The BP250 Near-UV Bandpass Filter for Machine Vision is a very broadband UV filter, mainly intended for deep-UV imaging. It is the only MidOpt UV filter available that offers excellent visible and near-IR blocking (≤0.1% abs. ≥400nm; ≤0.06% abs. ≥415nm), thus making it best suited to distinguish features or characteristics that are only visible under UV illumination.

Offered in a limited number of sizes, and not intended for use with standard CCD/CMOS cameras that do not image deep into the UV spectrum.

Useful in UV imaging applications, BP324 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.

BP340 UV Bandpass filters are an economical yet highly transmissive/high contrast alternative to far more costly thin film interference filters. This design combines rugged dielectric coatings and absorptive filter glass to ensure a highly stable passband and excellent out-of-band blocking, even when used in conjunction with very short focal length lenses. It also makes it possible to supply larger custom shapes and sizes – up to 165mm square – within a matter of days. BP340 finds use in UV fluorescence, forensic, scientific, multispectral, machine vision, sensing and other imaging applications.

BP365 UV Bandpass dichroic filters can be used with all UV LED, UV fluorescent and other UV-producing lamp-based lighting. BP365  filter material is designed to block the visible and pass UV light, including 395nm and all other popular UV LED wavelengths.  It is also useful for near-UV fluorescence imaging, blocking visible light and light from UVC LED excitation sources, allowing early removal of biofilms (for instance, in disinfection applications or biofouling of ship hulls) through tryptophan fluorescence detection. The substrate material is low-expansion Borofloat, making this filter particularly heat resistant.

BP450 filters enhance viewing of subjects illuminated by a 450nm blue LED or laser light source and any UV- excited blue fluorescence emissions (420-470nm). Its broad bandwidth and high peak (T ≥90%) transmission results in significantly brighter, higher contrast images. 

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. 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.

BP485 is commonly used as an internal infrared blocking filter in cameras. When working with any camera that has had its internal filter removed, a mounted BP485 filter can also be considered in order to, when desired, allow it to once again work like the unmodified camera. BP485 is A/R coated on both sides and its spectral response in the blue portion of the spectrum is excellent compared to other absorptive IR blocking filters.

MidOpt BP505 Cyan Blue Bandpass Filters for Machine Vision 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. It is particularly useful for line scan/wide angle applications.

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 —– improving contrast by blocking significantly more of the unwanted light. Because of its filter glass substrate, it is also less sensitive to changes in angle of incidence.

When using the PE530 with a monochrome (black-and-white) camera or other sensors, together with a broadband light source (such as the sun), the resulting spectral response replicates in the same proportions what the human eye will see, closely matching the CIE 1931 photopic luminosity curve. This is highly useful in applications requiring accurate lux, lumen or cd/m2 readings. Photopic response filters are also used in conjunction with ambient light detectors, for example photoelectric sensors used to control when infrared LED lighting is brought into use in day-night imaging applications. They are also used in automatic control of display backlight brightness and ambient light sensors used in mobile phones to appropriately dim or brighten a device’s screen.

BP550 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.

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.

A 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.

MidOpt® 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.

It is best to double check the wavelength of red lighting used in your application before ordering.

Recommended for use with near-infrared LEDs. BP695 is also useful for imaging typically weak luminescence where the subject is often excited with 635nm or 660nm red LED lighting.

Recommended for use with near-infrared LEDs, BP735 filters are designed for viewing subjects in the 700-770nm range. Blocks all UV and visible light, optimizing results achieved with IR lighting used in traffic control and license plate recognition systems.

The BP800 Near-IR Bandpass Filter for Machine Vision is recommended for use with broadband (typically filtered) near infrared lighting, this single substrate, anti-reflection coated filter is a very broad absorptive filter. Among all absorptive filter glasses, it is unique in its ability to retain its opacity at thicknesses of 1mm and below.

BP810 filters are designed for use in 800-830nm laser diode applications. They are insensitive to “blue shifting” experienced when using line or pattern generating lasers together with wide angle lenses. About 70% of cold therapy lasers used for the regeneration of damaged tissue that are out on the market operate at or near 810nm. Mounting this filter on a camera lens used in bright sunlight will better allow the laser beam to be imaged. However for a majority of 810nm applications, we normally recommend our BN810 filter option.

