Unmounted, Fused Silica Plano-Convex Lenses, ARHS-YAG
LINOS® Unmounted, Fused Silica Plano-Convex Lenses are offered in multiple focal lengths and diameters, allowing you to select the best option for UV or high-power applications. Each lens includes a double-sided narrow-band anti-reflection coating optimized for the near-infrared spectrum, providing maximum transmittance at the central YAG wavelength of 1064 nm. We use only premium materials from trusted manufacturers and maintain strict tolerances to ensure exceptional quality. All lens types are also available with a high-quality black anodized engraved aluminum mount.
Our unmounted plano-convex lenses allow flexible integration into your optical system. Tight focal-length tolerances ensure reliable performance. The high-power narrowband anti-reflection coating on fused silica maximizes transmission at 1064 nm for Nd:YAG lasers and offers excellent laser-damage resistance, ensuring consistent performance in demanding environments.
ZEMAX files are available to simplify optical design and simulation. For custom specifications or larger production volumes, contact us to request a quotation based on your technical needs.
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 YAG 1064 nm
- 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 | Plano-convex lens; Fused silica; D=8; F=12.5 [ARHS-YAG] | Plano-convex lens; Fused silica; D=10; F=15 [ARHS-YAG] | Plano-convex lens; Fused silica; D=12.5; F=20 [ARHS-YAG] | Plano-convex lens; Fused silica; D=12.5; F=25 [ARHS-YAG] | Plano-convex lens; Fused silica; D=18; F=30 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=40 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=50 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=60 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=80 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=40 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=50 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=60 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=80 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=140 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=300 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=400 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=150 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=250 [ARHS-YAG] |
| 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 (+/-) | 12.5 mm | 15.0 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 | 200.0 mm | 40.0 mm | 50.0 mm | 60.0 mm | 80.0 mm | 100.0 mm | 140.0 mm | 200.0 mm | 300.0 mm | 400.0 mm | 100.0 mm | 150.0 mm | 200.0 mm | 250.0 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 | 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 | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG |
| Optic Size | Ø 8.0 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 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 31.5 mm | Ø 31.5 mm | Ø 50.0 mm | Ø 50.0 mm | Ø 50.0 mm | Ø 50.0 mm |
| Optic Center Thickness | 2.4 mm | 2.9 mm | 3.5 mm | 3.0 mm | 4.4 mm | 5.0 mm | 4.1 mm | 3.7 mm | 3.1 mm | 2.8 mm | 2.1 mm | 9.5 mm | 7.5 mm | 6.4 mm | 5.2 mm | 4.5 mm | 3.3 mm | 3.3 mm | 3.0 mm | 2.1 mm | 8.5 mm | 6.1 mm | 5.1 mm | 4.4 mm |
| Radius of Curvature 1 | 6.355 mm | 7.499 mm | 10.0 mm | 12.589 mm | 15.51 mm | 19.668 mm | 25.119 mm | 30.287 mm | 40.388 mm | 50.481 mm | 100.0 mm | 20.316 mm | 25.483 mm | 30.509 mm | 40.681 mm | 50.841 mm | 70.287 mm | 101.82 mm | 152.896 mm | 199.53 mm | 50.481 mm | 75.531 mm | 100.0 mm | 125.89 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 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm |
| Tolerance thickness | ± 0.15 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 | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 1.0 mm | 1.0 mm | 1.3 mm | 1.3 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.6 mm | 1.5 mm | 1.5 mm | 1.5 mm | 2.0 mm | 2.1 mm | 2.0 mm | 2.0 mm | 2.0 mm | 1.5 mm | 2.1 mm | 2.2 mm | 1.5 mm | 1.8 mm | 1.8 mm | 1.9 mm | 1.9 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 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.09 mm | - 0.09 mm | - 0.11 mm | - 0.11 mm | - 0.11 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 | - 0.07 mm | - 0.07 mm | - 0.16 mm | - 0.16 mm | - 0.16 mm | - 0.16 mm |
| Weight (kg) | 6.0E-4 | 0.002 | 0.002 | |||||||||||||||||||||
| f' at X nm |
12.5 mm 12.72 mm 13.09 mm 13.35 mm 13.81 mm 14.13 mm |
14.75 mm 15.01 mm 15.44 mm 15.75 mm 16.3 mm 16.67 mm |
19.67 mm 20.02 mm 20.59 mm 21.01 mm 21.74 mm 22.23 mm |
24.77 mm 25.2 mm 25.92 mm 26.44 mm 27.36 mm 27.99 mm |
30.51 mm 31.05 mm 31.94 mm 32.56 mm 33.71 mm 34.49 mm |
38.69 mm 39.37 mm 40.5 mm 41.31 mm 42.75 mm 43.73 mm |
49.42 mm 50.29 mm 51.73 mm 52.76 mm 54.6 mm 55.85 mm |
59.58 mm 60.63 mm 62.37 mm 63.62 mm 65.83 mm 67.34 mm |
79.45 mm 80.85 mm 83.17 mm 84.83 mm 87.79 mm 89.8 mm |
99.31 mm 101.06 mm 103.95 mm 106.03 mm 109.77 mm 112.25 mm |
196.73 mm 200.19 mm 205.92 mm 210.04 mm 217.35 mm 222.37 mm |
39.95 mm 40.66 mm 41.83 mm 42.67 mm 44.16 mm 45.18 mm |
50.11 mm 51.0 mm 52.47 mm 53.53 mm 55.39 mm 56.68 mm |
60.0 mm 61.06 mm 62.82 mm 64.09 mm 66.31 mm 67.85 mm |
80.0 mm 81.41 mm 83.77 mm 85.45 mm 88.42 mm 90.48 mm |
99.97 mm 101.75 mm 104.69 mm 106.79 mm 110.51 mm 113.07 mm |
138.21 mm 140.7 mm 144.73 mm 147.63 mm 152.77 mm 156.3 mm |
200.22 mm 203.77 mm 209.66 mm 213.88 mm 221.31 mm 226.45 mm |
300.65 mm 305.99 mm 314.83 mm 321.16 mm 332.33 mm 340.05 mm |
392.35 mm 399.31 mm 410.86 mm 419.12 mm 433.69 mm 443.77 mm |
99.31 mm 101.06 mm 103.95 mm 106.03 mm 109.77 mm 112.25 mm |
148.59 mm 151.2 mm 155.54 mm 158.65 mm 164.17 mm 167.95 mm |
196.73 mm 200.19 mm 205.92 mm 210.04 mm 217.35 mm 222.37 mm |
247.66 mm 252.02 mm 259.24 mm 264.42 mm 273.63 mm 279.95 mm |
| s' at X nm | 10.91 mm | 12.83 mm | 17.35 mm | 22.78 mm | 27.59 mm | 35.38 mm | 46.7 mm | 57.13 mm | 77.4 mm | 97.45 mm | 195.33 mm | 33.65 mm | 45.14 mm | 55.75 mm | 76.55 mm | 96.99 mm | 136.09 mm | 198.03 mm | 298.66 mm | 390.96 mm | 93.67 mm | 144.54 mm | 193.34 mm | 244.74 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 narrowband AR coating: ARHS, optimized for maximum transmission at the 1064 nm center wavelength
Unmounted lenses allow for flexible, custom integration into your optical system
ZEMAX files available, enabling easy system design and simulation
| Product | Plano-convex lens; Fused silica; D=8; F=12.5 [ARHS-YAG] | Plano-convex lens; Fused silica; D=10; F=15 [ARHS-YAG] | Plano-convex lens; Fused silica; D=12.5; F=20 [ARHS-YAG] | Plano-convex lens; Fused silica; D=12.5; F=25 [ARHS-YAG] | Plano-convex lens; Fused silica; D=18; F=30 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=40 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=50 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=60 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=80 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=22.4; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=40 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=50 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=60 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=80 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=140 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=300 [ARHS-YAG] | Plano-convex lens; Fused silica; D=31.5; F=400 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=100 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=150 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=200 [ARHS-YAG] | Plano-convex lens; Fused silica; D=50; F=250 [ARHS-YAG] |
