Description
Diameter 7mm focal length 8mm aspheric lens factory custom 400-700nm D-ZK2N aspherical lens
Specifications:
Lens Type: Optical Glass Aspherical Singlet Lens (Molded / Ground & Polished)
Material: D-ZK2N (OHARA) nd=1.5891, νd≈61.0 / Equivalent Low-Dispersion Crown (Hoya D-ZK3 / Schott N-BK7 substitute available)
Diameter (Clear Aperture): 7mm (Ø7mm)
Effective Focal Length (EFL): 8mm (Custom 5–100mm available)
Back Focal Length (BFL): Specified per design (typically ~6.5–7.6mm for EFL=8mm)
Numerical Aperture (NA): ~0.41 (approx., depends on beam clearance)
Center Thickness: 1.5mm – 4.0mm (design dependent)
Dimension Tolerance: ±0.02mm / ±0.05mm
Center Thickness Tolerance: ±0.02mm
Surface Figure (Base Sphere): λ/4 @ 632.8nm
Surface Roughness (RMS): <20nm (Molded) / <5nm (Polished)
Surface Quality (Scratch-Dig): 60-40 / 40-20 / 20-10
Clear Aperture: ≥90% of Ø7mm
Edge Treatment: Ground / Edge Blackened (Optional) / Bevel 0.1mm × 45°
Aspheric Coefficients: Optimized for 400–700nm visible band (available on request)
Coating Options:
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Broadband AR 400–700nm (Ravg<0.5%) ← Standard
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MgF₂ AR @ 550nm
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V-Coating @ 532nm / 635nm / 850nm / Custom
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Uncoated (Available)Operating Wavelength: 400–700nm (Visible Optimized)Transmission: >99% per surface with BBAR coatingOperating Temperature: -40°C to +80°C
We are professional manufacture on the optical lenses &lasers for over 20 years experience.
With the advanteges,we offer optical products in the fileds of University laboratory, Industry, Scientific research,Medical treatment, Mechanical equipments, lasers and Construction industry and so on.
We can provide optical lenses, optical prisms, high-precision Powell prisms, right-angle prisms, laser lenses, filters, aspherical lenses, collimating lenses, optical glass lenses, optical reflectors, cylindrical lenses, laser modules, laser heads, optical glued lenses, optical rod mirrors, etc.
Looking forward to communicating whether we have the opportunity to cooperate. For the lens/laser products you need, I would like to quote our competitive price.
Please contact for any custom needs,
Contact:Rebecca Xu
