Polished & molded precision aspheric lens

  • Optical material: N-BK7 / S-LAH64
  • Visible and near-infrared wave band with high transmittance
  • Large numerical aperture and large aperture
  • Reduction of spherical aberration
  • Suitable for small field of view applications such as fiber collimation, coupling and imaging

Two kinds of material for common use of precision polishing aspherical lens: N-BK7 and S-LAH64, which has higher transmittance in visible and near infrared wave band, and S-LAH64 has higher refractive index than N-BK7. therefore, it is usually used to make lenses with high numerical aperture and short focal length.

Compared with the ordinary spherical lens, the aspheric lens has larger numerical aperture and lower f/# , smaller spherical aberration, higher diffraction limit, better optical performance and fewer components, thus simplifies the system design.

These precision polished aspherical lenses are more suitable for small field of view applications such as fiber collimation, coupling and imaging. Compared with the molded aspherical focusing lens, the precision polishing has better surface quality and beam quality.

In order to ensure the best performance, the beam incident on the flat side of the lens is used for point source collimation, and the beam incident on the more curvature side is used for collimating beam focusing.

ProjectAspherical
Materialoptic glass, quartz, crystal, infrared material etc.
Diameter(mm)Ф3~Ф200
OD TOL(mm)±0.01~±0.2
Thickness tolerance(mm)±0.01~±0.1
Surface quality10/5~80/50
Surface precision(PV)0.1-1μm
Centering(Beam diviation)30″~5′(Δt≤0.02)
CoatingCustomized
  • Optical lenses
  • Prisms
  • Windows
  • Laser lenses
  • Specular mirrors
  • Metal coating mirrors
  • Cylinder mirrors
  • Octahedral rotary mirrors
  • Medium broadband mirror
  • Spike filter
  •  Infrared optical lenses( Silicon, Germanium, Zinc selenium etc)

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Precision aspheric lens specifications

Item No.Diameter(mm)FL(mm)CANACT(mm)ET(mm)BFL(mm)
DG0306003.006.002.7/2.20.221.501.275.20
DG0330803.003.772.500.301.501.202.90
DG302003.002.002.15/1.550.541.871.231.09
DG0471004.007.103.650.252.201.705.80
DG4762004.706.203.700.283.342.744.09
DG4780004.708.004.200.282.902.505.86
DG0610006.0010.745.100.242.361.729.66
DG0612006.0012.005.000.212.361.8510.55
DG0615006.0015.005.600.272.501.9713.52
DGF0610006.0010.005.130.222.361.5811.93
DG6340006.334.025.100.603.301.702.36
DGF6351076.3510.003.5/30.173.001.808.25
DG0708007.008.006.000.302.501.507.55
DG0811008.0011.207.600.182.661.6411.40