eo_logo
 
Product added to cart
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. x 75mm EFL, UV-VIS Coated, Near UV Achromatic Lens

×
Stock #65-978 3-5 days
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
S$239.25
Qty 1-5
S$239.25
Qty 6+
S$191.40
Volume Pricing
Request Quote
Get Product Downloads

Product Details

Type:
Achromatic Lens

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.025
Clear Aperture CA (mm):
24.00
Centering (arcmin):
<1
Center Thickness CT (mm):
8.00 ±0.20
Center Thickness CT 1 (mm):
5.50 ±0.10
Center Thickness CT 2 (mm):
2.50 ±0.10
Edge Thickness ET (mm):
5.44
Bevel:
Protective bevel as needed

Optical Properties

Effective Focal Length EFL (mm):
75.00
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
71.09
Focal Length Specification Wavelength (nm):
405.00
Radius R1 (mm):
45.50
Radius R2 (mm):
-36.34
Radius R3 (mm):
-96.60
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
40-20
f/#:
3
Numerical Aperture NA:
0.17
Coating:
UV-VIS (345-700nm)
Coating Specification:
Ravg ≤1.5% @ 345 - 700nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Wavelength Range (nm):
345 - 700

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • Excellent Transmission in 345 – 700nm Range
  • Ideal for use with NUV LEDs and Mercury Lamps
  • Low-Cost, Cemented Design

TECHSPEC® Near-UV (NUV) Achromatic Lenses are specifically designed to minimize the spot size for polychromatic illumination in the 345 – 700nm region. The achromatic lenses are ideal for use in fluorescence applications, as well as for simple focusing of common UV light sources, such as Mercury Arc Lamps, UV LEDs, and Tripled Nd:YAG lasers.  Featuring a simple cemented design, the lenses are an excellent alternative to air-spaced doublets and triplets for the UV. TECHSPEC® Near-UV (NUV) Achromatic Lenses feature >90% transmission at 360nm and provide >50% transmission at 334nm. The lenses feature either N-FK5 or F2HT substrate and a UV-VIS coating. 

Filter

Anti-Reflection (AR) Coatings

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

View Now

An Introduction to Optical Coatings

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

View Now

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.

View Now

Ultraviolet fatigue testing of laser optics

UV Optics: Tighter Tolerances and Different Materials

UV Lenses require extremely tight tolerances and novel materials such as sapphire. Learn more at Edmund Optics.

View Now

Why Laser Damage Testing is Critical for UV Laser Applications

Laser Induced Damage Threshold describes the maximum quantity of laser radiation an optic can take before damaging. Learn more at Edmund Optics.

View Now

Can BK7 be used for UV applications?

Ultraviolet (UV) Spectrum

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

Ultraviolet Lasers – TRENDING IN OPTICS: EPISODE 2

A new generation of compact, cost-effective ultraviolet (UV) lasers is allowing more applications to benefit from the increased precision of UV wavelengths.

View Now

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

View Now

Achromatic Lenses Review

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

View Now

Microlithography

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

Abbe-Number

Achromatic Lens

Crown Glass

Doubler Tube

Doublet Lens

Flint Glass

UV vs. IR Grade Fused Silica

UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.

View Now

Hyperspectral and Multispectral Imaging

Are you trying to gauge depth of field in your imaging system? Take a closer look at this article on depth of field calculations at Edmund Optics.

View Now

You offer many substrates for UV and IR applications. How do I know which is best for me?

Dispersion

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

View Now

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.

View Now

Top Optics Trends of 2021 – TRENDING IN OPTICS: EPISODE 3

Several of the most interesting trends in optics and photonics of 2021 were the landing of the Perseverance Rover on Mars, Stemmed Mirrors, minimizing thermal lensing in ultrafast laser systems, and developments in ultraviolet lasers.

View Now

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

Apochromatic

Back Focal Length (BFL)

Dispersion

Hybrid Molding

Sag

Aspherized Achromatic Lenses

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

View Now

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.

View Now

Aberrations

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

View Now

The factory calibration of your UV-VIS-NIR Spectrometer only includes wavelength but not response (irradiance). I can measure raw data which is only usable for transmittance/reflectance measurements. How do I get irradiance measurements?

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

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

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

Center Thickness (CT)

Chromatic Focal Shift

Conjugate Distance

Épaisseur de bord

Distance focale effective (EFL)

Finite/Finite Conjugate

How to Determine Magnification of an Optical Lens Setup

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

View Now

Understanding Collimation to Determine Optical Lens Focal Length

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

View Now

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.

View Now

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.

View Now

Irregularity

Radius of Curvature

BBAR Coating

Diopter

Anti-Reflection (AR) Coating

Bevel

Seamed Edge

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.

View Now

Transmission

How do I clean my optics?

Clear Aperture (CA)

Refraction

Edmund Optics Global Manufacturing Facilities

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

View Now

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.

View Now

Surface Quality

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.

View Now