Shortpass & Notch Colour Filters

Shortpass filters transmit shorter visible wavelengths while blocking longer visible and infrared wavelengths.

These filters are used for contrast enhancement, colour separation, hot material imaging and specialised monochrome machine vision applications.

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Shortpass Colour Filters

Filter Models

Infrared blocking

Blocks longer visible and near-infrared wavelengths.

Colour separation

Improves separation of coloured subjects in monochrome imaging.

Hot material imaging

Reduces glare from hot metals, glass and industrial processes.

Machine vision optimisation

Supports specialised inspection and spectral imaging applications.

SP510 Blue Dichroic Shortpass Filter

Blocks green and red wavelengths while passing blue

SP510 filters block green and red wavelengths while passing blue and portions of the ultraviolet spectrum.

These filters are highly effective for separating brass or gold-plated objects from silver or chrome-plated components.

SP510 filters can also reduce the bright glow emitted by hot metals, glass and other high temperature materials.

Cameras with strong UV and deep-blue sensitivity can achieve particularly effective contrast enhancement using this filter.

sp510 transmission reference graphic
SP510 Shortpass Filter
Specification Details
Transmission Passes 350-500nm and 810nm+
Blocking Range Reflects 510-800nm
Features Blocks green and red wavelengths
Suitable For Sorting plated metals and imaging hot materials

SP570 Blue-Green Dichroic Shortpass Filter

Blocks orange to near-infrared wavelengths

SP570 filters remove red and near-infrared wavelengths while maintaining blue-green transmission.

These filters are commonly used for viewing hot metals, glass and other high temperature materials.

The single substrate Borofloat glass construction provides excellent thermal stability.

sp570 transmission reference graphic
SP570 Shortpass Filter
Specification Details
Transmission Passes 400-570nm
Blocking Range Reflects 580-1060nm
Features Blocks orange to near-infrared wavelengths
Suitable For Imaging hot metals and glass

SP585 Cyan Dichroic Shortpass Filter

Blocks red and very near-infrared wavelengths

SP585 filters separate blue and green wavelengths from red and near-infrared light.

These filters are commonly used for imaging hot, molten glass and metal applications.

For stronger infrared suppression beyond 875nm, additional IR blocking filters may be recommended.

sp585 transmission reference graphic
SP585 Shortpass Filter
Specification Details
Transmission Passes 370-580nm and 830nm+
Blocking Range Reflects 590-820nm
Features Separates blue-green wavelengths from red
Suitable For Hot molten glass and metal imaging

SP625 Blue-Green-Orange Dichroic Shortpass Filter

Blocks deep red and near-infrared wavelengths

SP625 filters block much of the red and near-infrared spectrum while transmitting blue, green and orange wavelengths.

These filters can shroud light emitted by dark red LEDs in complex machine vision inspection systems.

SP625 filters are also effective for imaging hot rolled steel, molten glass and other high temperature materials.

sp625 transmission reference graphic
SP625 Shortpass Filter
Specification Details
Transmission Passes 405-620nm
Blocking Range Reflects 630-1080nm
Features Blocks deep red and near-infrared wavelengths
Suitable For Hot material imaging and LED shrouding

NF550 Magenta Dichroic Notch Filter

Blocks green wavelengths while passing blue and red

NF550 notch filters block only green wavelengths while transmitting most other visible wavelengths.

These filters are commonly used for monochrome imaging where green objects must be separated from the background.

Green subjects appear darker while surrounding colours appear lighter, improving contrast and separation.

Although technically notch filters, they are commonly grouped with shortpass filter solutions.

nf550 transmission reference graphic
NF550 Notch Filter
Specification Details
Transmission Passes 320-465nm and 610nm+
Blocking Range Reflects 470-600nm
Features Blocks green wavelengths only
Suitable For Green object separation in monochrome imaging

Need help selecting shortpass or notch filters?

Talk to our machine vision engineers about spectral filtering, hot material imaging and contrast enhancement solutions.