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See all 3 Products in Family

Linear Variable Longpass Filter

Name: Linear Variable Longpass Filter
SKU: 88-363
Price: ₹1,39,635

Stock #88-363 Contact Us

- +

₹1,39,635

Qty 1-9
₹1,39,635

Qty 10+
₹1,25,280

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Product Downloads

STEP:step

PDF Drawing:pdf

IGES:igs

eDrawing:eprt

EO Spec Sheet

Specifications
Product Details
Technical Information
Accessories
Related Products
Imaging Lens Selector
Frequently Purchased Together
Resources

Specifications

General

Type:

Longpass Filter

Physical & Mechanical Properties

Dimensions (mm):

60.0 x 15.0

Length (mm):

60.00

Thickness (mm):

3.00

Width (mm):

15.00

Aperture (mm):

0.2 x 8.0

Optical Properties

Optical Density OD (Average):

≥3.1

Fused Silica (Corning 7980)

Coating:

Variable

Optical Density Steps:

Edge: 340 - 420nm, >3.3 from 300nm
Edge: 420 - 500nm, >3.3 from 300nm
Edge: 500 - 850nm, >3.1 from 350nm

Transmission (%):

>92

Transmission Steps (%):

Edge: 300 - 420nm, >92% over 40nm
Edge: 420 - 700nm, >92% over 40nm
Edge: 500 - 850nm, >92% over 40nm

Wavelength Range (nm):

300 - 850

Regulatory Compliance

RoHS 2015:

Compliant

Reach 223:

Compliant

Certificate of Conformance:

View

Product Details

A Linear Variable Edge Filter has an interference coating intentionally wedged in one direction to create a linear shift of the center wavelength across the length of the substrate. This shift allows for the broad filtering capabilities demonstrated by the linear variable shortpass, longpass, and dichroic edge filters. Shortpass and longpass edge filters work inversely of one another; the shortpass filter passes light throughout the filter’s length until a blocking band is reached, whereas the longpass filter blocks light until a transmission band is reached. Blocking and transmission bands are adjustable by reorienting the filter to the light source.

With its broad blocking and transmission range, a single Linear Variable Edge Filter can replace an entire filter set. When synchronized with a single moving grading spectrometer, combined longpass and shortpass edge filters reduce scatter light and harmonics. In addition, combined linear variable filters can be used as a single variable excitation filter for various fluorescence applications using white light sources.

Use in Pairs to Create High Efficiency Custom Bandpass Filters
Optimum Input Beam Diameter of 0.2 x 8.0mm
OD3 Blocking
Linear Variable Bandpass Filters Also Available

Linear Variable Edge Filters are designed to be used individually or in pairs to selectively block or transmit targeted wavelengths. Linear Variable Edge Filters are available as longpass, shortpass, or dichroic filters. Longpass edge filters transmit wavelengths greater than the cut-on wavelength, whereas shortpass edge filters transmit wavelengths shorter than the cut-off wavelength. Dichroic edge filters operate similarly to longpass edge filters, but ensure that unwanted wavelengths are reflected. When combined, Linear Variable Edge Filters can operate as laser line filters or variable bandpass filters with tunable center wavelengths and bandwidths.

Accessories

Imaging Lens Selector

Frequently Purchased Together

40mm Dia. x 250mm FL, MgF<sub>2</sub> Coated, Achromatic Doublet Lens

#32-935 - 40mm Dia. x 250mm FL, MgF₂ Coated, Achromatic Doublet Lens

₹13,572

#39-417 - 1.5" x 3.25" 200 filters, Rosco Color Filter Swatchbook

₹3,045

#45-513 - 25.0mm Dia. x 125.0mm FL, VIS-NIR Coated, Plano-Convex Lens

₹4,133

#48-614 - 25mm Diameter VIS-NIR Coated, Simple Lens Kit

₹72,645

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

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

Optical Filter Orientation

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

View Now

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

View Now

How are notch filters designed and manufactured?

View Now

Bandpass Filter

View Now

Bandwidth

View Now

Cavity

View Now

Dichroic Coating

View Now

Dichroic Filter

View Now

Filter, Colored Glass

View Now

Ripple

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

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

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

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

Polarizers Review

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

View Now

What happens when a filter is tilted?

View Now

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

View Now

Blocking

View Now

Blocking Range

View Now

Central Wavelength (CWL)

View Now

Cold Mirror

View Now

Full Width at Half Maximum (FWHM)

View Now

Interference Filter

View Now

Notch Filter

View Now

Peak Transmittance

View Now

Rugate Notch Filter

View Now

Shortpass Filter

View Now

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

How do I clean my filters?

View Now

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

View Now

What are some of the most common filter substrates?

View Now

How do I select the right filter for my application?

View Now

What types of filters can Edmund Optics® manufacture?

View Now

Do you have mounts for square or rectangular optics?

View Now

Cut-Off Wavelength

View Now

Cut-On Wavelength

View Now

Filter

View Now

Fluorescent Filter

View Now

Optical Density (OD)

View Now

Stopband

View Now

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

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

Parallelism

View Now

Surface Flatness

View Now

How do I clean my optics?

View Now

Clear Aperture (CA)

View Now

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

Linear Variable Longpass Filter

Specifications

General

Physical & Mechanical Properties

Optical Properties

Regulatory Compliance

Product Details

Accessories

Related Products

Imaging Lens Selector

Frequently Purchased Together

Resources

Confocal Microscopy

Custom Bandpass Filter using Shortpass and Longpass Filters

Optical Filter Orientation

Optical Filters Review

Optical Filter Coatings: Comparison of Traditional and Hard-Sputtered

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

Trending in Optics: The Future of Optical Filters

Fluorophores and Optical Filters for Fluorescence Microscopy

Optical Filters

Machine Vision Filter Technology

Manipulating Wavebands: Color & Filters

Polarizers Review

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

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?

Do you have mounts for square or rectangular optics?

Cut-Off Wavelength

Cut-On Wavelength

Filter

Fluorescent Filter

Optical Density (OD)

Stopband

Optical Microscopy Application: Fluorescence

Basic Principles of Raman Scattering and Spectroscopy

Fluorescence Microscopy: In-Line Illumination with Imaging Filters

Removing Protective Plastic Coating

Parallelism

Surface Flatness

How do I clean my optics?

Clear Aperture (CA)

Edmund Optics Global Manufacturing Facilities

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