Unmounted Symmetric-Convex Lenses

Unmounted Symmetric-Convex Lenses, Uncoated

Excelitas provides a wide range of unmounted LINOS® Singlets in various focal lengths and diameters, allowing you to select components suited to your application. Each lens is manufactured from premium materials sourced from trusted partners and produced to strict tolerances for exceptional quality. For convenience and durability, all lens types are also available with a high-quality, black-anodized, engraved aluminum mount.

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Our symmetric-convex lenses are made from high-quality N-BK7 glass and supplied unmounted for flexible integration into custom optical systems. Their narrow focal-length tolerances ensure consistent system integration and reliable optical performance.

These lenses are engineered for 1:1 imaging and have two equal radii of curvature to deliver precise, consistent optical performance in applications that demand exact image replication. The uncoated singlets perform reliably across a wide wavelength range.

ZEMAX files support fast and accurate 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 = primary vertex (h=dm-dr-h'), F, F' = focal points, H, H' = principal points; Tolerances: focal length f: ±2% image distance s': ±2%

Product Biconvex lens; N-BaK 4; D=6; F=5 Biconvex lens; N-BaK 4; D=8; F=7 Biconvex lens; N-BaK 4; D=10; F=10 Biconvex lens; N-BK 7; D=12.5; F=12.5 Biconvex lens; N-BK 7; D=12.7; F=15 Biconvex lens; N-BK 7; D=12.7; F=20 Biconvex lens; N-BK 7; D=12.7; F=30 Biconvex lens; N-BK 7; D=12.7; F=50 Biconvex lens; N-BK 7; D=12.7; F=150 Biconvex lens; N-BK 7; D=18; F=16 Biconvex lens; N-BK 7; D=22.4; F=20 Biconvex lens; N-BK 7; D=22.4; F=25 Biconvex lens; N-BK 7; D=22.4; F=30 Biconvex lens; N-BK 7; D=22.4; F=40 Biconvex lens; N-BK 7; D=22.4; F=50 Biconvex lens; N-BK 7; D=22.4; F=60 Biconvex lens; N-BK 7; D=22.4; F=80 Biconvex lens; N-BK 7; D=22.4; F=100 Biconvex lens; N-BK 7; D=22.4; F=150 Biconvex lens; N-BK 7; D=22.4; F=200 Biconvex lens; N-BK 7; D=25.4; F=30 Biconvex lens; N-BK 7; D=25.4; F=50 Biconvex lens; N-BK 7; D=25.4; F=80 Biconvex lens; N-BK 7; D=25.4; F=100 Biconvex lens; N-BK 7; D=25.4; F=150 Biconvex lens; N-SK 2; D=31.5; F=30 Biconvex lens; N-BK 7; D=31.5; F=40 Biconvex lens; N-BK 7; D=31.5; F=50 Biconvex lens; N-BK 7; D=31.5; F=70 Biconvex lens; N-BK 7; D=31.5; F=130
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 Circular Circular Circular Circular Circular Circular
Focal Length (+/-) 5.0 mm 7.0 mm 10.0 mm 12.5 mm 15.0 mm 20.0 mm 30.0 mm 50.0 mm 150.0 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 50.0 mm 80.0 mm 100.0 mm 150.0 mm 30.0 mm 40.0 mm 50.0 mm 70.0 mm 130.0 mm
Optic Substrate N-BAK4 N-BAK4 N-BAK4 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 N-BK7 N-BK7 N-SK2 N-BK7 N-BK7 N-BK7 N-BK7
Optic Size Ø 6.0 mm Ø 8.0 mm Ø 10.0 mm Ø 12.5 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 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 22.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm
Optic Center Thickness 2.9 mm 3.4 mm 3.5 mm 4.5 mm 4.0 mm 3.0 mm 3.0 mm 3.0 mm 3.0 mm 7.0 mm 8.8 mm 7.0 mm 6.3 mm 5.0 mm 4.5 mm 4.0 mm 3.5 mm 3.5 mm 3.0 mm 3.0 mm 7.0 mm 7.0 mm 7.0 mm 7.0 mm 7.0 mm 9.5 mm 8.3 mm 7.0 mm 5.5 mm 4.0 mm
Radius of Curvature 1 5.085 mm 7.499 mm 10.669 mm 11.971 mm 14.749 mm 20.097 mm 30.287 mm 51.08 mm 153.99 mm 15.179 mm 19.248 mm 24.406 mm 30.069 mm 41.867 mm 52.33 mm 62.643 mm 83.536 mm 104.41 mm 156.22 mm 209.83 mm 30.069 mm 51.08 mm 81.166 mm 102.92 mm 153.99 mm 34.721 mm 41.867 mm 52.33 mm 72.862 mm 134.325 mm
Radius of Curvature 2 -5.085 mm -7.499 mm -10.669 mm -11.971 mm -14.749 mm -20.097 mm -30.287 mm -51.08 mm -153.99 mm -15.179 mm -19.248 mm -24.406 mm -30.069 mm -41.867 mm -52.33 mm -62.643 mm -83.536 mm -104.41 mm -156.22 mm -209.83 mm -30.069 mm -51.08 mm -81.166 mm -102.92 mm -153.99 mm -34.721 mm -41.867 mm -52.33 mm -72.862 mm -134.325 mm
Tolerance thickness ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 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 ± 0.2 mm ± 0.2 mm
Optic Edge Thickness 0.9 mm 1.1 mm 1.0 mm 1.0 mm 1.1 mm 0.9 mm 1.6 mm 2.2 mm 2.7 mm 1.1 mm 1.6 mm 1.6 mm 2.0 mm 2.0 mm 2.1 mm 2.0 mm 2.0 mm 2.3 mm 2.2 mm 2.4 mm 1.4 mm 3.8 mm 5.0 mm 5.4 mm 6.0 mm 2.0 mm 2.1 mm 2.1 mm 2.1 mm 2.2 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 ' 10.0 ' 10.0 ' 10.0 ' 10.0 ' 10.0 ' 10.0 '
Tolerance of optic size - 0.075 mm - 0.09 mm - 0.09 mm - 0.11 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.11 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 - 0.06 mm - 0.06 mm - 0.06 mm - 0.06 mm - 0.06 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm
f' at X nm 4.97 mm
5.0 mm
5.08 mm 		7.14 mm
7.21 mm
7.33 mm 		9.93 mm
10.01 mm
10.17 mm 		12.33 mm
12.41 mm
12.61 mm 		14.91 mm
15.01 mm
15.25 mm 		19.88 mm
20.02 mm
20.34 mm 		29.7 mm
29.9 mm
30.4 mm 		49.74 mm
50.08 mm
50.91 mm 		148.9 mm
150.0 mm
152.5 mm 		15.88 mm
15.99 mm
16.24 mm 		20.13 mm
20.26 mm
20.58 mm 		24.74 mm
24.9 mm
25.3 mm 		30.06 mm
30.27 mm
30.75 mm 		41.2 mm
41.48 mm
42.16 mm 		51.19 mm
51.55 mm
52.4 mm 		61.05 mm
61.47 mm
62.49 mm 		81.1 mm
81.67 mm
83.02 mm 		101.22 mm
101.93 mm
103.61 mm 		151.08 mm
152.14 mm
154.66 mm 		202.75 mm
204.18 mm
207.56 mm 		30.18 mm
30.39 mm
30.88 mm 		50.42 mm
50.77 mm
51.6 mm 		79.41 mm
79.96 mm
81.28 mm 		100.4 mm
101.1 mm
102.8 mm 		149.6 mm
150.7 mm
153.1 mm 		30.02 mm
30.25 mm
30.75 mm 		41.77 mm
42.06 mm
42.74 mm 		51.62 mm
51.98 mm
52.83 mm 		71.15 mm
71.65 mm
72.82 mm 		130.14 mm
131.06 mm
133.23 mm
Part Number G311328000 G311329000 G311300000 G311377000 G311381000 G311382000 G311383000 G311384000 G311387000 G311378000 G311338000 G311308000 G311310000 G311314000 G311315000 G311316000 G311317000 G311318000 G311319000 G311320000 G311321000 G311322000 G311323000 G311324000 G311325000 G311331000 G311339000 G311351000 G311357000 G311335000

