Molded Aspheric Lenses

LightPath’s glass molding technology has enabled high volume production of aspheric optics while maintaining the highest quality at an affordable price. Because molding is the most consistent and economical way to produce aspheres in large volumes, LightPath has perfected this method to offer the most precise aspheric lens available. LightPath offers standard and custom-made lenses, all designed by our expert optical design engineers.

  • Benefit from the quality and performance of all-glass aspheres
  • Easily transition from prototype phase to high-volume production
  • Customize to fit your application or choose from over 100 standard aspheric designs
  • RoHS-compliant, ultra-high quality glass
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Molding Process

1: Raw materials in ampoule

2: Ampoule added to the furnace to create boule for slicing and coring

3: Pre-preform processing

4: Grind and polish glass spheres

5: Preform inspection

6: Load into mold

7: Program lens press station

8: Vacuum remove lens

9: Talysurf inspection

10: Load for coating

Geltech Asphere Performance Parameters

Lens CodeFocal Length (mm)Numerical ApertureOuter Diameter (mm)Working Distance (mm)Drawing
3551040.30.651.60.150 /
.975		Download
3556310.390.55 / 0.131.20 x 1.200.284 / 1.902Download
3550700.430.06 / 0.661.20 x 1.205.00 / 0.270Download
3554850.550.50 / 0.101.000.30 / 3.030Download
3554870.550.50 / 0.111.000.276 / 2.940Download
3554650.550.50 / 0.101.0 x 1.00.250 / 2.874Download
3555360.600.601.240.22Download
3558800.700.602.500.33Download
3558400.750.473.000.43Download
3559150.800.12 / 0.501.303.931 /
0.669		Download
3559601.000.621.8240.24Download
3551981.050.51.40.610Download
3552001.140.43 / 0.1242.404.81Download
3552011.140.124 / 0.4304.931.129 / 4.809Download
3544501.160.30 / 0.301.801.67 / 1.67Download
3577861.410.5022.001.20Download
3567851.420.622.750.86Download
3547101.490.532.651.02Download
3559571.80.43.0

1.1Download
3557551.940.15 / 0.151.703.570 / 3.570Download
3551502.000.53.001.4Download
3551512.000.5043.001.029Download
3554102.510.201.8051.84Download
3556152.510.2012.051.731Download
3559452.510.3173.001.761Download
3563002.540.664.001.55Download
3551602.730.554.002.37Download
3553902.750.554.502.16Download
3554402.760.52 / 0.264.707.090 / 2.713Download
3553922.800.64.001.5Download
3556602.9760.524.001.56Download
3543303.100.76.3251.8Download
3553303.100.776.3251.59
3535153.500.43.002.3Download
3555453.500.383.502.3Download
3559703.700.211.803.030Download
3577754.000.66.3252.4Download
3576104.000.6166.3252.691Download
3577654.000.616.3252.37Download
3559404.020.173.003.37Download
3543404.030.646.3252.68Download
3556254.130.555.5852.2Download
3550224.470.475.423.08Download
3543504.500.44.702.2Download
3549964.500.303.003.46Download
3552304.500.556.3253.08Download
3544534.600.56.002.7Download
3544305.000.22.004.37Download
3541055.500.67.203.7Download
3541306.000.213.004.90Download
3545506.100.182.794.87Download
3541716.200.304.704.10Download
3551106.200.47.203.5Download
3545256.700.446.6504.9Download
3541156.800.59.204.3Download
3553757.50.36.515.8Download
35424080.59.9365.9Download
3540609.60.36.3258.13Download
3543069.90.36.3358.4Download
354125100.5117.8Download
355561100.6157Download
354220110.37.27.9Download
354061110.246.3259.56Download
354062110.2469.66Download
354064110.269.3Download
355397110.37.210Download
354058120.226.32510.57Download
354057130.26.32511.58Download
35456013.860.186.32512.11Download
354059140.196.32512.63Download
35412015.040.154.98513.19Download
35426015.290.166.513.98Download
35428018.40.156.517.11Download
354850220.136.32520.41Download

Standard Coatings

LightPath offers a variety of multilayer broadband coatings to reduce the back reflection from a nominal 6% for uncoated lenses. The choice of which AR coating is appropriate depends on the type of glass the lens is made from and the wavelength at which the lens will be used.

Custom coatings are available upon request

Lens SeriesCoatingWavelength RangeReflectivity
352xxx, 353xxx, 354xxx, 355xxxMLBB-A350 Ð 700nmRavg < 0.50%
352xxx, 354xxx, 355xxxMLBB-B600-1050nmRmax < 1.0%
352xxx, 354xxx, 355xxxMLBB-C1050-1600nmRmax < 1.0%
355xxxMLBB-Q1300-1700nmRmax < 0.25%
357xxxUVA350-600nmRmax < 1.0%

Infrared Laser Collimation Lenses

Our infrared collimating lenses transmits very well from 2-14μm. These lenses are ideal for the collimation and focusing of quantum cascade lasers and other long wavelength laser sources. Standard and custom AR coatings are available.

Part NumberDesign WavelengthNumerical ApertureClear ApertureEffective Focal LengthOuter DiameterWorking DistanceCenter Thickness
3900362.5μm0.565.0mm4.0mm6.5mm3.05mm2.50mm
3900422.5μm0.2310.0mm19.04mm12.5mm16.63mm5.00mm
3900172.7μm0.722.6mm1.50mm3.5mm1.24mm1.10mm
3900284.1μm0.567.6mm5.95mm8.0mm5.0mm2.50mm
3900294.2μm0.862.5mm0.91mm3.0mm0.66mm0.90mm
3900937.8μm0.715.0mm3.0mm6.5mm2.35mm2.62mm
3900109.2μm0.833.0mm1.47mm4.5mm0.63mm2.18mm
3900379.2μm0.854.0mm1.87mm5.5mm0.72mm3.00mm

Whitepaper

Using Precision Molded Aspheres

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