Achromatic Doublet Lens
Achromatic Doublet Lenses are precision two-element lenses, typically a positive and a negative element cemented together, designed to reduce chromatic aberration and provide consistent focal length across a defined wavelength range. Chenyu Optics manufactures achromatic doublet lenses in BK7, fused silica, optical glass and infrared materials, with custom focal length, diameter, surface quality and coating according to customer drawings.
Achromatic Doublet Lens Overview
Achromatic Doublet Lenses are precision two-element lenses, typically a positive and a negative element cemented together from two different optical materials, designed to reduce chromatic aberration and provide consistent focal length across a defined wavelength range.
Compared with a single-element lens, the achromatic doublet construction brings two wavelengths to a common focus, improving imaging and focusing performance in systems where color correction and focal length stability are required.
Chenyu Optics supports custom achromatic doublet lens manufacturing according to customer drawings, including custom material, focal length, diameter, thickness, surface quality and coating for prototype and repeat production.
Key Advantages of Achromatic Doublet Lens
Imaging, Beam Shaping & Laser Systems
Achromatic doublet lenses are widely used in laser systems, imaging optics, beam shaping assemblies, machine vision systems and scientific instruments requiring consistent focusing performance across a wavelength range.
Typical Specifications of Achromatic Doublet Lens
| Material Options | BK7, Fused Silica, optical glass, and infrared materials as applicable |
|---|---|
| Coating Options | Uncoated, broadband AR, laser AR, UV AR, IR AR, custom coating |
| Optical Function | Chromatic aberration correction / positive focal length |
| Focal Length | Custom, according to customer drawing |
| Surface Accuracy | Up to λ/10 @ 633 nm |
| Surface Quality | 20-10, 40-20 scratch-dig |
| Dimensions | Custom diameter and thickness available |
| Edge Treatment | Ground, chamfered or polished |
Achromatic Structure / Ray Diagram
Why Choose Chenyu Optics for Achromatic Doublet Lens
Chenyu Optics focuses on drawing-based precision lens manufacturing for laser, imaging and machine vision optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard achromatic doublet lenses.
Manufacturing Capability for Achromatic Doublet Lens
Precision Grinding & Polishing
Controlled grinding and polishing of each element's spherical surfaces for focal length accuracy, surface quality and optical performance.
AR Coating & Cementing
Element cementing and broadband, laser, UV or IR AR coatings selected according to wavelength and application requirements.
Inspection & Packaging
Dimensional inspection, focal length verification, optical performance checking and clean protective packaging before shipment.
Custom Manufacturing Options for Achromatic Doublet Lens
Geometry & Dimensions
Diameter, thickness, focal length and edge treatment can be manufactured according to customer drawings and optical system requirements.
Surface & Optical Quality
Surface accuracy and surface quality can be selected according to imaging or laser application requirements.
Coating Selection
Uncoated, broadband AR, laser AR, UV AR or IR AR coatings can be specified according to the operating wavelength and application environment.
Lens Type Comparison
| Singlet Lens | Air-Spaced Doublet | Cemented Achromatic Doublet | |
|---|---|---|---|
| Chromatic Correction | None; focal length varies with wavelength | Corrected at two wavelengths, with air gap tolerance control | Corrected at two wavelengths, fixed element spacing |
| Surface Configuration | One or two surfaces, single material | Two separate elements, air-spaced | Two elements cemented together |
| Typical Function | Basic focusing or imaging without color correction | Chromatic correction with adjustable element spacing | Compact, stable chromatic correction |
| Typical Applications | Beam shaping, general-purpose focusing | Precision imaging systems requiring spacing control | Laser systems, imaging, machine vision, scientific instruments |
Applications of Achromatic Doublet Lens
Laser Systems
Focusing and beam shaping optics for laser system design.
Imaging Systems
Chromatically-corrected lenses for precision imaging optics.
Beam Shaping
Achromatic doublet lenses for beam expansion and focusing applications.
Machine Vision
Reliable, color-corrected focusing components for machine vision and inspection systems.
Scientific Instruments
Precision optical components for laboratory and research instruments.
Optical Systems Integration
Custom achromatic lenses for OEM optical system assemblies.
Achromatic Doublet Lens FAQ
What is an achromatic doublet lens?
An achromatic doublet lens is a two-element lens, typically cemented together, designed to bring two wavelengths to a common focus and reduce chromatic aberration.
Which materials are available for achromatic doublet lenses?
Common materials include BK7, fused silica, optical glass, and infrared materials, selected according to the operating wavelength.
Are achromatic doublet lenses suitable for laser applications?
Yes. Depending on material and coating selection, achromatic doublet lenses can be used in laser focusing and beam shaping systems.
Can achromatic doublet lens coatings be customized?
Yes. Coating options include uncoated, broadband AR, laser AR, UV AR, IR AR and custom coatings according to wavelength range and application.
What information should I provide for a quotation?
Please provide material, diameter, thickness, focal length, coating type, surface quality, surface accuracy, quantity and drawing if available.
Where can I learn more about achromatic doublet lenses and coatings?
Additional information on achromatic doublet lenses and AR coatings can be found from Edmund Optics.
Related Products for Achromatic Doublet Lens
Need Custom Achromatic Doublet Lenses?
Send us your drawing, material, dimensions, focal length and coating requirements. Chenyu Optics will review the optical specifications and provide a suitable achromatic doublet lens manufacturing suggestion.