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

  • Tight manufacturing tolerances for excellent performance and precision mounting

  • Uncoated singlets suitable for broad wavelength range

  • Supplied unmounted to allow for flexible, custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX-Files Symmetric-Convex Lenses
Product Biconvex lens; N-BaK 4; D=6; F=5 Biconvex lens; N-BaK 4; D=8; F=7 Biconvex lens; N-BaK 4; D=10; F=10 Biconvex lens; N-BK 7; D=12.5; F=12.5 Biconvex lens; N-BK 7; D=12.7; F=15 Biconvex lens; N-BK 7; D=12.7; F=20 Biconvex lens; N-BK 7; D=12.7; F=30 Biconvex lens; N-BK 7; D=12.7; F=50 Biconvex lens; N-BK 7; D=12.7; F=150 Biconvex lens; N-BK 7; D=18; F=16 Biconvex lens; N-BK 7; D=22.4; F=20 Biconvex lens; N-BK 7; D=22.4; F=25 Biconvex lens; N-BK 7; D=22.4; F=30 Biconvex lens; N-BK 7; D=22.4; F=40 Biconvex lens; N-BK 7; D=22.4; F=50 Biconvex lens; N-BK 7; D=22.4; F=60 Biconvex lens; N-BK 7; D=22.4; F=80 Biconvex lens; N-BK 7; D=22.4; F=100 Biconvex lens; N-BK 7; D=22.4; F=150 Biconvex lens; N-BK 7; D=22.4; F=200 Biconvex lens; N-BK 7; D=25.4; F=30 Biconvex lens; N-BK 7; D=25.4; F=50 Biconvex lens; N-BK 7; D=25.4; F=80 Biconvex lens; N-BK 7; D=25.4; F=100 Biconvex lens; N-BK 7; D=25.4; F=150 Biconvex lens; N-SK 2; D=31.5; F=30 Biconvex lens; N-BK 7; D=31.5; F=40 Biconvex lens; N-BK 7; D=31.5; F=50 Biconvex lens; N-BK 7; D=31.5; F=70 Biconvex lens; N-BK 7; D=31.5; F=130
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 Circular Circular Circular Circular Circular Circular
Focal Length (+/-) 5.0 mm 7.0 mm 10.0 mm 12.5 mm 15.0 mm 20.0 mm 30.0 mm 50.0 mm 150.0 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 50.0 mm 80.0 mm 100.0 mm 150.0 mm 30.0 mm 40.0 mm 50.0 mm 70.0 mm 130.0 mm
Optic Substrate N-BAK4 N-BAK4 N-BAK4 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 N-BK7 N-BK7 N-SK2 N-BK7 N-BK7 N-BK7 N-BK7
Optic Size Ø 6.0 mm Ø 8.0 mm Ø 10.0 mm Ø 12.5 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 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 22.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm Ø 31.5 mm
Optic Center Thickness 2.9 mm 3.4 mm 3.5 mm 4.5 mm 4.0 mm 3.0 mm 3.0 mm 3.0 mm 3.0 mm 7.0 mm 8.8 mm 7.0 mm 6.3 mm 5.0 mm 4.5 mm 4.0 mm 3.5 mm 3.5 mm 3.0 mm 3.0 mm 7.0 mm 7.0 mm 7.0 mm 7.0 mm 7.0 mm 9.5 mm 8.3 mm 7.0 mm 5.5 mm 4.0 mm
Radius of Curvature 1 5.085 mm 7.499 mm 10.669 mm 11.971 mm 14.749 mm 20.097 mm 30.287 mm 51.08 mm 153.99 mm 15.179 mm 19.248 mm 24.406 mm 30.069 mm 41.867 mm 52.33 mm 62.643 mm 83.536 mm 104.41 mm 156.22 mm 209.83 mm 30.069 mm 51.08 mm 81.166 mm 102.92 mm 153.99 mm 34.721 mm 41.867 mm 52.33 mm 72.862 mm 134.325 mm