BP845 bandpass filters are designed to provide excellent transmission at 850nm while blocking visible and lower near-IR wavelength transmission. At the same time, it will block longer wavelength near-IR light – particularly at 940nm. In covert or other near-IR applications where more than one near-IR light source is desired (typically 850nm and 940nm would be two common choices), BP845 can be used with cameras and lighting designed to capture 850nm images and will block unwanted/interfering 940nm illumination.

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.

Recommended when using high-power 860-880nm infrared LED lighting or 905-920nm laser diodes, this filter also features high peak transmission and rugged coatings that provide added environmental stability.

BN450 is commonly used in fluorescence applications with an emission ranging from (430-460nm), it is suitable for use in LED or laser diode applications with higher than normal ambient lighting conditions and is less sensitive to angle of incidence variations than traditional interference filters. The BN450 is an ideal filter for applications utilizing 450nm blue laser triangulation sensors.

BN450 is commonly used in fluorescence applications with an emission ranging from (430-460nm), it is suitable for use in LED or laser diode applications with higher than normal ambient lighting conditions and is less sensitive to angle of incidence variations than traditional interference filters. The BN450 is an ideal filter for applications utilizing 450nm blue laser triangulation sensors.

Commonly used in fluorescence applications, a BN532 filter is suitable for use with lasers and laser diodes and is less sensitive to angle of incidence variations than traditional interference filters.

Commonly used in fluorescence applications, BN595 filters are suitable for use with laser diode and LED illumination when strong ambient lighting is a problem.

Commonly used in outdoor applications where strong sunlight is often a problem, a BN630 filter is suitable for use with LED and laser diode illumination. It exhibits less effect from blue shifting in wide angle applications.

Commonly used in outside applications bothered by intense sunlight, BN660 filters are suitable for use with 660-670nm laser diodes and LED lighting, and are less sensitive to angle of incidence variations than traditional interference filters.

BN650 Narrow Red Bandpass filters are useful in applications where intense sunlight or other interfering ambient light is present. BN650 filters are compatible with 650nm laser diodes and LEDs, commonly used in laser pointer and line generators. Compared to traditional interference filters, these filters are less susceptible to short shifting due to angle of incidence variations.

One of the commonly used IR illumination wavelengths, BN740 filters are suitable for laser diode and LED applications. The narrow band design is ideal when there are overwhelming ambient light conditions. Commonly used in security, traffic control and industrial inspection applications.

For use with 780-785nm IR illumination wavelengths, including LED and laser diode lighting, the narrow band design is ideal for use when ambient light conditions can be overwhelming. Commonly used in traffic control, security and license plate recognition applications.

A BN810 filter is designed for 810nm laser diode illumination. The narrow band design is ideal when there are overpowering ambient light conditions. It is used in security, traffic control and Industrial Inspection applications.

These filters are available for use in conjunction with commonly used IR illuminators operating at or around the 850nm wavelength. BN850 filters feature a narrow band design that is ideal for use when ambient light conditions create poor contrast. They are commonly used in security, traffic control, LPR and industrial inspection applications.

Bi615 Amber narrowband interference filters is often used in conjunction with 615nm LED and other similar illumination. It can also be used to image fluorescence emissions such as with some AlphaLISA immunoassays and some lanthanide elements in glass. One particularly popular fluorophore that emits at 615nm is Texas Red, which is commonly used in molecular biology techniques like quantitative RT-PCR and cellular assays. Bi615 can also find use in certain aerial and land-based surveying applications when monitoring plant health.

