Factory offer Triplet lens triplet optical achromatic lens

Factory offer Triplet lens triplet optical achromatic lens

Triplet lens

triplet achromatic lens

optical triplet achromatic lens

Factory-direct high-precision cemented achromatic triplet lens assembly, consisting of three optically matched elements (positive crown, negative flint, and positive crown configuration) designed to correct axial chromatic aberration, spherical aberration, coma, and field curvature across the visible spectrum (400–700nm) or customized wavelength bands.

Superior to standard doublets in terms of residual aberration reduction and image quality, making it ideal for demanding imaging, laser focusing, and collimation applications.

Each triplet lens features edge blackening to suppress stray light and ghost reflections. Available in multiple diameters (1.5mm–50mm), focal lengths, and broadband AR coatings. Suitable for prototype evaluation and volume OEM production with competitive factory pricing.

Description

Factory offer Triplet lens triplet optical achromatic lens

Specifications:

Lens Type: Cemented Achromatic Triplet (3-Element, Crown-Flint-Crown Configuration)

Material Combination: N-BK7 + SF2 + N-BK7 / N-BK7 + SF5 + N-BK7 / N-BK7 + LaSFN9 + N-BK7 / Custom Glass Pairing

Clear Aperture (Diameter): 1.5mm / 3mm / 5mm / 6mm / 8mm / 10mm / 12.7mm / 15mm / 18mm / 20mm / 25mm / 25.4mm / 30mm / 38mm / 50mm / Custom

Effective Focal Length (EFL): 5mm – 300mm (per diameter ratio, f/# customizable)

Back Focal Length (BFL): Specified per design (typically shorter than EFL)

Focal Length Tolerance: ±1% / ±0.5%

Center Thickness Tolerance: ±0.05mm / ±0.1mm

Air Gap / Cement Layer: Optical Epoxy Bonded (No Air Gaps Between Elements)

Centration (Decenter): <3 arc min (Standard), <1 arc min (High Precision)

Surface Figure (Each Element): λ/4 @ 632.8nm (λ/10 available on request)

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

Clear Aperture: ≥90% of diameter

Edge Treatment: Edge Blackened (Matte Black Absorptive Ink/Paint on Outer Periphery) to Suppress Stray Light

Cement: UV-Curable Optical Epoxy / Low-Stress Thermal Optical Adhesive (High Transmission, Minimal Shrinkage)

Coating Options:

Uncoated (Bare Glass)
MgF₂ Single Layer AR @ 550nm
Broadband AR 400–700nm (Ravg<0.5%)
Broadband AR 600–1050nm (VIS-NIR)
V-Coating @ 532nm / 633nm / 850nm / 1064nm / Custom

Design Wavelength (Chromatic Correction): C-Line (656.3nm) & F-Line (486.1nm) corrected to common focus at d-Line (587.6nm)

Operating Wavelength Range: Visible 400–700nm (Standard) / UV-VIS / VIS-NIR / Custom

Operating Temperature: -40°C to +80°C

Storage Temperature: -50°C to +100°C