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

1.5 OD 25mm Diameter VIS-NIR ND Filter

×
Stock #26-509 3-5 days
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
S$75.40
Qty 1+
S$75.40
Volume Pricing
Request Quote
Product Downloads

Specifications

General

Type:
Neutral Density Filter
Note:
Optical density values are average over specified blocking wavelength range.

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.00/-0.25
Thickness (mm):
1.00 ±0.20
Clear Aperture (%):
90

Optical Properties

Angle of Incidence (°):
0
Optical Density OD (Average):
1.5
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Coating:
Surface 1: Inconel
Reflection (%):
55.00
Surface Quality:
60-40
Transmission (%):
3.2
Blocking Wavelength Range (nm):
350 - 1100
Transmitted Wavefront, P-V:
λ/4 (measure pre-coating)
Neutrality:
±5% of Optical Density

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
REACH 241:

Product Details

  • Consistent Transmission from 350 – 1100nm
  • Optical Densities from 0.1 to 3.0 Available
  • Combine Filters for Custom Optical Densities

TECHSPEC® VIS-NIR Neutral Density (ND) Filters feature a constant transmission from 350 – 1100nm and are used to attenuate many broadband visible and NIR light sources. Optical Densities are additive allowing these filters to be stacked to achieve custom optical density values.  For example, stacking filters with OD values of 0.2 and 2.0 yields a resultant optical density of 2.2. TECHSPEC® VIS-NIR Neutral Density (ND) Filters are available in a range of 12.5, 25, and 50mm diameters as well as a 50 x 50mm square option in various increments of optical densities from 0.1 to 3.0.  These filters are ideal for use in laser and photometer applications, where excessive power can cause damage or inaccurate results.

Note: Low optical density filters (0.1, 0.15, and 0.2 OD) are coated with thin layers of Inconel and their performance may shift overtime. To prolong the lifetime of these filters, we recommend using non-contact cleaning methods (such as compressed air) to prevent damage to the coating and avoiding the use of these filters in humid environments to prevent oxidation. 

Related Products

Frequently Purchased Together

Resources

Filter

Confocal Microscopy

Confocal microscopy provides high resolution, elimination of out-of-focus glare due to spatial filtering, and reduction of light-induced damage to the sample.

View Now

Optical Filters

Do you want to learn about optical filters? Find terminology, fabrication techniques, a selection guide, and application examples at Edmund Optics.

View Now

How do I clean my optics?

How do I clean my filters?

What is the largest diameter filter available from Edmund Optics®?

What are some of the most common filter substrates?

How do I select the right filter for my application?

What types of filters can Edmund Optics® manufacture?

Filter

Optical Density (OD)

Stopband

Cleaning Optics

Looking for the best way to clean optics? Learn more about the different cleaning products and methods, along with tips to handle optics at Edmund Optics.

View Now

Quick Tips for Cleaning Optics

Knowing how to properly clean your optical components is an easy way to maintain system performance and save money by decreasing the risk of component damage.

View Now

First Contact Polymer Solution

First Contact Polymer Solution is an easy-to-use liquid polymer for cleaning the surfaces of lenses and other optical components (see below for a more extensive list)

View Now

How do I clean my micro optics?

Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

View Now

Understanding Neutral Density Filters

Neutral Density (ND) Filters are designed to evenly reduce transmission. For more information on specifications and products, read more at Edmund Optics.

View Now

What is an ND Filter?

Can I place ND filters back-to-back and increase optical density?

What is the difference between using an absorptive ND filter and a reflective ND filter?

How should I orient my reflective ND or interference filter?

Continuously Variable Apodizing Filter

Neutral Density Filter (ND)

How do I clean my mirrors?

Is it okay to clean an infrared lens, for example one made of germanium, with ethanol?

Clear Aperture (CA)

Custom Bandpass Filter using Shortpass and Longpass Filters

Do stock filters not meet your bandwidth or CWL requirements? Learn how custom bandpass filters are created using short or longpass filters at Edmund Optics.

View Now

The Importance of Optical Filter Orientation, Angle of Incidence, and Cone Half Angle

Don't let your optical filter performance be negatively impacted by the AOI and CHA of your light source.

View Now

Optical Filters Review

Optical Filters are used to selectively transmit or block certain wavelengths or wavelength ranges within optical systems.

View Now

Optical Filter Coatings: Comparison of Traditional and Hard-Sputtered

Confused about the differences between traditional-coated and hard-coated optical filters?

View Now

Selecting Color Filter Glass for Life Science Applications

What type of material should I look for in a filter?

How are notch filters designed and manufactured?

Bandpass Filter

Bandwidth

Cavity

Dichroic Coating

Dichroic Filter

Filter, Colored Glass

Ripple

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

Trending in Optics: The Future of Optical Filters

New optical filters are being developed due to the advancements in applications and technologies. Learn more about the future of filters at Edmund Optics.

View Now

Fluorophores and Optical Filters for Fluorescence Microscopy

Want to know more about fluorophores and optical filters for fluorescence microscopy? Find out more information and in stock optical filters at Edmund Optics.

View Now

Machine Vision Filter Technology

While working with machine vision, there are different types of filters that can be used to alter the image. Find out about the different types at Edmund Optics.

View Now

Polarizers Review

Polarizers are used in a wide range of imaging and research and development applications.

View Now

Manipulating Wavebands: Color & Filters

Nick Sischka explains why color consideration and illumination are so important for machine vision in this hands-on demonstration from the Edmund Optics 2021 Imaging Innovation Summit.

View Now

What happens when a filter is tilted?

How do I determine which side of my filter is coated?

Blocking

Blocking Range

Central Wavelength (CWL)

Cold Mirror

Full Width at Half Maximum (FWHM)

Interference Filter

Notch Filter

Peak Transmittance

Rugate Notch Filter

Shortpass Filter

Fluorescence Imaging with Laser Illumination

Fluorescence imaging systems are composed of three major components, an illumination source, a photo-activated fluorophore sample, and detector.

View Now

Do you have mounts for square or rectangular optics?

Cut-Off Wavelength

Cut-On Wavelength

Fluorescent Filter

Optical Microscopy Application: Fluorescence

Wondering how fluorescence microscopy works? Find out about the technique, systems, and more at Edmund Optics.

View Now

Basic Principles of Raman Scattering and Spectroscopy

Raman spectroscopy is a technique used to identify the chemical composition of samples based on how light scatters off of them. Learn more & view related optics

View Now

Fluorescence Microscopy: In-Line Illumination with Imaging Filters

Want to know about fluorescence microscopy? Read this article by a Biomedical Product Line Engineer at Edmund Optics to learn more.

View Now

Transmission

Parallelism

Surface Quality

Surface Flatness