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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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 FilterBlocks green and red wavelengths while passing blue |
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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.
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| Specification | Details |
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| 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 FilterBlocks orange to near-infrared wavelengths |
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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.
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| Specification | Details |
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| 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 FilterBlocks red and very near-infrared wavelengths |
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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.
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| Specification | Details |
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| 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 FilterBlocks deep red and near-infrared wavelengths |
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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.
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| Specification | Details |
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| 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 FilterBlocks green wavelengths while passing blue and red |
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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.
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| Specification | Details |
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| 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.
