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Optical filters for cameras and machine vision applications
Complete line of filters, single-substrate and with a high-hardness coating, specifically designed for industrial machine vision applications.
Filters for vision systems increase the contrast of the object being inspected, improving the system’s ability to distinguish the desired features.
Higher contrast allows greater inspection accuracy and a higher speed of the inspection system. The effect of ambient light, or of its variation over time, is minimised by the use of filters, thus creating the conditions for good long-term stability of the vision system’s operating conditions.
When combined with correct illumination, the optical filter is one of the most important factors in ensuring that any vision system can work reliably throughout its entire life cycle.
A wide range of filters is available, designed for quick and secure mounting on lenses and objectives for CCD and CMOS cameras.
I filtri proposti sono protetti da un rivestimento in grado di garantire una lunga durata anche in presenza di umidità, calore e vibrazioni. Inoltre sono stati progettati per sopportare anche ripetuti cicli di pulizia, anche con solventi lievemente aggressivi.
Filters are available both in standard sizes, which fit most lenses on the market, and in special sizes and with special characteristics.
Typical applications:
- Selection of a predetermined colour
- Suppression of a colour
- Suppression of ambient light
- Selection of light from infrared sources
- Polarisation 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 selecting wavelengths in the infrared range.
Used in all near-infrared applications to block visible wavelengths.
Typical applications are the elimination or attenuation of the unwanted effects of ambient light, or the analysis of particular features of objects that are highlighted by infrared illumination.
This series of filters is to be combined with the whole series of INF-type illuminators with an emission wavelength of 880 nm.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Example of use.
On the left, a monochrome image obtained with a white illuminator without a filter.
On the right, the same image illuminated with an infrared source and a BP880 filter, which highlights only the useful information
Example of use.
On the left, an image clearly affected by ambient light.
On the right, the same image obtained with infrared illumination and a BP880 filter, which eliminates the influence of ambient light.
Transmission curve of the 880 nm infrared filters.
The filter transmits all wavelengths around 880 nm and completely blocks the visible part
Available with standard M25.5 and M27 threads and with special threads up to M105.
Filters for red LED illuminators
Series of optical filters for selecting wavelengths around 625-635 nm.
Used in all applications where a red illuminator is used or where particular colour characteristics of an object illuminated with white light need to be selected. Typical applications are the elimination or attenuation of the unwanted effects of ambient light, or the analysis of particular features of objects that are highlighted by red illumination.
This series of filters is to be combined with the whole series of RED-type illuminators with an emission wavelength of 625 and 635 nm.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the 625-635 nm red filters.
The filter transmits all wavelengths around 625-635 nm and completely blocks the other wavelengths.
Example of use.
On the left, a monochrome image obtained with a white illuminator without a filter.
In the centre, the same image using a commercial photographic filter.
On the right, the same image illuminated with a red source and a BP635 filter, which highlights only the useful information relating to the product code.
Filters for green LED illuminators
Series of optical filters for selecting wavelengths around 525 nm.
Used in all applications where a green illuminator is used or where particular colour characteristics of an object illuminated with white light need to be selected. Typical applications are the elimination or attenuation of the unwanted effects of ambient light, or the analysis of particular features of objects that are highlighted by green illumination.
This series of filters is to be combined with the whole series of GRE-type illuminators with an emission wavelength of 525 nm.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the 525 nm filters.
The filter transmits all wavelengths around 525 nm and completely blocks the visible part
Available with standard M25.5 and M27 threads and with special threads up to M105.
Example of use.
The use of green filters combined with green LED illuminators provides high suppression of ambient light.
Example of use.
The use of green filters makes it possible to select particular object colours or to increase image contrast.
Filters for blue LED illuminators
Series of optical filters for selecting wavelengths around 470 nm.
Used in all applications where a blue illuminator is used or where particular colour characteristics of an object illuminated with white light need to be selected. Typical applications are the elimination or attenuation of the unwanted effects of ambient light, or the analysis of particular features of objects that are highlighted by blue illumination (fluorescence effect).
This series of filters is to be combined with the whole series of BLU-type illuminators with an emission wavelength of 470 nm.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the 470 nm filters.
The filter transmits all wavelengths around 470 nm and completely blocks the other wavelengths.
Example of use.
The use of blue filters makes it possible to increase the contrast of printed text and codes. Red source and BP635 filter, which highlights only the useful information relating to the product code.
Filters for ultraviolet LED illuminators
Series of optical filters for selecting wavelengths around 365 nm.
Used in all applications where an ultraviolet illuminator is used. Typical applications are the elimination or attenuation of the unwanted effects of ambient light, or the analysis of particular features of objects that are highlighted by blue illumination (fluorescence effect).
This series of filters is to be combined with the whole series of ULV-type illuminators with an emission wavelength of 365 nm.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the 365 nm filters.
The filter transmits all wavelengths around 365 nm and completely blocks the other wavelengths.
Example of use.
The use of ultraviolet illumination makes it possible to identify materials that are subject to fluorescence.
Polarising filters for visible LED illuminators
Series of polarising optical filters for visible light.
Typical applications are the elimination or attenuation of the unwanted effects caused by reflective or particularly shiny objects
The filter is mounted on a rotating ring so that it can be set correctly to the right polarisation angle.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the polarising filters.
The filter works across the entire visible spectrum.
Example of use.
The use of polarising filters makes it possible to eliminate the reflection effect of protective films.
Example of use of a polarising filter.
Infrared radiation blocking filters
Series of optical filters for blocking infrared radiation.
Used in all applications where a high level of unwanted infrared radiation is expected (objects at high temperature).
Typical applications are the elimination or attenuation of the unwanted effects caused by strong infrared emissions, often present in high- temperature applications.
Available with standard M25.5 and M27 threads and with special threads up to M105.
Transmission curve of the polarising filters.
The filter works across the entire visible spectrum.
Example of use.
The use of infrared radiation blocking filters makes it possible to observe phenomena that would otherwise not be observable because they would drive the camera into overexposure.
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