Home x

    Optics

  • Optics >
  • Telecentric lenses
  • Macro & Fixed focal length lenses
  • 360° view lenses
  • Infrared & UV lenses
  • Custom lenses
  • Imaging lens selector
  • Lighting

  • Lighting >
  • LED Illuminators
  • LED Pattern projectors
  • Custom lights
  • Cameras

  • Cameras >
  • Area Scan Cameras
  • Line Scan cameras
  • Camera finder
  • Customized machine vision cameras
  • Software

  • Software >
  • Machine vision software
  • Machine vision libraries
  • Accessories

  • Accessories >
  • Optical filters for lenses
  • Windows, mirrors & beamsplitters
  • Diffusing & polarizing plates for lighting
  • Calibration & resolution patterns
  • Projection patterns
  • Mounting mechanics
  • LED controllers
  • LED sources & replacements
  • Lens controllers
  • Power supplies
  • Cables
  • Others
  • AI Vision Units

  • AI Vision Units >
  • PENSO®
  • Company

  • Company >
  • Optical imaging technologies
  • Opto Engineering® for the environment
  • Who we are
  • A history of innovation
  • Committed to quality
  • Joint ventures
  • Where we are
  • Legal
  • Awards
  • Corporate videos
  • Services

    Industries

    Basics

    Resources

    Support

    Careers

    Press Review

    Contact us

    EXE Training

  • en
    • Deutsch
    • Italiano
    • 中文
Company
Services
Industries
Basics
Resources
Support
Careers
Press Review
Contact us
EXE Training
Optics
Lighting
Cameras
Software
Accessories
AI Vision Units
kits logo
Optics finder Lighting finder Camera finder Imaging lens selector
Get the right product, right from the start
  • Home
  • Accessories
  • OPFI series

OPFI series

Filters for telecentric lenses and fixed focal length lenses

Opto Engineering® CATALOG

Overview
Models
Downloads
Related
Tech info
Resources

Light filtering is a typical need in machine vision applications. Together with LED illuminators, filters can improve image contrast by blocking unwanted light and increase the accuracy and repeatability of the vision system.

Ambient light is very frequently causing errors in imaging systems due to unwanted reflections off the surface of the parts being measured. In these cases, a band pass or long pass filter that matches the emission wavelength of the illuminator is usually integrated in front of the imaging lens: this way, only the light coming from the illuminator is collected while the rest of the spectrum is cut out.

Furthermore, many machine vision applications require monochrome illumination in order to enhance or suppress particular object features: under these conditions, only the features with a certain color are imaged and inspected.

KEY ADVANTAGES

  • High and precise transmission
  • Wide range selection
  • Available for fixed focal length lenses and telecentric lenses
  • Increase resolution
  • Block unwanted light
  • Tolerate high temperature environment
Telecentric lens filters
Filters for fixed focal length lens

Filters for fixed focal length lens

Putting a filter in front of a telecentric lens can be very inconvenient when the size of the lens is very big. The filter should be as large as the front element of the lens, thus becoming very expensive.

To overcome size and cost issues, Opto Engineering® designed a smart filter adaptor that can be easily plugged into the rear part of the lenses. This simple and cost-effective accessory is compatible with all TC12yyy and TC23yyy bi-telecentric lenses and with the C-mount versions of TC4M and TC2M series bi-telecentric lenses.

The bi-telecentricity of the Opto Engineering® lenses makes this solution very efficient, since the rays remain parallel when passing through the filter. This allows for the optical bandpass to be maintained across the entire image surface.

Since inserting the filter will increase the back focal length of the lens, spacers (included in the TC lens package) must be added to the C-mount in order to set the lens back to its nominal working distance; the overall thickness of the spacers is usually equal to 1/3 of the filter thickness.

The supported filter diameter is 17.50 mm and the maximum recommended filter thickness is 4.00 mm.