| 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 (+/-) | 12.5 mm | 15.0 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 | 200.0 mm | 40.0 mm | 50.0 mm | 60.0 mm | 80.0 mm | 100.0 mm | 140.0 mm | 200.0 mm | 300.0 mm | 400.0 mm | 100.0 mm | 150.0 mm | 200.0 mm | 250.0 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 | 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 | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG | ARHS YAG |
| Optic Size | Ø 8.0 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 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 31.5 mm | Ø 31.5 mm | Ø 50.0 mm | Ø 50.0 mm | Ø 50.0 mm | Ø 50.0 mm |
| Optic Center Thickness | 2.4 mm | 2.9 mm | 3.5 mm | 3.0 mm | 4.4 mm | 5.0 mm | 4.1 mm | 3.7 mm | 3.1 mm | 2.8 mm | 2.1 mm | 9.5 mm | 7.5 mm | 6.4 mm | 5.2 mm | 4.5 mm | 3.3 mm | 3.3 mm | 3.0 mm | 2.1 mm | 8.5 mm | 6.1 mm | 5.1 mm | 4.4 mm |
| Radius of Curvature 1 | 6.355 mm | 7.499 mm | 10.0 mm | 12.589 mm | 15.51 mm | 19.668 mm | 25.119 mm | 30.287 mm | 40.388 mm | 50.481 mm | 100.0 mm | 20.316 mm | 25.483 mm | 30.509 mm | 40.681 mm | 50.841 mm | 70.287 mm | 101.82 mm | 152.896 mm | 199.53 mm | 50.481 mm | 75.531 mm | 100.0 mm | 125.89 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 | -999.0 mm | -999.0 mm | -999.0 mm | -999.0 mm |
| Tolerance thickness | ± 0.15 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 | ± 0.2 mm | ± 0.2 mm | ± 0.2 mm |
| Optic Edge Thickness | 1.0 mm | 1.0 mm | 1.3 mm | 1.3 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.6 mm | 1.5 mm | 1.5 mm | 1.5 mm | 2.0 mm | 2.1 mm | 2.0 mm | 2.0 mm | 2.0 mm | 1.5 mm | 2.1 mm | 2.2 mm | 1.5 mm | 1.8 mm | 1.8 mm | 1.9 mm | 1.9 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 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 3.0 ' | 4.0 ' | 4.0 ' | 4.0 ' | 4.0 ' |
| Tolerance of optic size | - 0.09 mm | - 0.09 mm | - 0.11 mm | - 0.11 mm | - 0.11 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 | - 0.07 mm | - 0.07 mm | - 0.16 mm | - 0.16 mm | - 0.16 mm | - 0.16 mm |
| Weight (kg) | 6.0E-4 | 0.002 | 0.002 | |||||||||||||||||||||
| f' at X nm |
12.5 mm 12.72 mm 13.09 mm 13.35 mm 13.81 mm 14.13 mm |
14.75 mm 15.01 mm 15.44 mm 15.75 mm 16.3 mm 16.67 mm |
19.67 mm 20.02 mm 20.59 mm 21.01 mm 21.74 mm 22.23 mm |
24.77 mm 25.2 mm 25.92 mm 26.44 mm 27.36 mm 27.99 mm |
30.51 mm 31.05 mm 31.94 mm 32.56 mm 33.71 mm 34.49 mm |
38.69 mm 39.37 mm 40.5 mm 41.31 mm 42.75 mm 43.73 mm |
49.42 mm 50.29 mm 51.73 mm 52.76 mm 54.6 mm 55.85 mm |
59.58 mm 60.63 mm 62.37 mm 63.62 mm 65.83 mm 67.34 mm |
79.45 mm 80.85 mm 83.17 mm 84.83 mm 87.79 mm 89.8 mm |
99.31 mm 101.06 mm 103.95 mm 106.03 mm 109.77 mm 112.25 mm |
196.73 mm 200.19 mm 205.92 mm 210.04 mm 217.35 mm 222.37 mm |
39.95 mm 40.66 mm 41.83 mm 42.67 mm 44.16 mm 45.18 mm |
50.11 mm 51.0 mm 52.47 mm 53.53 mm 55.39 mm 56.68 mm |
60.0 mm 61.06 mm 62.82 mm 64.09 mm 66.31 mm 67.85 mm |
80.0 mm 81.41 mm 83.77 mm 85.45 mm 88.42 mm 90.48 mm |
99.97 mm 101.75 mm 104.69 mm 106.79 mm 110.51 mm 113.07 mm |
138.21 mm 140.7 mm 144.73 mm 147.63 mm 152.77 mm 156.3 mm |
200.22 mm 203.77 mm 209.66 mm 213.88 mm 221.31 mm 226.45 mm |
300.65 mm 305.99 mm 314.83 mm 321.16 mm 332.33 mm 340.05 mm |
392.35 mm 399.31 mm 410.86 mm 419.12 mm 433.69 mm 443.77 mm |
99.31 mm 101.06 mm 103.95 mm 106.03 mm 109.77 mm 112.25 mm |
148.59 mm 151.2 mm 155.54 mm 158.65 mm 164.17 mm 167.95 mm |
196.73 mm 200.19 mm 205.92 mm 210.04 mm 217.35 mm 222.37 mm |
247.66 mm 252.02 mm 259.24 mm 264.42 mm 273.63 mm 279.95 mm |
| s' at X nm | 10.91 mm | 12.83 mm | 17.35 mm | 22.78 mm | 27.59 mm | 35.38 mm | 46.7 mm | 57.13 mm | 77.4 mm | 97.45 mm | 195.33 mm | 33.65 mm | 45.14 mm | 55.75 mm | 76.55 mm | 96.99 mm | 136.09 mm | 198.03 mm | 298.66 mm | 390.96 mm | 93.67 mm | 144.54 mm | 193.34 mm | 244.74 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 narrowband AR coating: ARHS, optimized for maximum transmission at the 1064 nm center wavelength
Unmounted lenses allow for flexible, custom integration into your optical system
ZEMAX files available, enabling easy system design and simulation