DB395/870 Dual Bandpass Filter passes UV-Violet and infrared wavelengths, effectively blocking all green and red light. These filters have traditionally found use in NDVI-type imaging applications. When using a single camera modified for aerial agricultural surveillance, incorporation of these so-called “Superblue” or “Infrablue” filters allows reflected near-infrared light (745-970nm) to be captured in the camera sensor’s red channel and reflected violet light (375-425nm) to be captured in the sensor’s blue channel (the green channel is not used). Even when using an inexpensive consumer camera (that has first had its IR blocking filter removed), this easy separation then makes it possible to post-process the red and blue channels for NDVI by performing the calculation: NDVI = (red – blue) / (red + blue). Healthy vegetation will absorb (not reflect) blue light and strongly reflect near-infrared light. While “Superblue” filters similar to DB395/870 have seen much use during recent years, for far better wavelength separation and contrast we strongly recommend the use of our newer DB475/850 or DB660/850 dualband filters instead.

The DB550/850 compliments the DB660/850 and DB475/850 filters. When modifying a single color camera by removing its IR blocking filter, incorporation of this filter in its place allows reflected near-infrared light (850nm) to be captured in the camera sensor’s red channel and reflected green light (550nm) to be captured in the sensor’s green channel (the blue channel is not used). Healthy vegetation will absorb (not reflect) green light and strongly reflect near-infrared light. Thus this information can then be used to apply a false color gradient to images to better highlight the contrast between regions of healthy vegetation vs. areas with stressed, diseased or no vegetation.

TB475/550/850 Triple Bandpass Blue+Green+850nm NIR Filter, when mounted in converted consumer cameras used in aerial surveying applications, can help provide a more affordable, lightweight alternative vs. systems employing three or more cameras or sensors. Blue-Green-Near IR Extended Normalized Difference Vegetation Index (ENDVI) data gathered for vegetative health monitoring can be used to provide similar, but spectrally different information as compared to traditional NDVI data. Soil background, differing atmospheric conditions and various types of vegetation can all influence the reflection of visible light somewhat differently. ENDVI analysis may, at times, be able to impart more accurate or reliable information regarding plant or crop health by additional leveraging of information in the blue portion of the spectrum. The formula used is:

MidOpt triple bandpass filters are primarily designed for aerial agriculture mapping and surveying purposes. Green-Red-Near IR data is used for applications where Chlorophyll Vegetation Index (CVI) and other vegetative index monitoring is preferred. TB550/660/850 filters, when mounted in converted consumer cameras, can help in achieving a more affordable, lightweight alternative to systems using three or more cameras or sensors. Some of the formulas that are employed in these cases include:

LP170 fused silica protective windows are made from an ultra-pure, synthetic optical material similar to fused quartz. They offer extremely low thermal expansion, high-resistance to shock, superior scratch resistance and excellent optical properties. They perform well in high-temperature applications, having the ability to withstand temperatures of up to 1100° C. They are also chemical resistant and have superior transmission in the UV through near infrared spectral ranges.

LP171 fused silica protective windows are made from an ultra-pure, synthetic optical material similar to fused quartz. They offer extremely low thermal expansion, high-resistance to shock, superior scratch resistance and excellent optical properties. They perform well in high-temperature applications, having the ability to withstand temperatures of up to 1100° C. They are also chemical resistant and have superior transmission in the UV through near infrared spectral ranges. LP171 includes a durable broadband multi-layer anti-reflection coating to limit reflection losses in the visible and near-infrared spectrums.

The LP190 Sapphire Protective Window is stronger than standard glass windows. It has a highly-durable surface to withstand harsh environments and is resistant to high impact, chemicals and alkalis. The LP190 Sapphire transmits wavelengths ranging from UV, VIS and short-wave infrared (SWIR).

Low scatter/absorption combined with excellent strength; thermal, mechanical and solar properties similar to Pyrex make LP285 filters an excellent protective window for imaging applications between 385-1100nm.

LP286 windows are made with high-impact, thermal-resistant Borofloat®, which is transparent in the near-UV, visible, and near-infrared ranges. It has a very low coefficient of thermal expansion and high shock resistance, withstanding temperatures up to 450° C for extended periods of time. Borofloat® is resistant to staining and harsh chemicals such as acids or alkalis, making it the protective window of choice when an economical window is needed for use in a harsh, high temperature environment. MidOpt LP286 windows have a rugged multi-layer, broadband anti-reflection coating to limit reflection loss in the visible and near-infrared spectrums. These windows are also available with an oleophobic (anti-smudge) coating to resist oils and moisture build-up, allowing for much easier cleaning.

