6mm diameter 800-1100nm wavelength 4mm focal length optical glass aspherical lens

6mm diameter 800-1100nm wavelength 4mm focal length optical glass aspherical lens

Optical Aspherical Lens

6mm diameter aspherical lens

custom 800-1100nm aspherical glass lens

factory offer optical aspheric lens

High-precision molded optical glass aspherical lens with 6mm clear aperture and 4mm effective focal length, designed for compact infrared and near-infrared (NIR) imaging or collimation systems operating in the 800–1100nm wavelength range.

The aspheric profile eliminates spherical aberration and reduces the number of elements required in the optical train, making it ideal for miniature camera modules, laser diode collimators, fiber coupling, and biometric sensor optics.

Anti-reflection coated for 800–1100nm (BBAR, Ravg <0.5%). Custom glass types, NA, and conjugate distances available for OEM projects.

Description

6mm diameter 800-1100nm wavelength 4mm focal length optical glass aspherical lens

Specifications:

Lens Type: Singlet Aspherical Lens (Molded / Grinding & Polishing Aspheric)

Material: N-BK7 / H-LaK / N-SF6 / D-ZK3 / Optical Crown Glass (NIR-optimized) / Custom

Diameter (Clear Aperture): 6mm (Ø6mm)

Effective Focal Length (EFL): 4mm (Custom 3mm–50mm available)

Back Focal Length (BFL): Specified per design (typically ~3.2–3.8mm for EFL=4mm)

Numerical Aperture (NA): ~0.65–0.75 (depending on beam clearance)

Conic Constant / Asphere Coefficients: Optimized per wavelength band (provided on request)

Center Thickness: 1.5mm–3.5mm (design dependent)

Dimension Tolerance: ±0.02mm / ±0.05mm

Center Thickness Tolerance: ±0.02mm

Surface Figure (Base Sphere): λ/4 @ 632.8nm (measured before aspheric departure)

Surface Roughness (RMS): <20nm (Molded) / <5nm (Polished)

Surface Quality (Scratch-Dig): 60-40 / 40-20 / 20-10

Clear Aperture: ≥90% of Ø6mm

Edge Treatment: Black Edge Painted (Optional) / Bevel 0.05–0.1mm × 45°

Coating: Broadband AR 800–1100nm (Ravg<0.5%), also available @ 850nm / 940nm / 1064nm V-Coat / Custom

Operating Wavelength: 800nm – 1100nm (Optimized for NIR)

Transmission: >99% per surface with AR coating

Operating Temperature: -40°C to +85°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