Stepped Achromatic Lens for Custom Optical Assemblies

Stepped Achromatic Lenses are precision cemented optical lenses with a stepped edge or customized mechanical structure. The optical design usually consists of two lens elements made from different optical glass materials to reduce chromatic aberration and improve focusing performance.

Compared with standard achromatic lenses, step achromatic lenses offer better mechanical compatibility for optical modules, lens holders, compact instruments, and special assembly structures. The stepped design helps improve positioning accuracy, reduce assembly difficulty, and support stable optical alignment.

Realpoo Optics provides custom step achromatic lenses according to customer drawings, samples, optical design files, or assembly requirements. We can customize the lens diameter, step size, focal length, glass material, coating, edge blackening, and mounting structure.

Key Features

• Achromatic design for reduced chromatic aberration
• Stepped edge structure for easy positioning and assembly
• Suitable for compact optical modules and precision instruments
• Custom step diameter, thickness, and mechanical dimensions available
• Improved image clarity and focusing stability
• AR, BBAR, MgF2, and custom coatings available
• Edge blackening available to reduce stray light
• OEM production based on drawings or samples

Common Specifications

• Lens Type: Step achromatic lens / stepped achromatic lens
• Structure: Cemented doublet or customized achromatic assembly
• Material: N-BK7, H-K9L, F2, H-ZF series, fused silica, or custom optical glass
• Diameter: Customized
• Step Diameter: Customized according to assembly requirements
• Focal Length: Customized positive or negative focal length
• Surface Quality: 60/40, 40/20, or higher precision upon request
• Surface Accuracy: λ/4, λ/8, λ/10 available
• Centering Accuracy: ≤3 arc minutes or customized
• Coating Options: MgF2, VIS AR, NIR AR, VIS-NIR BBAR coating
• Edge Treatment: Fine ground, polished edge, blackened edge
• Production Type: Prototype, small batch, and volume production

Applications

Step Achromatic Lenses are widely used in:

• Optical lens assemblies
• Laser collimation systems
• Imaging systems
• Microscope optical modules
• Medical optical devices
• Machine vision systems
• Fiber optical instruments
• Inspection and measurement equipment
• Compact optical instruments
• Customized optical modules

Custom Step Achromatic Lens Manufacturing

Realpoo Optics specializes in custom optical components and precision lens processing. For step achromatic lenses, we can manufacture according to your optical and mechanical requirements, including special step structures, tight dimensional tolerances, optical coatings, cementing, centering, and edge blackening.

Our manufacturing process includes precision grinding, polishing, coating, cementing, alignment, inspection, and packaging. Whether you need prototype development or batch production, Realpoo Optics can provide reliable step achromatic lens solutions for your optical system.