LP330 Protective Windows are the lowest cost alternative when it comes to dust covers or protection of optical components. No anti-reflection coatings are provided, however parallelism and surface quality are excellent. A slight reduction in infrared and deep red transmission may also be associated with the LP330.

Durable, broadband, multilayer hard coated LP340 filters are economical glass protective windows that help eliminate reflected glare, thus improving contrast and brightness while protecting far more costly lenses, cameras and lighting. Custom shapes and sizes can be quickly fabricated in 1mm or 2.25mm thickness.

LP341 filters are similar to LP340 antireflection-coated protective windows except that they have the added advantage of an oleophobic coating on one side. They are offered in 1mm or 2mmm thickness. The oleophobic (anti-smudge) coating repels fingerprints, oils and moisture build-up, allowing for far easier cleaning. Frequent, uncontrolled rubbing during attempts to clean deposits or debris from the front surface of a lens will often cause scratching or pitting that results in loss of transmission and image clarity.

LP345 Windows are made from made from precision polished BK7 optical crown glass, resulting in no image distortion and excellent transmission in the visible and near-infrared spectrums. They are environmentally stable, stain-resistant and virtually free of bubbles and inclusions. MidOpt LP345 Windows are precision double-side, “flip” precision ground and polished and are coated on both sides. These durable broadband, multilayer anti-reflection coatings limit glare and other reflection losses while helping to achieve optimal image quality.

A LP470 filter passes most visible and near-IR wavelengths of light. Used with monochrome cameras to aid in increasing contrast and resolution by blocking UV and shorter deep blue wavelengths.  To achieve a similar effect while also blocking longer wavelengths including the near infrared, see our BP505 filter – transmitting longer wavelengths often leads to decreased contrast in many LED-illuminated imaging applications.

Typically used with a monochrome camera, LP500 filters block UV and virtually all blue light while passing longer visible and near-IR wavelengths. To block longer wavelengths, including the near infrared, see our BP525 filter.  Transmitting longer wavelengths can result in washed-out, low contrast images. This material may also be used to block stray light emitted by UV and blue LED light sources.

Used with black-and-white cameras to aid in increasing contrast and resolution, LP515 filters block blue and UV wavelengths and pass all other visible and near infrared light. To block longer wavelengths – including infrared light – see the BP535 bandpass filter. Longer wavelengths can have adverse affects when trying to separate subject matter.

Used with a monochrome camera to provide increased contrast and resolution, LP530 filters block blue-green and UV light and pass longer wavelengths. To block longer wavelengths, including the near-infrared, please see our BP595 Bandpass filter.

Normally used only in monochrome applications, LP550 filters block UV and shorter visible light wavelengths and pass orange, red and near-IR light.  To block longer wavelengths including infrared, wavelengths that your camera might be sensitive to, see our BP595 Bandpass filter option.

Used with monochrome cameras in orange-red imaging applications, LP580 material blocks UV, blue, yellow and green light, but passes longer wavelengths. To also eliminate longer wavelengths, consider our BP595 or BP635 Bandpass filters.

Typically used to pass red light, LP590 filters pass both red and near-infrared wavelengths- while blocking all other visible and UV light. In order to block longer IR wavelengths, please consider our BP635 Bandpass filter. Transmitting lR wavelengths will usually result in significantly decreased contrast.

A LP610 filter is suitable when using a monochorome camera and the intention is to pass both red and near infrared wavelength light. When red LED lighting is used, in most cases a BP635 or BP660 Bandpass filter will be more beneficial. In either of these cases, longer infrared wavelengths generally can have a negative effect on contrast. These filters have also seen use in single camera NDVI imaging applications as an alternative to “Wratten 25 or 25A” filters. However for such uses we would instead recommend our DB660/850 as a far superior alternative.

LP630 filters pass deep red and near-IR light while blocking all other visible wavelengths. Blocking infrared light will usually provide significant added benefit as far as easier recognition of subject matter. In that case, please see the BP660 Bandpass filter.