Main optical specifications Mechanical specifications
Part
number
Type Light
color
Wavelength
range
Cut-on
50%
transmittance
Cut-off
50%
transmittance
Spectral
FWHM
Filter
thread
Outer
diameter
Clear
aperture
(nm) (nm) (nm) (nm) (mm) (mm)
1 1 1
FTBP470C25.4 band pass blue 410 - 500 - - 90 C-mount 25.4 19.5 Quote
FTBP525C25.4 band pass green 500 - 550 - - 50 C-mount 25.4 19.5 Quote
FTBP635C25.4 band pass red 595 - 675 - - 80 C-mount 25.4 19.5 Quote
FTBP660C25.4 band pass dark red 640 - 695 - - 55 C-mount 25.4 19.5 Quote
FTBP850C25.4 band pass IR 800 - 880 - - 80 C-mount 25.4 19.5 Quote
FTSP450C25.4 short pass dark blue 370 - 440 - 440 - C-mount 25.4 19.5 Quote
FTSP500C25.4 short pass blue 365 - 495 - 495 - C-mount 25.4 19.5 Quote
FTSP570C25.4 short pass cyan 330 - 575 - 575 - C-mount 25.4 19.5 Quote
FTSP700C25.4 UV+NIR cut off VIS 400 - 700 400 700 - C-mount 25.4 19.5 Quote
FTLP510C25.4 long pass yellow 515 - 1100 515 - - C-mount 25.4 19.5 Quote
FTLP550C25.4 long pass orange 555 - 1100 555 - - C-mount 25.4 19.5 Quote
FTLP590C25.4 long pass red 595 - 1100 595 - - C-mount 25.4 19.5 Quote
FTLP640C25.4 long pass dark red 640 - 1100 640 - - C-mount 25.4 19.5 Quote
FTBP470M27 band pass blue 410 - 500 - - 90 M27 x 0.5 30 22.5 Quote
FTBP525M27 band pass green 500 - 550 - - 50 M27 x 0.5 30 22.5 Quote
FTBP635M27 band pass red 595 - 675 - - 80 M27 x 0.5 30 22.5 Quote
FTBP660M27 band pass dark red 640 - 695 - - 55 M27 x 0.5 30 22.5 Quote
FTBP850M27 band pass IR 800 - 880 - - 80 M27 x 0.5 30 22.5 Quote
FTSP450M27 short pass dark blue 370 - 440 - 440 - M27 x 0.5 30 22.5 Quote
FTSP500M27 short pass blue 365 - 495 - 495 - M27 x 0.5 30 22.5 Quote
FTSP570M27 short pass cyan 330 - 575 - 575 - M27 x 0.5 30 22.5 Quote
FTSP700M27 UV+NIR cut off VIS 400 - 700 400 700 - M27 x 0.5 30 22.5 Quote
FTLP510M27 long pass yellow 515 - 1100 515 - - M27 x 0.5 30 22.5 Quote
FTLP550M27 long pass orange 555 - 1100 555 - - M27 x 0.5 30 22.5 Quote
FTLP590M27 long pass red 595 - 1100 595 - - M27 x 0.5 30 22.5 Quote
FTLP640M27 long pass dark red 640 - 1100 640 - - M27 x 0.5 30 22.5 Quote
FTBP470M30.5 band pass blue 410 - 500 - - 90 M30.5 x 0.5 33.5 25.5 Quote
FTBP525M30.5 band pass green 500 - 550 - - 50 M30.5 x 0.5 33.5 25.5 Quote
FTBP635M30.5 band pass red 595 - 675 - - 80 M30.5 x 0.5 33.5 25.5 Quote
FTBP660M30.5 band pass dark red 640 - 695 - - 55 M30.5 x 0.5 33.5 25.5 Quote
FTBP850M30.5 band pass IR 800 - 880 - - 80 M30.5 x 0.5 33.5 25.5 Quote
FTSP450M30.5 short pass dark blue 370 - 440 - 440 - M30.5 x 0.5 33.5 25.5 Quote
FTSP500M30.5 short pass blue 365 - 495 - 495 - M30.5 x 0.5 33.5 25.5 Quote
FTSP570M30.5 short pass cyan 330 - 575 - 575 - M30.5 x 0.5 33.5 25.5 Quote
FTSP700M30.5 UV+NIR cut off VIS 400 - 700 400 700 - M30.5 x 0.5 33.5 25.5 Quote
FTLP510M30.5 long pass yellow 515 - 1100 515 - - M30.5 x 0.5 33.5 25.5 Quote
FTLP550M30.5 long pass orange 555 - 1100 555 - - M30.5 x 0.5 33.5 25.5 Quote
FTLP590M30.5 long pass red 595 - 1100 595 - - M30.5 x 0.5 33.5 25.5 Quote
FTLP640M30.5 long pass dark red 640 - 1100 640 - - M30.5 x 0.5 33.5 25.5 Quote
FTBP470M35.5 band pass blue 410 - 500 - - 90 M35.5 x 0.5 38.5 30.5 Quote
FTBP525M35.5 band pass green 500 - 550 - - 50 M35.5 x 0.5 38.5 30.5 Quote
FTBP635M35.5 band pass red 595 - 675 - - 80 M35.5 x 0.5 38.5 30.5 Quote
FTBP660M35.5 band pass dark red 640 - 695 - - 55 M35.5 x 0.5 38.5 30.5 Quote
FTBP850M35.5 band pass IR 800 - 880 - - 80 M35.5 x 0.5 38.5 30.5 Quote
FTSP450M35.5 short pass dark blue 370 - 440 - 440 - M35.5 x 0.5 38.5 30.5 Quote
