Midwest Optical Systems is a leader in machine vision filters and optical solutions. MidOpt filters are the premier solution for industrial imaging to ensure the very best image quality. Every filter is produced with the highest standards in durability, so they can withstand even the harshest environments. Some of the many industries MidOpt serves include: Machine Vision/Factory Automation, Security and Surveillance, License Plate Recognition/ITS, Medical and Life Science, Agricultural Inspection, Aerial Imaging, Motion Analysis, Photography and Cinematography.
**All Filter pricing varies by size, configuration, and quantity. These are customizable to shape, and can come mounted or unmounted. Please email us for a quote and/or recommendations for a filter to fit your needs.
Filters
BP324 Near UV Bandpass Filter
The Midwest Optical BP324 Near UV Bandpass filters have a broad spectral bandwidth in the UV while effectively blocking most visible and infrared light. Note that there is a slight deep red/near IR leak that peaks at about 720nm. Because this filter absorbs all unwanted visible and/or infrared light, it is not recommended for placement in front of intense (white) light sources
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP340 Near UV Bandpass Filter
The Midwest Optical BP340 Near UV Bandpass filter is a highly transmissive/high contrast alternative to more expensive thin film interference filters. The BP340 combines rugged dielectric coatings and absorptive filter glass for highly stable passband and excellent out-of-band blocking. BP340 is ideal for uses from UV Fluorescence to machine vision applications.
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP470 Blue Bandpass Filter
Prices vary by size, start at $70
The Midwest Optical BP470 filters 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.
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP505 Cyan Bandpass Filter
Prices vary by size, start at $70
The Midwest Optical BP505 filters are single substrate, hard-coated filters designed to match the output of most cyan LEDs. Coupled with the spectral sensitivity of most CCD/CMOS sensors in use today that also peak in this range, using this filter can result in images that are especially bright and very high in contrast.
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP525 Light Green Bandpass Filter
The Midwest Optical BP525 filter material is designed for use with green LED lighting, 532nm laser illumination and green UV fluorescence applications. A BP525 filter has a broader range, higher peak transmission and superior blocking of UV and NIR wavelengths compared to commonly found all-dichroic green bandpass filters.
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP550 NIR/UV Block-Visible Bandpass Filter
The Midwest OpticalBP550 filters effectively pass all visible light and block all light outside the visible range without “discoloring” the image. This single substrate, hard-coated filter is designed for use in full color, white light applications where either IR or UV light (or both) may be present.
Prices vary by size and quantity ordered. Email us for pricing or assistance finding the correct filter for your application.
BP590 Orange Bandpass Filter
The Midwest Optical BP590 filters are recommended for use in systems that make use of amber or orange LED lighting. These filters are also widely used in fluorescence imaging applications, particularly with dyes such as ethidium bromide, or when working with Qdot 565, 585 or 605.
BP635 Light Red Bandpass Filter
The Midwest Optical BP635 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.
BP660 Dark Red Bandpass Filter
The Midwest Optical BP660 filter is 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.
BP850 NIR Bandpass Filter
The Midwest Optical BP850 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. The BP850 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.
PR032 Linear Polarizer Filter
The Midwest Optical PR032 rotating linear polarizers offer maximum flexibility and ease of use. Rotating the mount and visually observing the results makes it easy to determine the position at which reduction of glare is maximized. Fixed, non-rotating mounts are also available.
PS007 Polarizer Film
The Midwest Optical PS007 High Contrast Linear Polarizer Film is .007" thick and achieves optimal glare reduction when placed over light source. Contrast ratios average up to 10,000:1. The PS007 can be custom laser cut to fit any light source with a maximum usable width of 16.5″ and length up to 300′.
Filter Kits
FK200 Machine Vision Filter Kit
The Midwest Optical FK200 comes with the ten most often recommended UV, VIS and NIR Machine Vision Filters. This compact test kit is an excellent resource for testing and evaluating image quality.
Included:
Ten most recommended UV, VIS and NIR Machine Vision Filters
27mm threaded mounts
Step-up and step-down rings to fit M25.5 and M30.5 lenses
Polarizing film for light source
Technical booklet with specs and application examples
Educational material to help in understanding filter use
Microfiber cleaning cloth
Compact, impact/static resistant case
Easy-to-track labeled filter slots
SU25.5-27 Step-Up Adapter
SD30.5-27 Step-Down Adapter
FS100 Machine Vision Swatch Filter Kit
The Midwest Optical portable FS100 makes it easy to solve applications on site, and includes the ten most often recommended UV, VIS and NIR Machine Vision Filters.
Included: Larger size 43mm diameter filters QR code linking to filter specifications Filter transmission curve
FK220 BN Series Filter Kit
The Midwest Optical FK220 BN Series filter kit features the innovative designs of the BP series kit with the addition of the BN740, BN810 and BN940—all in reduced bandwidth versions. Further wavelength separation is beneficial for use with LEDs and laser diodes; overwhelming ambient light conditions, such as outdoor applications; and fluorescence inspection. The BN Series is compatible with M25.5, M27 and M30.5 lens filter threads.
SK100 Filter Test Kit
The Midwest Optical SK100 includes 70 filters for UV, VIS and NIR imaging; making it the ultimate resource for testing and evaluating image quality. Filter categories included in the SK100: Bandpass; Dual Bandpass; Longpass; Neutral Density; Shortpass; Polarizing; Light Balancing; Protective and Acrylic.
Included:27mm threaded mount filters Step adapters to fit most M25.5 and M30.5 lenses Polarizing Film for light source Educational material on optical filters and technical specs for each filter Sturdy case for protective storage
FK100 Machine Vision Binder Filter Kit
Pricing varies by size, starts at $800
The Midwest Optical FK100 is an excellent starter kit for evaluating your system and image quality, and is available in any size filter M22.5- M105
Included:
Ten most recommended UV, VIS and NIR Machine Vision Filters
Step-up and step-down rings to fit M25.5 and M30.5 lenses*
Polarizing film for light source
Technical data and transmission curves for each filter
Educational material in durable binder to help in understanding filter use
NS100 Neutral Density Swatch Filter Kit
Pricing varies by size, starts at $500
The Midwest Optical portable NS100 makes it easy to solve applications on-site, and includes all MidOpt Visible Neutral Density Filters. See the effects of stacked ND filters to test various optical densities, Reduce light intensity in the visible spectrum without affecting color and contrast, and Test in both monochrome or color applications
IK100 NIR Machine Vision Filter Kit
Pricing varies by size, starts at $500
The Midwest Optical IK100 is an excellent starter kit when imaging in the NIR, is available in all threaded sizes: M25.5 – M105 and is designed to assist vision integrators and end users.
Included:
Six most often recommended NIR filters for Machine Vision
Step-up and step-down rings to fit M25.5 and M30.5 lenses*
NK100 Neutral Density Binder Filter Kit
Pricing varies by size, starts at $500
The Midwest Optical NK100 includes all Visible, Absorptive Neutral Density Filters and is available in all threaded mount sizes M22.5 – M105. This MidOpt Filter Kit allows you to: See the effects of stacked ND filters to test various optical densities, Reduce light intensity in the visible spectrum without affecting color and contrast, and Test in both monochrome or color applications