Recommended for night vision applications using a filtered broadband light source; incorporating a LP645 filter blocks most visible light while passing deep red and NIR wavelengths. To block longer wavelengths including the infrared, see our BP660 or BP695 Bandpass filters.

Used often with monochrome cameras to aid in increased contrast and resolution in the near-IR, LP665 filters will block most visible light while passing deep red and all NIR wavelengths. To block longer infrared wavelengths, see our BP695 Bandpass filter.

Recommended for enhancing subject recognition in the IR, LP695 filter material cuts on sharply at the beginning of the infrared portion of the spectrum, passing the complete NIR spectrum.  To block unwanted longer infrared wavelengths, using the BP735 Bandpass filter is an excellent alternative.

Used with a monochrome camera to improve infrared contrast and resolution, LP715 filters block all visible light while passing Near – IR wavelengths. To block deeper infrared light we recommend our BP800 Bandpass filter an effective choice when the filter material  is 1mm thick or less.

Recommend for use with laser diodes and LED lighting that operate in 810-830nm range – LP780 filter material is commonly used for Near-IR wavelengths found in machine vision applications.  An alternate-use bandpass filter would be our BP810 filter.

LP830 is suggested for use with infrared LED lighting emitting at 880nm or 850nm when it is also desirable to transmit other longer infrared wavelengths as well.  Otherwise we recommend our BP880 or BP850 filters not only for their longer wavelength blocking, but their overall higher peak transmissions.

LP850 filter material is excellent for eliminating overwhelming visible and NIR ambient light, particularly in cases where the spectral response of the camera beyond 900nm is approaching zero.  Otherwise we encourage customers to consider using an LP920 filter instead.

SP651 near-infrared blocking filters are designed to pass near-UV and visible energy from 350-645 nm while effectively blocking near-IR radiation from 650 – 1050 nm. This filter also blocks UV transmission below 350nm. CCD/CMOS imagers that need to pass near-UV AND visible wavelengths can utilize these filters to block near-IR light while preventing a reddish, washed-out color in the final image. Used at normal incidence, these filters can also be placed in front of some UV-transmitting arc lamps to limit the amount of near-IR radiation (= heat) that potentially might damage any subject under illumination. Although the SP651 substrate is bubble-free UV grade fused silica, it is possible that some sort of additional mechanical cooling of the area around this hot mirror may be important – depending on the wattage of the lamp that is being used.

MidOpt’s HT025 Linear Polarizing Film with is resistant to high temperature illumination. It solves the temperature sensitivity issues that are common with standard polarizing films, which typically fail or curl when introduced to high heat for an extended period of time.

Temperature Rating: 100°C x 240 hours & 90°C x 1000 hours

MidOpt’s HT008 Linear Polarizing Film is resistant to high temperature illumination. It solves the temperature sensitivity issues that are common with standard polarizing films, which typically fail or curl when introduced to high heat for an extended period of time.

Temperature Rating: 115°C x 240 hours

MidOpt’s HTA008 Linear Polarizing Film with self-adhesive backing is resistant to high temperature illumination. It solves the temperature sensitivity issues that are common with standard polarizing films, which typically fail or curl when introduced to high heat for an extended period of time.

Temperature Rating: 115°C x 240 hours

Used to eliminate or greatly reduce glare, 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. The locking thumb screw insures that vibration or accidental movement during cleaning keep the polarizer optimally positioned. Fixed, non-rotating mounts are also available.

This ultra-high contrast Linear Polarizer has an extended polarization efficiency, is abrasion and solvent resistant and can withstand higher temperatures than typical polarizers. To maximize glare reduction, use the PR120 in combination with the Pg120 over the illuminating light source. Custom shapes and sizes are available up to 635 x 405mm (25″ x 16″). For unmounted option please use PG120.

The PR1000 VIS/SWIR Wire Grid Linear Polarizer Mounted Filter is effective in both the visible and NIR (near-infrared), ranging from 400-2000nm. It’s efficient in glare reduction, with an average contrast ratio up to 8,000:1 and has an operating temperature rating of 100° C per 1,000 hours. To maximize glare reduction, use the PR1000 in combination with the PS1000 NIR Linear Polarizer Film over the illuminating light source.