FTSP500M35.5 short pass blue 365 - 495 - 495 - M35.5 x 0.5 38.5 30.5 Quote
FTSP570M35.5 short pass cyan 330 - 575 - 575 - M35.5 x 0.5 38.5 30.5 Quote
FTSP700M35.5 UV+NIR cut off VIS 400 - 700 400 700 - M35.5 x 0.5 38.5 30.5 Quote
FTLP510M35.5 long pass yellow 515 - 1100 515 - - M35.5 x 0.5 38.5 30.5 Quote
FTLP550M35.5 long pass orange 555 - 1100 555 - - M35.5 x 0.5 38.5 30.5 Quote
FTLP590M35.5 long pass red 595 - 1100 595 - - M35.5 x 0.5 38.5 30.5 Quote
FTLP640M35.5 long pass dark red 640 - 1100 640 - - M35.5 x 0.5 38.5 30.5 Quote
FTBP470M43 band pass blue 410 - 500 - - 90 M43 x 0.75 46 38 Quote
FTBP525M43 band pass green 500 - 550 - - 50 M43 x 0.75 46 38 Quote
FTBP635M43 band pass red 595 - 675 - - 80 M43 x 0.75 46 38 Quote
FTBP660M43 band pass dark red 640 - 695 - - 55 M43 x 0.75 46 38 Quote
FTBP850M43 band pass IR 800 - 880 - - 80 M43 x 0.75 46 38 Quote
FTSP450M43 short pass dark blue 370 - 440 - 440 - M43 x 0.75 46 38 Quote
FTSP500M43 short pass blue 365 - 495 - 495 - M43 x 0.75 46 38 Quote
FTSP570M43 short pass cyan 330 - 575 - 575 - M43 x 0.75 46 38 Quote
FTSP700M43 UV+NIR cut off VIS 400 - 700 400 700 - M43 x 0.75 46 38 Quote
FTLP510M43 long pass yellow 515 - 1100 515 - - M43 x 0.75 46 38 Quote
FTLP550M43 long pass orange 555 - 1100 555 - - M43 x 0.75 46 38 Quote
FTLP590M43 long pass red 595 - 1100 595 - - M43 x 0.75 46 38 Quote
FTLP640M43 long pass dark red 640 - 1100 640 - - M43 x 0.75 46 38 Quote
FTBP470M52 band pass blue 410 - 500 - - 90 M52 x 0.75 55 47 Quote
FTBP525M52 band pass green 500 - 550 - - 50 M52 x 0.75 55 47 Quote
FTBP635M52 band pass red 595 - 675 - - 80 M52 x 0.75 55 47 Quote
FTBP660M52 band pass dark red 640 - 695 - - 55 M52 x 0.75 55 47 Quote
FTBP850M52 band pass IR 800 - 880 - - 80 M52 x 0.75 55 47 Quote
FTSP450M52 short pass dark blue 370 - 440 - 440 - M52 x 0.75 55 47 Quote
FTSP500M52 short pass blue 365 - 495 - 495 - M52 x 0.75 55 47 Quote
FTSP570M52 short pass cyan 330 - 575 - 575 - M52 x 0.75 55 47 Quote
FTSP700M52 UV+NIR cut off VIS 400 - 700 400 700 - M52 x 0.75 55 47 Quote
FTLP510M52 long pass yellow 515 - 1100 515 - - M52 x 0.75 55 47 Quote
FTLP550M52 long pass orange 555 - 1100 555 - - M52 x 0.75 55 47 Quote
FTLP590M52 long pass red 595 - 1100 595 - - M52 x 0.75 55 47 Quote
FTLP640M52 long pass dark red 640 - 1100 640 - - M52 x 0.75 55 47 Quote
FTBP470TC band pass blue 410 - 500 - - 90 TC insert 24.5 15 Quote
FTBP525TC band pass green 500 - 550 - - 50 TC insert 24.5 15 Quote
FTBP635TC band pass red 595 - 675 - - 80 TC insert 24.5 15 Quote
FTBP660TC band pass dark red 640 - 695 - - 55 TC insert 24.5 15 Quote
FTBP850TC band pass IR 800 - 880 - - 80 TC insert 24.5 15 Quote
FTBP880TC band pass IR 835 - 975 - - 140 TC insert 24.5 15 Quote
FTSP450TC short pass dark blue 370 - 440 - 440 - TC insert 24.5 15 Quote
FTSP500TC short pass blue 365 - 495 - 495 - TC insert 24.5 15 Quote
FTSP570TC short pass cyan 330 - 575 - 575 - TC insert 24.5 15 Quote
FTSP700TC UV+NIR cut off VIS 400 - 700 400 700 - TC insert 24.5 15 Quote
FTLP510TC long pass yellow 515 - 1100 515 - - TC insert 24.5 15 Quote
FTLP550TC long pass orange 555 - 1100 555 - - TC insert 24.5 15 Quote
FTLP590TC long pass red 595 - 1100 595 - - TC insert 24.5 15 Quote
FTLP640TC long pass dark red 640 - 1100 640 - - TC insert 24.5 15 Quote
FTLP920TC long pass NIR 920 - 2300 920 - - TC insert 24.5 15 Quote
FTPR032TC linear polarizing VIS - - - - TC insert 24.5 15 Quote
Last update 07 Jun 2022

