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About

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TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

Steinheil Triplet Achromatic Lenses

Designed for 1:1 Conjugate Ratios
Ideal for Relay Systems
Hastings Triplet Achromatic Lenses Also Available

TECHSPEC® Steinheil Triplet Achromatic Lenses are designed for 1:1 conjugate ratios and utilize symmetry to correct for aberrations. Steinheils are made from a low index center element cemented between two identical high index outer elements. Each lens is edged down to f-numbers with reasonable aberration correction at increased fields. TECHSPEC® Steinheil Triplet Achromatic Lenses feature small diameters that allow for mounting in smaller spaces compared to traditional Steinheil lens designs. Steinheil Triplets are ideal for use in relay systems.

Common Specifications

Centering (arcmin):

Bevel:

Protective bevel as needed

Focal Length Tolerance (%):

±1

Focal Length Specification Wavelength (nm):

587.6

Surface Quality:

40-20

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Wavelength Range (nm):

400 - 700

Products
Technical Information
Accessories
Related Products
Custom
Resources

Products

Dia. (mm)	EFL (mm)	BFL (mm)	CT (mm)	Substrate	Coating	Stock Number	Price	Buy

6.25 6.25	12.50 12.50	8.94 8.94	9.00 9.00	N-BASF64 / N-BK7 / N-BASF64 N-BASF64 / N-BK7 / N-BASF64	MgF2 (400-700nm) MgF₂ (400-700nm)	#47-673	96.05 £96.05 Qty 6+ £76.50 Request Quote	In Stock ×
9.00 9.00	18.00 18.00	12.85 12.85	12.96 12.96	N-BASF64 / N-BK7 / N-BASF64 N-BASF64 / N-BK7 / N-BASF64	MgF2 (400-700nm) MgF₂ (400-700nm)	#47-674	96.05 £96.05 Qty 6+ £76.50 Request Quote	3-4 days ×
12.50 12.50	25.00 25.00	17.82 17.82	18.00 18.00	N-BASF64 / N-BK7 / N-BASF64 N-BASF64 / N-BK7 / N-BASF64	MgF2 (400-700nm) MgF₂ (400-700nm)	#47-675	106.25 £106.25 Qty 6+ £85.00 Request Quote	In Stock ×
25.00 25.00	50.00 50.00	40.60 40.60	25.80 25.80	N-LASF45 / N-BK7 / N-LASF45 N-LASF45 / N-BK7 / N-LASF45	MgF2 (400-700nm) MgF₂ (400-700nm)	#67-422	114.75 £114.75 Qty 6+ £91.80 Request Quote	Contact Us ×

Technical Information

Accessories

Related Products

Achromatic Lenses

Hastings Triplet Achromatic Lenses

Relay Lenses and Couplers

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Resources

Filter

Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

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An Introduction to Optical Coatings

Optical coatings are used to influence the transmission, reflection, or polarization properties of an optical component.

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Lens Geometry Performance Comparison

This comparison of the performance of aspheric, achromatic, and spherical PCX lenses in different situations reveals the ideal use cases for each type of lens.

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Achrotech: achromat cost versus performance for conventional, diffractive, and GRIN components

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Why Use an Achromatic Lens?

Want to know why you should use an achromatic lens? Find out more about achromatic lenses including the anatomy, notable features, and more at Edmund Optics

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Achromatic Lenses Review

Learn about EO's most popular family of optical lenses and discover if achromatic lenses are ideal for your next application.

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How is the location of the principal plane of a negative achromatic lens calculated?

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Abbe-Number

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Achromatic Lens

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Crown Glass

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Doubler Tube

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Doublet Lens

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Flint Glass

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Dispersion

Dispersion is the dependence of the phase velocity or phase delay of light on another parameter, such as wavelength, propagation mode, or polarization.

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Aspherized Achromatic Lens Review

Aspherized Achromatic Lenses, exclusive to Edmund Optics, are doublet lenses consisting of two cemented optical elements that are matched for their color-correction ability and small RMS spot size.

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What is the difference between the effective focal length and the back focal length?

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Apochromatic

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Back Focal Length (BFL)

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Dispersion

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Hybrid Molding

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Sag

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Aspherized Achromatic Lenses

Want an inside look at Aspherized Achromatic Lenses? Learn about the advantages, composition, and aspherized process at Edmund Optics.

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Why Choose an Achromatic Cylinder Lens?

Debating whether or not to use a traditional cylinder lens or an achromatic cylinder lens? Discover the benefits of achromatic cylinder lenses at Edmund Optics.

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Aberrations

Need help understanding aberration theory? Learn about a few fundamental concepts to help clarify your understanding at Edmund Optics.

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What is the difference between an inked lens and a non-inked one?

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If I want to design with your lenses and lens assemblies, how do I get the information that I need?

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Now that I have chosen my lens, how do I mount it?

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Center Thickness (CT)

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Chromatic Focal Shift

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Conjugate Distance

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Épaisseur de bord

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Distance focale effective (EFL)

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Finite/Finite Conjugate

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How to Determine Magnification of an Optical Lens Setup

When doing basic imaging, how do you determine the magnification an optical lens will provide?

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Understanding Collimation to Determine Optical Lens Focal Length

Collimated light occurs when light rays travel parallel to each other.

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How to Form an Image with an Optical Lens Setup

Although a common misconception, individual optical lenses do not always form an image when the object plane is placed a focal length away from the lens.

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Modifying Stock Optics Tip #4: Add A Coating To A Stock Lens

Join Andrew Fisher, Manufacturing R&D Engineer at Edmund Optics, as he discusses some tips for modifying stock optical components to fit your application's needs.

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Irregularity

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Radius of Curvature

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BBAR Coating

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Diopter

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Anti-Reflection (AR) Coating

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Bevel

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Seamed Edge

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Introduction to Basic Ray Optics

An understanding of refraction and basic ray optics is a critical foundation for understanding more complicated optical concepts and technologies.

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Transmission

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How do I clean my optics?

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Clear Aperture (CA)

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Refraction

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Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

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Surface Quality

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The Benefits of Color-Corrected Optical Lenses

Color-corrected optical lenses are ideal for many applications because they reduce multiple aberrations. Learn more about the advantages at Edmund Optics.

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