.0 mm Ø 25.4 mm Ø 12.7 mm Ø 25.4 mm
Focal Length (+/-) -20.0 mm -100.0 mm -50.0 mm -20.0 mm -10.0 mm -100.0 mm -50.0 mm -40.0 mm -30.0 mm -150.0 mm -500.0 mm -200.0 mm -200.0 mm -50.0 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
Coating ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG
Optic Center Thickness 1.5 mm 1.5 mm 1.5 mm 1.5 mm 1.0 mm 1.5 mm 1.5 mm 1.5 mm 1.5 mm 1.5 mm 2.0 mm 1.5 mm 1.5 mm 1.5 mm
Radius of Curvature 1 -20.833 mm -104.41 mm -52.33 mm -20.983 mm -10.669 mm -104.41 mm -52.33 mm -41.867 mm -31.396 mm -156.22 mm -523.3 mm -209.83 mm -209.83 mm -52.33 mm
Radius of Curvature 2 20.833 mm 104.41 mm 52.33 mm 20.983 mm 10.669 mm 104.41 mm 52.33 mm 41.867 mm 31.396 mm 156.22 mm 523.3 mm 209.83 mm 209.83 mm 52.33 mm
Tolerance thickness ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.1 mm ± 0.15 mm ± 0.1 mm ± 0.1 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.1 mm ± 0.2 mm
Optic Edge Thickness 7.2 mm 2.7 mm 3.9 mm 3.5 mm 3.5 mm 1.9 mm 2.3 mm 4.5 mm 5.6 mm 2.3 mm 2.8 mm 2.3 mm 1.7 mm 4.6 mm
Optic Centering Accuracy (min,sec) 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 - 0.13 mm - 0.12 mm - 0.09 mm - 0.12 mm - 0.12 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.16 mm - 0.15 mm - 0.12 mm - 0.15 mm
Height 3.27 mm 0.6 mm 1.21 mm 0.98 mm 1.24 mm 0.19 mm 0.39 mm 1.53 mm 2.07 mm 0.4 mm 0.38 mm 0.39 mm 0.1 mm 1.56 mm
f' at X nm -19.84 mm
-19.98 mm
-20.31 mm 		-100.4 mm
-101.1 mm
-102.78 mm 		-50.2 mm
-50.55 mm
-51.39 mm 		-19.98 mm
-20.12 mm
-20.46 mm 		-10.12 mm
-10.19 mm
-10.36 mm 		-100.4 mm
-101.1 mm
-102.8 mm 		-50.2 mm
-50.55 mm
-51.4 mm 		-40.11 mm
-40.39 mm
-41.07 mm 		-30.02 mm
-30.23 mm
-30.73 mm 		-150.34 mm
-151.4 mm
-153.91 mm 		-504.08 mm
-507.64 mm
-516.06 mm 		-202.0 mm
-203.4 mm
-206.8 mm 		-202.0 mm
-203.4 mm
-206.8 mm 		-50.2 mm
-50.88 mm
-51.4 mm
Coating Specification Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable
Part Number G313205329 G313216329 G313215329 G313373329 G313210329 G313375329 G313374329 G313214329 G313206329 G313217329 G313249329 G313339329 G313376329 G313337329

  • Tight manufacturing tolerances for excellent performance and precision mounting

  • Standard narrowband AR coating: ARHS, optimized for maximum transmission at the 1064 nm center wavelength

  • Unmounted lenses offer flexibility for custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX Files for Symmetric-Concave Lenses
Product Biconcave lens; N-BK 7; D=22.4; F=-20 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-100 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-50 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-20 [ARHS-YAG] Biconcave lens; N-BK 7; D=10; F=-10 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-100 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-50 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-40 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-30 [ARHS-YAG] Biconcave lens; N-BK 7; D=22.4; F=-150 [ARHS-YAG] Biconcave lens; N-BK 7; D=40; F=-500 [ARHS-YAG] Biconcave lens; N-BK 7; D=25.4; F=-200 [ARHS-YAG] Biconcave lens; N-BK 7; D=12.7; F=-200 [ARHS-YAG] Biconcave lens; N-BK 7; D=25.4; F=-50 [ARHS-YAG]
Optic Size Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 12.7 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 40.0 mm Ø 25.4 mm Ø 12.7 mm Ø 25.4 mm
Focal Length (+/-) -20.0 mm -100.0 mm -50.0 mm -20.0 mm -10.0 mm -100.0 mm -50.0 mm -40.0 mm -30.0 mm -150.0 mm -500.0 mm -200.0 mm -200.0 mm -50.0 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
Coating ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG ARHS YAG
Optic Center Thickness 1.5 mm 1.5 mm 1.5 mm 1.5 mm 1.0 mm 1.5 mm 1.5 mm 1.5 mm 1.5 mm 1.5 mm 2.0 mm 1.5 mm 1.5 mm 1.5 mm
Radius of Curvature 1 -20.833 mm -104.41 mm -52.33 mm -20.983 mm -10.669 mm -104.41 mm -52.33 mm -41.867 mm -31.396 mm -156.22 mm -523.3 mm -209.83 mm -209.83 mm -52.33 mm
Radius of Curvature 2 20.833 mm 104.41 mm 52.33 mm 20.983 mm 10.669 mm 104.41 mm 52.33 mm 41.867 mm 31.396 mm 156.22 mm 523.3 mm 209.83 mm 209.83 mm 52.33 mm
Tolerance thickness ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.1 mm ± 0.15 mm ± 0.1 mm ± 0.1 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.1 mm ± 0.2 mm
Optic Edge Thickness 7.2 mm 2.7 mm 3.9 mm 3.5 mm 3.5 mm 1.9 mm 2.3 mm 4.5 mm 5.6 mm 2.3 mm 2.8 mm 2.3 mm 1.7 mm 4.6 mm
Optic Centering Accuracy (min,sec) 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 - 0.13 mm - 0.12 mm - 0.09 mm - 0.12 mm - 0.12 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.16 mm - 0.15 mm - 0.12 mm - 0.15 mm
Height 3.27 mm 0.6 mm 1.21 mm 0.98 mm 1.24 mm 0.19 mm 0.39 mm 1.53 mm 2.07 mm 0.4 mm 0.38 mm 0.39 mm 0.1 mm 1.56 mm
f' at X nm -19.84 mm
-19.98 mm
-20.31 mm 		-100.4 mm
-101.1 mm
-102.78 mm 		-50.2 mm
-50.55 mm
-51.39 mm 		-19.98 mm
-20.12 mm
-20.46 mm 		-10.12 mm
-10.19 mm
-10.36 mm 		-100.4 mm
-101.1 mm
-102.8 mm 		-50.2 mm
-50.55 mm
-51.4 mm 		-40.11 mm
-40.39 mm
-41.07 mm 		-30.02 mm
-30.23 mm
-30.73 mm 		-150.34 mm
-151.4 mm
-153.91 mm 		-504.08 mm
-507.64 mm
-516.06 mm 		-202.0 mm
-203.4 mm
-206.8 mm 		-202.0 mm
-203.4 mm
-206.8 mm 		-50.2 mm
-50.88 mm
-51.4 mm
Coating Specification Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable Selectable
Part Number G313205329 G313216329 G313215329 G313373329 G313210329 G313375329 G313374329 G313214329 G313206329 G313217329 G313249329 G313339329 G313376329 G313337329

  • Tight manufacturing tolerances for excellent performance and precision mounting

  • Standard narrowband AR coating: ARHS, optimized for maximum transmission at the 1064 nm center wavelength

  • Unmounted lenses offer flexibility for custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX Files for Symmetric-Concave Lenses
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