Unmounted Symmetric-Convex Lenses

Unmounted UV Fused Silica Symmetric-Convex Lenses, ARB2-NIR

Excelitas offers a broad selection of LINOS® unmounted symmetric-convex fused silica lenses, optimized for the near-infrared (NIR) wavelength range. Available in a variety of focal lengths and diameters, these lenses simplify selection for high-power optical applications. Manufactured from premium materials to strict tolerances, they feature double-sided anti-reflection coatings for maximum transmittance. Choose unmounted versions for flexible integration, or precision-mounted options in black anodized, engraved aluminum.

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Our symmetric-convex lenses, manufactured from high-quality fused silica, are supplied unmounted to facilitate flexible integration into custom optical systems. The narrow focal-length tolerances ensure consistent system integration and reliable optical performance. Designed for 1:1 imaging, these lenses feature two equal radii of curvature, delivering accurate, consistent optical performance for applications that require precise image replication.

The ARB2 NIR broadband anti-reflection coating applied to its fused silica substrate provides high transmission across the 725–1050 nm wavelength range and demonstrates excellent resistance to laser-induced damage, ensuring a high damage threshold and reliable performance in demanding conditions.

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.

BIKONVEX-SYM-Ai_4868

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, h': sagital height primary/secondary vertex, h, h' = (dm-dr) / 2 for symmetrical biconvex lenses, F, F' = focal points, H, H' = principal points; Tolerances: focal length f: ±2% image distance s': ±2%

Specifications broadband anti-reflective coating ARB2 NIR:

ARB-2-NIR reflection spectrum

  • 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 Biconvex lens; Fused silica; D=6; F=5 [ARB2-NIR] Biconvex lens; Fused silica; D=10; F=10 [ARB2-NIR] Biconvex lens; Fused silica; D=12.5; F=12.5 [ARB2-NIR] Biconvex lens; Fused silica; D=12.5; F=16 [ARB2-NIR] Biconvex lens; Fused silica; D=18; F=20 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=25 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=30 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=40 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=50 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=60 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=80 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=150 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=200 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=30 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=40 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=50 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=60 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=80 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=120 [ARB2-NIR] Biconvex lens; Fused silica; D=40; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=50; F=150 [ARB2-NIR] Biconvex lens; Fused silica; D=40; F=125 [ARB2-NIR]
Shape Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular
Focal Length (+/-) 5.0 mm 10.0 mm 12.5 mm 16.0 mm 20.0 mm 25.0 mm 30.0 mm 40.0 mm 50.0 mm 60.0 mm 80.0 mm 100.0 mm 150.0 mm 200.0 mm 30.0 mm 40.0 mm 50.0 mm 60.0 mm 80.0 mm 100.0 mm 120.0 mm 100.0 mm 150.0 mm 125.0 mm
Optic Substrate Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica 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 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 Size Ø 6.0 mm Ø 10.0 mm Ø 12.5 mm Ø 12.5 mm Ø 18.0 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 40.0 mm Ø 50.0 mm Ø 40.0 mm
Optic Center Thickness 3.0 mm 4.0 mm 4.7 mm 3.8 mm 5.8 mm 7.0 mm 6.0 mm 4.9 mm 4.2 mm 3.7 mm 3.3 mm 2.9 mm 2.4 mm 2.2 mm 11.5 mm 8.6 mm 7.3 mm 6.2 mm 5.1 mm 4.5 mm 4.1 mm 6.0 mm 6.2 mm 5.0 mm
Radius of Curvature 1 5.012 mm 9.578 mm 11.548 mm 15.735 mm 19.668 mm 24.406 mm 29.007 mm 39.525 mm 49.403 mm 60.43 mm 78.298 mm 100.0 mm 149.62 mm 199.53 mm 28.49 mm 39.243 mm 49.594 mm 60.0 mm 80.583 mm 101.092 mm 121.446 mm 100.0 mm 149.62 mm 125.89 mm
Radius of Curvature 2 -5.012 mm -9.578 mm -11.548 mm -15.735 mm -19.668 mm -24.406 mm -29.007 mm -39.525 mm -49.403 mm -60.43 mm -78.298 mm -100.0 mm -149.62 mm -199.53 mm -28.49 mm -39.243 mm -49.594 mm -60.0 mm -80.583 mm -101.092 mm -121.446 mm -100.0 mm -149.62 mm -125.89 mm
Tolerance thickness ± 0.1 mm ± 0.15 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm
Optic Edge Thickness 1.0 mm 1.2 mm 1.0 mm 1.2 mm 1.4 mm 1.6 mm 1.5 mm 1.7 mm 1.6 mm 1.6 mm 1.7 mm 1.6 mm 1.6 mm 1.6 mm 2.0 mm 2.0 mm 2.2 mm 2.0 mm 2.0 mm 2.0 mm 2.1 mm 2.0 mm 2.0 mm 1.8 mm
Optic Centering Accuracy (min,sec) 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 4.0 ' 4.0 ' 4.0 '
Tolerance of optic size - 0.075 mm - 0.09 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm
f' at X nm 5.48 mm
5.57 mm
5.72 mm
5.83 mm
6.01 mm
6.14 mm 		10.13 mm
10.3 mm
10.58 mm
10.79 mm
11.14 mm
11.39 mm 		12.2 mm
12.4 mm
12.74 mm
12.98 mm
13.41 mm
13.7 mm 		16.13 mm
16.41 mm
16.87 mm
17.2 mm
17.78 mm
18.17 mm 		20.36 mm
20.7 mm
21.28 mm
21.69 mm
22.42 mm
22.91 mm 		25.23 mm
25.66 mm
26.37 mm
26.87 mm
27.78 mm
28.4 mm 		29.56 mm
30.07 mm
30.91 mm
31.52 mm
32.59 mm
33.32 mm 		39.71 mm
40.4 mm
41.54 mm
42.36 mm
43.81 mm
44.8 mm 		49.3 mm
50.16 mm
51.58 mm
52.61 mm
54.42 mm
55.66 mm 		60.06 mm
61.11 mm
62.85 mm
64.1 mm
66.31 mm
67.82 mm 		77.57 mm
78.93 mm
81.18 mm
82.79 mm
85.66 mm
87.62 mm 		98.85 mm
100.58 mm
103.45 mm
105.51 mm
109.18 mm
111.67 mm 		147.57 mm
150.16 mm
154.46 mm
157.54 mm
163.01 mm
166.75 mm 		196.63 mm
200.09 mm
205.81 mm
209.92 mm
217.22 mm
222.2 mm 		30.06 mm
30.56 mm
31.4 mm
32.01 mm
33.07 mm
33.8 mm 		40.06 mm
40.76 mm
41.9 mm
42.73 mm
44.17 mm
45.17 mm 		50.0 mm
50.87 mm
52.32 mm
53.35 mm
55.18 mm
56.44 mm 		60.04 mm
61.09 mm
62.84 mm
64.08 mm
66.29 mm
67.81 mm 		80.08 mm
81.49 mm
83.83 mm
85.51 mm
88.46 mm
90.5 mm 		100.14 mm
101.91 mm
104.84 mm
106.94 mm
110.64 mm
113.2 mm 		120.09 mm
122.21 mm
125.73 mm
128.25 mm
132.69 mm
135.76 mm
Part Number G311202525 G311203525 G311204525 G311205525 G311206525 G311026525 G311207525 G311208525 G311209525 G311210525 G311027525 G311211525 G311212525 G311213525 G311711525 G311712525 G311713525 G311714525 G311715525 G311716525 G311718525 G311193525 G311221525 G311194525