The PR1000 also has an anti-reflection oleophobic coating to maximize transmission while repelling dirt and oil–making it the perfect polarizer for industrial imaging.

Temperature Rating: 115°C x 240 hours

Used to eliminate specular reflections and hot spots, Circular Polarizers in rotating mounts allow maximum flexibility and ease of use. However in most machine vision applications we recommend the use of linear rather than circular polarizers. Circular polarizers are recommended for eliminating glare from spherical surfaces or in cases where an auto-focus or metering system are used involving a beamsplitter or mirror mounted in the optical path inside the camera.

Maximizing the reduction of glare in the near-infrared and visible spectrums, because of its construction, this rotating polarizer is also excellent in situations where temperatures may reach up to 100º C (212º F). The rotating mount makes it easy to determine the point at which glare reduction is maximized, while the locking thumb screw available on all MidOpt mounted polarizers secures the filters position.

Best results are achieved when a corresponding linear polarizing film is used over the light source.

Particularly useful for minimizing glare in light-starved applications, these wire grid polarizers are also well-suited for applications involving high heat. The rotating mount makes it easy to orient the polarizer, finding the point where glare is minimized. The locking thumb screw available on all MidOpt rotating polarizers insures that accidental jarring or repositioning does not occur.

Best results are seen when this polarizer is used over the lens in conjunction with an appropriate polarizer film over the light source.

The PG120 Ultra High Contrast Glass Linear Polarizer is designed to reduce glare, increase color saturation and improve overall image quality when inspecting highly reflective surfaces in harsh, high temperature environments. This innovative glass polarizer solves the temperature sensitivity issues that are common with standard polarizing film, which typically fails or curls when introduced to high temperatures for a extended period of time. The PG120 is ideal for high-temperature-emitting LEDs and can be custom sized for any light source up to 405 x 635mm.

The PG120 is abrasion- and solvent-resistant and has an anti-reflection oleophobic coating to maximize transmission while repelling dirt and oil–making it the perfect polarizer for industrial imaging. It’s easy to clean, reliable and has ultimate glare reduction over the entire visible spectrum.

The best results are achieved when high-quality polarizing film, like the PG120, is used over the light source in conjunction with a polarizing filter over the camera lens. To maximize glare reduction, use the PR120 in combination with the PG120 Linear Polarizing Filter over the illuminating light source.

Temperature Rating: 115°C x 240 hours

AB555 acrylic absorptive bandpass filter passes light in the visible range and blocks all near-infrared, ultraviolet and violet wavelengths. This filter offers excellent laser protection at 1064nm (O.D. 6). Additionally, optical density exceeds 5.0 in the UV (190-375nm), near-IR (760-1070nm) and at 10,600nm. Standard thickness is 3.5mm. The material is a light greenish color in transmission. Sheet stock can be quickly laser cut to a wide variety of custom sizes and shapes, particularly when used as a cover for an enclosure or a laser protective window. Next day shipping is typical.

AC370 is a 1mm thick abrasion, scratch, breakage and solvent resistant acrylic protective window made to withstand harsh environments. It is half the weight of comparable glass windows and additionally features external oleophobic coatings that curb fingerprint smudging. The vacuum-sputtered coatings on both surfaces are 50 times more scratch resistant than untreated acrylic, far more durable than standard “dip” coatings, and are impervious to all types of solvents, fuels and other chemicals, including acetone, methylene chloride and MEK.

This material blocks almost all UV light while averaging greater than 98% transmission over the 450-700nm visible spectrum. This protection acrylic window is a highly effective yet economical solution for covering screens, camera enclosures and on-axis lighting modules. It is often recommended for FDA/EFSA applications where thickness is a concern and the use of glass is not permitted.

AC380 is an abrasion, scratch, breakage and solvent resistant acrylic protection window made to withstand harsh environments that is also half the weight of glass windows.

