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  • 400–670nm Short Pass Optical Filter with Precision Multilayer Coating
  • 400–670nm Short Pass Optical Filter with Precision Multilayer Coating
  • 400–670nm Short Pass Optical Filter with Precision Multilayer Coating
  • 400–670nm Short Pass Optical Filter with Precision Multilayer Coating
400–670nm Short Pass Optical Filter with Precision Multilayer Coating400–670nm Short Pass Optical Filter with Precision Multilayer Coating400–670nm Short Pass Optical Filter with Precision Multilayer Coating400–670nm Short Pass Optical Filter with Precision Multilayer Coating

400–670nm Short Pass Optical Filter with Precision Multilayer Coating

  • Product Item : SPOF
  • Category: Optical Filters
  • Type: Short Pass Optical Filter
  • Blocking Direction Above 670nm
  • Cut-off Wavelength: 670 nm
  • Substrate: Optical Glass
  • INQUIRY   EMAIL

400–670nm Pass Band

The filter is designed for transmission across the specified400–670nm wavelength range.

670nm Cut-Off

Wavelengths above670nmare targeted for blocking, helping limit unwanted longer-wavelength light.

High Passband Transmission

The multilayer coating is designed to provide high transmission within the specified pass band.

Precision Multilayer Coating

A multilayer optical coating provides controlled spectral filtering and wavelength selectivity.

Precision Polished Surface

High-precision optical polishing supports clean optical performance and reliable system integration.

Custom Optical Dimensions

Custom sizes are available to match different optical mounts and assemblies.

Custom Wavelength Ranges

Other shortpass wavelength ranges can be customized according to customer requirements.

Product Specifications

Parameter Specification
Product Name 400–670nm Short Pass Optical Filter
Product Type Short Pass / Short Wave Pass Filter
Pass Band 400–670nm
Cut-Off Wavelength 670nm
Blocking Range Above 670nm
Transmission High transmission within pass band
Substrate Optical Glass
Coating Multilayer Optical Coating
Surface Precision Polished
Surface Quality High Precision Polishing
Optical Function Shortpass Spectral Filtering
Size Custom Available
Shape Custom Available
Thickness Custom Available
Other Wavelengths Custom Available
Application Imaging, Optical Instruments, Spectral Filtering, Optical Systems

16. How the 400–670nm Short Pass Filter Works

A short pass optical filter is designed to transmit wavelengths 

shorter than its cut-off region while suppressing longer wavelengths.

For this product:

Pass Band: 400–670nm

Blocking Region: Above 670nm

This spectral behavior allows the filter to select the desired 

visible-light range while reducing unwanted longer-wavelength components.

The actual transition characteristics and spectral performance 

should be evaluated according to the customer's required optical specification.

Optical Performance Advantages

Controlled Spectral Selection

The filter provides controlled transmission within the specified 400–670nm range.

Long-Wavelength Suppression

Blocking above 670nm helps reduce unwanted longer-wavelength 

light reaching downstream optical components.

High Transmission in Pass Band

The multilayer coating is designed to maintain high transmission across the specified pass region.

Precision Optical Surface

Precision polishing helps support stable optical performance and clean integration into optical assemblies.

Stable Coating Structure

The multilayer optical coating provides controlled spectral filtering characteristics for optical system applications.

 Applications

Optical Imaging

Suitable for imaging systems that require transmission within the 400–670nm spectral region while suppressing longer wavelengths.

Optical Instruments

Can be integrated into optical instruments requiring shortpass spectral selection.

Spectral Measurement

Suitable for optical measurement systems where controlled wavelength selection is required.

Machine Vision

Can be used in machine vision systems requiring visible-light spectral filtering.

Imaging Detection

Suitable for optical detection systems requiring suppression of wavelengths above the target cut-off region.

Optical Sensors

Can be considered for optical sensor systems requiring controlled spectral input.

Laboratory Optical Systems

Suitable for research and laboratory optical assemblies requiring shortpass filtering.

Custom Optical Equipment

Can be manufactured according to the spectral and mechanical requirements of customized optical equipment.

Why Choose Our 400–670nm Short Pass Filter?

  • 400–670nm pass band
  • 670nm cut-off wavelength
  • Blocking above 670nm
  • High transmission within pass band
  • Precision multilayer optical coating
  • Precision polished optical surface
  • Optical glass substrate
  • Custom dimensions
  • Custom thickness
  • Custom shapes
  • Other wavelength ranges available
  • OEM / ODM support
  • Suitable for imaging and optical instruments
  • Suitable for spectral filtering applications

Customization Service

We provide customized shortpass optical filters according to optical system requirements.

Customization Options

  • Pass band
  • Cut-off wavelength
  • Blocking range
  • Transmission requirement
  • Diameter
  • Length
  • Width
  • Thickness
  • Round or custom shape
  • Substrate material
  • Coating design
  • Surface quality
  • OEM dimensions
  • Custom packaging

Custom Wavelengths

In addition to the standard400–670nmconfiguration, 

other wavelength ranges can be manufactured according to project requirements.

Custom Sizes

The filter can be supplied in different diameters, rectangular 

dimensions or other mechanical configurations.

Recommended RFQ Information

For an accurate quotation, please provide:

Pass Band + Cut-Off Wavelength + Blocking Requirement + 

Size + Thickness + Surface Quality + Quantity + Application

For example:

Pass Band: 400–670nm + Size: Ø25.4mm + Thickness: 2mm + Quantity: 100 pcs

Customers can also provide an optical curve, technical drawing or existing sample for engineering evaluation.

 Manufacturing Process

A typical production workflow includes:

Optical Glass Selection → Cutting → Grinding → Polishing → Cleaning → Multilayer Coating → Spectral Testing → Surface Inspection → Dimensional Inspection → Final QC → Protective Packaging

Production parameters can be adjusted according to the required optical and mechanical specifications.

 Quality Control

Quality inspection can include:

  • Passband transmission
  • Cut-off wavelength
  • Blocking performance
  • Spectral curve
  • Coating uniformity
  • Surface quality
  • Surface defects
  • Diameter / length / width
  • Thickness
  • Edge quality
  • Appearance

Final inspection criteria can be established according to the customer's technical requirements.

Packaging & Shipping

Each optical filter is individually protected to reduce the risk of:

  • Scratches
  • Dust
  • Surface contamination
  • Edge damage
  • Mechanical shock

Packaging is available for:

  • Samples
  • Small quantity orders
  • Bulk orders
  • OEM projects
  • International shipments

Custom labeling and OEM packaging are also available.

 FAQ

What is the pass band of this filter?

The specified pass band is400–670nm.

What wavelength does the filter block?

The filter is designed to block wavelengthsabove 670nm.

What type of filter is this?

It is aShort Pass Optical Filter, also commonly called aShortpass FilterorShort Wave Pass Filter.

What coating is used?

The filter uses aprecision multilayer optical coating.

Does the filter provide high transmission?

Yes. It is designed forhigh transmission within the specified pass band.

Is the surface precision polished?

Yes. The filter uses a high-precision polished optical surface.

Can the size be customized?

Yes. Custom sizes, shapes and thicknesses are available.

Can other wavelength ranges be produced?

Yes. Other shortpass wavelength ranges can be customized according to project requirements.

Is OEM production available?

Yes. OEM and customized optical filter production are supported.

What applications are suitable?

Typical applications includeoptical imaging, optical instruments, 

machine vision, spectral measurement, optical sensors and laboratory optical systems.

What information is needed for quotation?

Please provide:

Pass Band + Cut-Off Wavelength + Blocking 

Requirement + Size + Thickness + Quantity + Application