Photon Mission B.V.

Bijsterhuizen 2527
6604 LM Wijchen
The Netherlands

Bandpass filters

Bandpass filters

Wide range of filter options: we offer filters that cater to specific applications or industries, such as UV, IR, or visible light filters in many different application fields.

Bandpass Filters transmit a selective range of light while blocking light outside of the desired range and are characterized by their Center Wavelength (CWL) and Bandwidth which is specified by the Full Width at Half Maximum (FWHM). As Bandpass Filters are designed to transmit a range of light, the CWL indicates the wavelength and the center of the range. The FWHM is the 50% point at the cut-on slope and 50% point at the cut-off slope, with the distance in between being the designated bandwidth.

They are commonly used to isolate an illumination source such as LEDs, lasers or fluorescence to help eliminate the variability or overpowering effects of light outside of the application’s interest. They are also useful in creating contrast between colors in monochromatic applications and help increase resolution by eliminating chromatic aberrations.

Photon Mission offers Bandpass Filters ranging from the ultraviolet, visible, to infrared portions of the spectrum.

We offer over 60 different Bandpass filters, some of the most common are shown below, but if you require a different wavelength, please make sure to contact us.

Bandpass Filters transmit a selective range of light while blocking light outside of the desired range and are characterized by their Center Wavelength (CWL) and Bandwidth which is specified by the Full Width at Half Maximum (FWHM). As Bandpass Filters are designed to transmit a range of light, the CWL indicates the wavelength and the center of the range. The FWHM is the 50% point at the cut-on slope and 50% point at the cut-off slope, with the distance in between being the designated bandwidth.

They are commonly used to isolate an illumination source such as LEDs, lasers or fluorescence to help eliminate the variability or overpowering effects of light outside of the application’s interest. They are also useful in creating contrast between colors in monochromatic applications and help increase resolution by eliminating chromatic aberrations.

Photon Mission offers Bandpass Filters ranging from the ultraviolet, visible, to infrared portions of the spectrum.

We offer over 60 different Bandpass filters, some of the most common are shown below, but if you require a different wavelength, please make sure to contact us.

Need advice to find the optimal filter? I’m happy to help!

Ronald Jansen

+31 85 080 5944 - Option 2

ronald@photonmission.com

Bandpass Filters

  • Standard filters available
  • Customization to your application needs

Are you looking for a particular Bandpass filter that is not shown on this page? We offer over 60 different Bandpass filters. Contact us to find your specific filter!

BN940 Narrow Near-IR Bandpass Filter

  • threaded mount, c-mount and slip mount option
  • unmounted option and different sizes available

The BN940 Narrow Near-IR Bandpass filters feature a narrow band design with improved blocking of unwanted light and greater insensitivity to short shifting, making them particularly essential when 940nm lighting is used together with a short focal length camera lens. 940nm LEDs are commonly used in remote control devices and in security/surveillance lighting. 940nm illumination is often considered “covert,” as little if any faint red glow is produced from these LEDs, even in complete darkness. Unfortunately CMOS and CCD cameras have greatly reduced sensitivity at these wavelengths, and strong ambient light can often make imaging in this range very difficult. Useful Range : 928-955nm FWHM : 55nm Tolerance : +/- 7nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 940nm

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BP850 Near-IR Bandpass Filter

  • threaded mount, c-mount and slip mount option
  • unmounted option and different sizes available

The BP850 Near-IR Bandpass Filter is recommended when using high-power 830-850nm LED or laser diode lighting to improve contrast in surveillance applications or when inspecting in the infrared, this filter features high peak transmission and particularly durable, robust coatings. This filter’s coated surface also greatly inhibits staining due to year-round issues with heat, humidity, and/or air quality that affect uncoated infrared filters. Useful Range : 820-910nm FWHM : 160nm Tolerance : +/- 10nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 840nm, 850nm

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BP660 Dark Red Bandpass Filter

  • threaded mount, c-mount and slip mount option
  • unmounted option and different sizes available

The BP660 Dark Red Bandpass Filters are recommended for use with 650-680nm LED and laser diode lighting. Because of the ample passband and excellent in-band transmission, it works well with all camera-related applications in this range. Useful Range : 640-680nm FWHM : 60nm Tolerance : +/- 10nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 660nm

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BP635 Light Red Bandpass Filter

  • threaded mount, c-mount and slip mount option
  • unmounted option and different sizes available

A BP635 Light Red Bandpass Filter is recommended for use with 615-645nm LED and laser diode lighting. Because of its broad bandwidth and high peak transmission, BP635 filters work very well for all “light red” lighting applications in this range. Useful Range : 615-645nm FWHM : 60nm Tolerance : +/- 10nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 617nm, 625nm, 630nm

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BP470 Blue Bandpass Filter

  • threaded mount, c-mount and slip mount option
  • unmounted option and different sizes available

BP470 Blue Bandpass Filter enhance viewing of subjects illuminated by blue LED lighting and any UV- excited blue fluorescence emissions (430-500nm). Its broad bandwidth and high peak (T ≥90%) transmission results in significantly brighter, higher contrast images. For most machine vision UV fluorescence applications, use of a BP470 filter is absolutely necessary. The StablEdge design prevents unwanted interference from lighting employed for UV excitation (365-405nm) even when the filter is used in conjunction with short focal length, wide angle lenses. BP470 is also frequently used in 3D measurement applications. Useful Range : 425-495nm FWHM : 85nm Tolerance : +/- 10nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 450nm, 465nm, 470nm

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