Optical filters for cameras

Complete line of filters, single substrate and with high hardness coating, specially created for industrial machine vision applications.

Filters for vision systems increase the contrast of the object under control, improving the system's ability to distinguish the desired characteristics.

A higher contrast allows a higher inspection precision and higher speed of the inspection system. The effect of the presence of ambient light, or of its possible variation over time, is minimized with the use of filters, thus creating the conditions for a good stability of the operating conditions of the vision system in the long run.

When combined with correct lighting, the optical filter is one of the most important factors to ensure the ability of any vision system to work reliably throughout its life cycle.

A wide range of filters are available, designed for quick and safe mounting on lenses and lenses for CCD and CMOS cameras.

The proposed filters are protected by a coating capable of guaranteeing a long life even in the presence of humidity, heat and vibrations. They have also been designed to withstand repeated cleaning cycles, even with slightly aggressive solvents.

Filters are available both in standard sizes, which can be installed on most lenses on the market, and in special sizes and features.

Typical applications:

  • Selection of predetermined color
  • Suppression of a color
  • Ambient light suppression
  • Selection of light from infrared sources
  • Polarization of light
  • Selection of light from UV sources
  • Reduction of light from unwanted light sources

Filters for infrared LED illuminators

Series of optical filters for the selection of infrared wavelengths.

Used for all near infrared applications to block visible wavelengths.

Typical applications are the elimination or attenuation of unwanted effects of ambient light or the analysis of particular characteristics of objects that are highlighted by infrared lighting.

This series of filters are to be combined with the INF series of illuminators with an emission wavelength of 880 nm.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Example of use.
On the left monochrome image obtained with white illuminator without filter.
On the right the same image illuminated with infrared source and BP880 filter which highlights only useful information

Example of use.
Left image with evident influence of ambient light.
On the right the same image obtained with infrared illumination and BP880 filter which eliminates the influence of ambient light.

Transmission curve of infrared filters 880 nm.

The filter lets all wavelengths pass around 880 nm and completely blocks the visible part

Available with standard thread M25.5 and M27 and with special threads up to M105.

Filters for red LED illuminators

Series of optical filters for the selection of wavelengths around 625-635 nm.

Used for all applications where there is a red illuminator or it is necessary to select particular color characteristics of an object illuminated with white light. Typical applications are the elimination or attenuation of unwanted effects of ambient light or the analysis of particular characteristics of objects which are highlighted by red lighting.

This series of filters are to be combined with the RED series of illuminators with emission wavelength of 625 and 635 nm.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of the red filters 625-635 nm.

The filter passes all wavelengths around 625-635 nm and completely blocks the other wavelengths.

Example of use.

On the left monochrome image obtained with white illuminator without filter.

In the center the same image using a commercial photographic filter.

On the right the same image illuminated with red source and BP635 filter which highlights only the useful information relating to the product code.

Filters for green LED illuminators

Series of optical filters for the selection of wavelengths around 525 nm.

Used for all applications where there is a green illuminator or it is necessary to select particular color characteristics of an object illuminated with white light. Typical applications are the elimination or attenuation of unwanted effects of ambient light or the analysis of particular characteristics of objects that are highlighted by green colored lighting.

This series of filters are to be combined with the series of GRE type illuminators with an emission wavelength of 525 nm.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of infrared filters 525 nm.

The filter lets all wavelengths pass around 525 nm and completely blocks the visible part

Available with standard thread M25.5 and M27 and with special threads up to M105.

Example of use.

The use of green filters combined with green LED illuminators allows a high suppression of ambient light.

Example of use.

The use of green filters allows you to select particular object colors or increase the contrast of the image.

Filters for blue LED illuminators

Series of optical filters for the selection of wavelengths around 470 nm.

Used for all applications where there is a blue illuminator or it is necessary to select particular color characteristics of an object illuminated with white light. Typical applications are the elimination or attenuation of unwanted effects of ambient light or the analysis of particular characteristics of objects that are highlighted by blue colored lighting (fluorescence effect).

This series of filters are to be combined with the BLUE type of illuminators with an emission wavelength of 470 nm.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of the red filters 470 nm.

The filter lets all wavelengths pass around 470 nm and completely blocks the other wavelengths.

Example of use.

The use of blue filters allows to increase the contrast of written and printed codes. red source and filter BP635 which highlights only the useful information relating to the product code.

Filters for ultraviolet LED illuminators

Series of optical filters for the selection of wavelengths around 365 nm.

Used for all applications where an ultraviolet illuminator is provided. Typical applications are the elimination or attenuation of unwanted effects of ambient light or the analysis of particular characteristics of objects that are highlighted by blue colored lighting (fluorescence effect).

This series of filters are to be combined with the series of ULV type illuminators with an emission wavelength of 365 nm.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of infrared filters 365 nm.

The filter lets all wavelengths pass around 365 nm and completely blocks the other wavelengths.

Example of use.

The use of ultraviolet illumination allows you to identify materials that are subject to fluorescence.

Polarizing filters for visible LED illuminators

Series of polarizing optical filters for visible light.

Typical applications are the elimination or attenuation of unwanted effects caused by reflective or particularly shiny objects

The filter is mounted on a rotating ring nut in order to correctly position the filter on the correct polarization angle.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of polarizing filters.

The filter works across the visible spectrum.

Example of use.

The use of polarizing filters eliminates the reflective effect of protective films.

Example of use of polarizing filter.

Filters for blocking infrared radiation

Series of optical filters for blocking infrared radiation.

Used for all applications where there is a high presence of unwanted infrared radiation (high temperature objects).

Typical applications are the elimination or attenuation of unwanted effects caused by strong infrared emissions, often present in high temperature applications.

Available with standard thread M25.5 and M27 and with special threads up to M105.

Transmission curve of polarizing filters.

The filter works across the visible spectrum.

Example of use.

The use of filters to block infrared radiation allows you to observe phenomena that would otherwise be unobservable because they would lead the camera to overexposure.