Radius of Curvature 2 -5.085 mm -7.499 mm -10.669 mm -11.971 mm -14.749 mm -20.097 mm -30.287 mm -51.08 mm -153.99 mm -15.179 mm -19.248 mm -24.406 mm -30.069 mm -41.867 mm -52.33 mm -62.643 mm -83.536 mm -104.41 mm -156.22 mm -209.83 mm -30.069 mm -51.08 mm -81.166 mm -102.92 mm -153.99 mm -34.721 mm -41.867 mm -52.33 mm -72.862 mm -134.325 mm
Tolerance thickness ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 mm ± 0.1 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 ± 0.2 mm ± 0.2 mm
Optic Edge Thickness 0.9 mm 1.1 mm 1.0 mm 1.0 mm 1.1 mm 0.9 mm 1.6 mm 2.2 mm 2.7 mm 1.1 mm 1.6 mm 1.6 mm 2.0 mm 2.0 mm 2.1 mm 2.0 mm 2.0 mm 2.3 mm 2.2 mm 2.4 mm 1.4 mm 3.8 mm 5.0 mm 5.4 mm 6.0 mm 2.0 mm 2.1 mm 2.1 mm 2.1 mm 2.2 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 ' 10.0 ' 10.0 ' 10.0 ' 10.0 ' 10.0 ' 10.0 '
Tolerance of optic size - 0.075 mm - 0.09 mm - 0.09 mm - 0.11 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.11 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 - 0.06 mm - 0.06 mm - 0.06 mm - 0.06 mm - 0.06 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm - 0.07 mm
f' at X nm 4.97 mm
5.0 mm
5.08 mm 		7.14 mm
7.21 mm
7.33 mm 		9.93 mm
10.01 mm
10.17 mm 		12.33 mm
12.41 mm
12.61 mm 		14.91 mm
15.01 mm
15.25 mm 		19.88 mm
20.02 mm
20.34 mm 		29.7 mm
29.9 mm
30.4 mm 		49.74 mm
50.08 mm
50.91 mm 		148.9 mm
150.0 mm
152.5 mm 		15.88 mm
15.99 mm
16.24 mm 		20.13 mm
20.26 mm
20.58 mm 		24.74 mm
24.9 mm
25.3 mm 		30.06 mm
30.27 mm
30.75 mm 		41.2 mm
41.48 mm
42.16 mm 		51.19 mm
51.55 mm
52.4 mm 		61.05 mm
61.47 mm
62.49 mm 		81.1 mm
81.67 mm
83.02 mm 		101.22 mm
101.93 mm
103.61 mm 		151.08 mm
152.14 mm
154.66 mm 		202.75 mm
204.18 mm
207.56 mm 		30.18 mm
30.39 mm
30.88 mm 		50.42 mm
50.77 mm
51.6 mm 		79.41 mm
79.96 mm
81.28 mm 		100.4 mm
101.1 mm
102.8 mm 		149.6 mm
150.7 mm
153.1 mm 		30.02 mm
30.25 mm
30.75 mm 		41.77 mm
42.06 mm
42.74 mm 		51.62 mm
51.98 mm
52.83 mm 		71.15 mm
71.65 mm
72.82 mm 		130.14 mm
131.06 mm
133.23 mm
Part Number G311328000 G311329000 G311300000 G311377000 G311381000 G311382000 G311383000 G311384000 G311387000 G311378000 G311338000 G311308000 G311310000 G311314000 G311315000 G311316000 G311317000 G311318000 G311319000 G311320000 G311321000 G311322000 G311323000 G311324000 G311325000 G311331000 G311339000 G311351000 G311357000 G311335000

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

  • Tight manufacturing tolerances for excellent performance and precision mounting

  • Uncoated singlets suitable for broad wavelength range

  • Supplied unmounted to allow for flexible, custom integration into your optical system

  • ZEMAX files available, enabling easy system design and simulation

ZEMAX-Files Symmetric-Convex Lenses
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