  • Two equal radii of curvature for precision 1:1 imaging

  • Made from fused silica for high power applications, offering high damage threshold, low dispersion, and excellent 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

  • Unmounted lenses allow for flexible, custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX-Files Symmetric-Convex Fused Silica Lenses
Product Biconvex lens; Fused silica; D=6; F=5 [ARB2-NIR] Biconvex lens; Fused silica; D=10; F=10 [ARB2-NIR] Biconvex lens; Fused silica; D=12.5; F=12.5 [ARB2-NIR] Biconvex lens; Fused silica; D=12.5; F=16 [ARB2-NIR] Biconvex lens; Fused silica; D=18; F=20 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=25 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=30 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=40 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=50 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=60 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=80 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=150 [ARB2-NIR] Biconvex lens; Fused silica; D=22.4; F=200 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=30 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=40 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=50 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=60 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=80 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=31.5; F=120 [ARB2-NIR] Biconvex lens; Fused silica; D=40; F=100 [ARB2-NIR] Biconvex lens; Fused silica; D=50; F=150 [ARB2-NIR] Biconvex lens; Fused silica; D=40; F=125 [ARB2-NIR]
Shape Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular
Focal Length (+/-) 5.0 mm 10.0 mm 12.5 mm 16.0 mm 20.0 mm 25.0 mm 30.0 mm 40.0 mm 50.0 mm 60.0 mm 80.0 mm 100.0 mm 150.0 mm 200.0 mm 30.0 mm 40.0 mm 50.0 mm 60.0 mm 80.0 mm 100.0 mm 120.0 mm 100.0 mm 150.0 mm 125.0 mm
Optic Substrate Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica 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 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 Size Ø 6.0 mm Ø 10.0 mm Ø 12.5 mm Ø 12.5 mm Ø 18.0 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 22.4 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 40.0 mm Ø 50.0 mm Ø 40.0 mm
Optic Center Thickness 3.0 mm 4.0 mm 4.7 mm 3.8 mm 5.8 mm 7.0 mm 6.0 mm 4.9 mm 4.2 mm 3.7 mm 3.3 mm 2.9 mm 2.4 mm 2.2 mm 11.5 mm 8.6 mm 7.3 mm 6.2 mm 5.1 mm 4.5 mm 4.1 mm 6.0 mm 6.2 mm 5.0 mm
Radius of Curvature 1 5.012 mm 9.578 mm 11.548 mm 15.735 mm 19.668 mm 24.406 mm 29.007 mm 39.525 mm 49.403 mm 60.43 mm 78.298 mm 100.0 mm 149.62 mm 199.53 mm 28.49 mm 39.243 mm 49.594 mm 60.0 mm 80.583 mm 101.092 mm 121.446 mm 100.0 mm 149.62 mm 125.89 mm
Radius of Curvature 2 -5.012 mm -9.578 mm -11.548 mm -15.735 mm -19.668 mm -24.406 mm -29.007 mm -39.525 mm -49.403 mm -60.43 mm -78.298 mm -100.0 mm -149.62 mm -199.53 mm -28.49 mm -39.243 mm -49.594 mm -60.0 mm -80.583 mm -101.092 mm -121.446 mm -100.0 mm -149.62 mm -125.89 mm
Tolerance thickness ± 0.1 mm ± 0.15 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm
Optic Edge Thickness 1.0 mm 1.2 mm 1.0 mm 1.2 mm 1.4 mm 1.6 mm 1.5 mm 1.7 mm 1.6 mm 1.6 mm 1.7 mm 1.6 mm 1.6 mm 1.6 mm 2.0 mm 2.0 mm 2.2 mm 2.0 mm 2.0 mm 2.0 mm 2.1 mm 2.0 mm 2.0 mm 1.8 mm
Optic Centering Accuracy (min,sec) 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 4.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 3.0 ' 4.0 ' 4.0 ' 4.0 '
Tolerance of optic size - 0.075 mm - 0.09 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.13 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm
f' at X nm 5.48 mm
5.57 mm
5.72 mm
5.83 mm
6.01 mm
6.14 mm 		10.13 mm
10.3 mm
10.58 mm
10.79 mm
11.14 mm
11.39 mm 		12.2 mm
12.4 mm
12.74 mm
12.98 mm
13.41 mm
13.7 mm 		16.13 mm
16.41 mm
16.87 mm
17.2 mm
17.78 mm
18.17 mm 		20.36 mm
20.7 mm
21.28 mm
21.69 mm
22.42 mm
22.91 mm 		25.23 mm
25.66 mm
26.37 mm
26.87 mm
27.78 mm
28.4 mm 		29.56 mm
30.07 mm
30.91 mm
31.52 mm
32.59 mm
33.32 mm 		39.71 mm
40.4 mm
41.54 mm
42.36 mm
43.81 mm
44.8 mm 		49.3 mm
50.16 mm
51.58 mm
52.61 mm
54.42 mm
55.66 mm 		60.06 mm
61.11 mm
62.85 mm
64.1 mm
66.31 mm
67.82 mm 		77.57 mm
78.93 mm
81.18 mm
82.79 mm
85.66 mm
87.62 mm 		98.85 mm
100.58 mm
103.45 mm
105.51 mm
109.18 mm
111.67 mm 		147.57 mm
150.16 mm
154.46 mm
157.54 mm
163.01 mm
166.75 mm 		196.63 mm
200.09 mm
205.81 mm
209.92 mm
217.22 mm
222.2 mm 		30.06 mm
30.56 mm
31.4 mm
32.01 mm
33.07 mm
33.8 mm 		40.06 mm
40.76 mm
41.9 mm
42.73 mm
44.17 mm
45.17 mm 		50.0 mm
50.87 mm
52.32 mm
53.35 mm
55.18 mm
56.44 mm 		60.04 mm
61.09 mm
62.84 mm
64.08 mm
66.29 mm
67.81 mm 		80.08 mm
81.49 mm
83.83 mm
85.51 mm
88.46 mm
90.5 mm 		100.14 mm
101.91 mm
104.84 mm
106.94 mm
110.64 mm
113.2 mm 		120.09 mm
122.21 mm
125.73 mm
128.25 mm
132.69 mm
135.76 mm
Part Number G311202525 G311203525 G311204525 G311205525 G311206525 G311026525 G311207525 G311208525 G311209525 G311210525 G311027525 G311211525 G311212525 G311213525 G311711525 G311712525 G311713525 G311714525 G311715525 G311716525 G311718525 G311193525 G311221525 G311194525

  • Two equal radii of curvature for precision 1:1 imaging

  • Made from fused silica for high power applications, offering high damage threshold, low dispersion, and excellent 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

  • Unmounted lenses allow for flexible, custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX-Files Symmetric-Convex Fused Silica Lenses
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