For applications requiring the removal of the red and near infrared portions of the spectrum, the SP570 is the filter of choice. Note: transmission of blue light suffers somewhat.

Certain machine vision filters can also be used to block the bright glow of hot metals, glass and other material. Shortpass filters allow light up to a specific wavelength to pass through while blocking all light at higher wavelengths permitting, for example, the viewing of hot rolled steel to see certain temperature areas while not blinding the system from the brighter, hotter areas.

This filter's single substrate material is Borofloat, a heat-resistant glass similar to Pyrex.

Cyan dichroic single substrate filters separate the green and blue visible portions of the spectrum from the red. Certain applications benefit best from this type of filter, such as where there is an overwhelming amount of orange, red and near-IR light. Some examples are when hot, molten glass or metal must be imaged. However, infrared light beyond 875nm is not well blocked, so the use of an additional infrared-blocking filter, or the SP570 or SP625 shortpass filters, is often recommended.

Certain machine vision filters can also be used to block the bright glow of hot metals, glass and other material. Shortpass filters allow light up to a specific wavelength to pass through while blocking all light at higher wavelengths. This useful feature permits, for example, the viewing of hot rolled steel to see certain temperature areas while not blinding the system from the brighter, hotter areas.

The SP625 single substrate filter blocks much of the red and all of the near-IR portions of the spectrum, passing blue, green and orange light. This filter can be used to "shroud" light emitted by 660nm dark red LEDs in one portion of a machine vision inspection application, from a camera used with white or other lighting in another portion of the same system.

Certain machine vision filters can also be used to block the bright glow of hot metals, glass and other material. Shortpass filters allow light up to a specific wavelength to pass through while blocking all light at higher wavelengths. This useful feature permits, for example, the viewing of hot rolled steel to see certain temperature areas while not blinding the system from the brighter, hotter areas.

Magenta Dichroic Filters are technically not Shortpass Filters but are more commonly referred to as "Notch Filters". They block a certain wavelength range while passing all others; only green wavelengths are blocked while all other light is passed. The result is that objects take on a reddish-purple appearance when viewed in colour.

These filters, as all single substrate, hard-coated shortpass filters, are designed primarily for monochrome applications. For example, in those cases where green-coloured subjects are viewed against a different colour background, these filters can be very effective in separating the subject (which now appears darker) from the background (which now appears lighter).