Notes

  1. Tolerance +/- 10 nm

Technical documents

Product user guide
pdf
spinner

If you are looking for a matching lens, refer to our wide range of optical solution

Fixed focal megapixel lens, EN2MP series

EN2MP series

Cost-effective 2 Megapixel fixed focal length lenses for sensors up to 2/3”
Fixed focal 5 megapixel lens, EN5MP series

EN5MP series

Cost-effective 5 Megapixel fixed focal length lenses for sensors up to 2/3”
TC telecentric lens for matrix detectors

TC series

Bi-telecentric lenses for sensors up to 2/3”

Lighting is crucial to get the best image quality

Advanced lighting solutions

LED Illuminators

Advanced lighting solutions.
LED patterns projectors

LED Pattern projectors

Advanced structured lighting.

And since software is just as important as the hardware

Machine vision software and libraries

FabImage® Studio Professional

Software for Machine Vision Engineers
Windows OS desktop application for optical measurement

Horus

Windows OS desktop application for optical measurement

Some related accessories you might be interested in

CMBS beam splitter

CMBS series

45° beam splitters
CMMR 080-096 mirror

CMMR series

45° first surface mirrors
A WI window and CMWF holder

WI series

Protective windows for lenses

Video gallery

Find more videos on our Vimeo channel

Application examples

Company & Resources
Optical imaging technologies Opto Engineering® for the environment Who we are A history of innovation Committed to quality Joint ventures Where we are Legal Awards Corporate videos 2D and 3D models Image gallery Video gallery Search OE products by applications Application notes Basics Frequently asked questions Press Review Jobs at Opto Engineering®
  • Opto Engineering Copyright © 2015 - 2022 - VAT IT02011230204
  • Fiscal code and registration number at Mantova Business Register 02011230204, Nr. REA: MN-216669, Share Capital: 200.000,00 €
  • All rights reserved - Terms of use - Use of cookies & privacy policy
  • Design & development by Opto Engineering® → SEO and consulting by Dipiemme Studio

Follow us


WE ARE CERTIFIED

  • TuvRheinald Certified
  • This website is hosted Green - checked by thegreenwebfoundation.org
  • ENWHP Rete Lombardia

ASSOCIATIONS WE SUPPORT

  • ANIE Automazione
  • Vision Markets - Machine Vision business consulting
  • Member of EMVA - European Machine Vision Association