Compared to untreated acrylic, the vacuum-sputtered coatings applied to these windows are 50 times more scratch resistant and impervious to all types of fuels and chemicals, especially chlorinated solvents, acetone and MEK.

AC385 windows are made from a hard-coated, clear optical grade, cell-cast acrylic window material. This material offers the benefits of cell-cast acrylic at a cost similar to that of our antireflection-coated extruded acrylic windows.

AC389 anti-reflection coated acrylic windows are optimized for visible AND near-infrared transmission, making them ideal for use in security systems, 3D image capture, and some LIDAR applications. They are chemically and environmentally stable, resist solarization, and are cosmetically superb. Durable antireflection coatings increase light transmission while limiting glare and other unwanted reflections. At the same time, the acrylic substrate is a lighter weight, more impact resistant alternative compared to glass.  As an option, these windows can also be provided with oleophobic/hydrophobic top coatings.

AC400 is a 3mm thick abrasion-, scratch-, breakage-, and solvent-resistant acrylic protective window made to withstand harsh environments. It is half the weight of comparable glass windows and additionally features external oleophobic coatings that curb fingerprint smudging. The vacuum-sputtered coatings on both surfaces are 50 times more scratch-resistant than untreated acrylic, far more durable than standard “dip” coatings, and are impervious to all types of solvents, fuels and other chemicals, including acetone, methylene chloride and MEK.

This material blocks almost all UV light while averaging greater than 98% transmission over the 450-700nm visible spectrum. This protection acrylic window is a highly effective yet economical solution for covering screens, camera enclosures and on-axis lighting modules. It is often recommended for FDA/EFSA applications where thickness is a concern and the use of glass is not permitted.

AC685 IR Pass/Visible Block filter material is 2mm thick acrylic sheet with carefully controlled near-IR spectral properties. It can be laser cut according to customer specifications, and is typically mounted over full spectrum UV/Visible/IR lamp-based lighting to ensure that (mainly) infrared light reaches the subject while otherwise distracting visible light is effectively blocked.

AC760 is similar to AC685 IR Pass/Visible Block acrylic sheet except that it also blocks a portion of the very near IR. It is very well suited for use with 785nm, 810nm, 830nm or 850nm laser diode or LED illumination, or in situations where visible light emitted by arc/flash lamps needs to be blocked while near-IR illumination is passed.  AC760 material is custom cut from a 2mm thick sheet according to customer specifications.

AC800 Acrylic Near-IR Longpass Optical Filter is similar to AC760 IR Pass/Visible Block acrylic sheet except that it is protected with a scratch-resistant coating and blocks an additional portion of the near IR. This material is ideal for use with 850nm laser diode or LED illumination, or in situations where glass covers or filtering are not permitted (e.g., FDA or EFSA-regulated inspection applications).  AC800 material is supplied with removable protective tape on both surfaces and can be custom laser cut from 3mm thick sheet material according to customer specifications. Next day shipping is typical. Other thicknesses are available on request.

AC850 is similar to AC800 IR Pass/Visible Block acrylic sheet except that it blocks further into the near IR. It is available both with and without scratch-resistant hard coating and is very well suited for use with 880nm and 940nm LED illumination, or in situations where visible light emitted by arc/flash lamps needs to be blocked while near-IR light is passed.  AC850 material is custom cut from 3mm thick sheets according to customer requirements and is supplied with a removable protective overlay material. Orders for AC850 material are most often shipped “next day”. Other thicknesses are available on request.

AC900 is a stock IR Pass/Visible Block acrylic sheet material that blocks a large portion of the near IR spectrum. Both surfaces are hard-coated for scratch resistance. It is ideal for use with 940nm LED illumination or in other semi-covert situations where visible light emitted by arc/flash lamps needs to be blocked while IR illumination is passed. AC900 material is custom cut from 2mm thick sheet material according to customer specifications and is supplied with protective overlays on both surfaces. Other thicknesses are available on request.

AC915 is an IR pass/visible blocking acrylic sheet material that comes in 1mm and 3mm thicknesses. It is ideal for LIDAR and other SWIR time-of-flight applications.

LA080 corrects the ~80 mired color change created by some high color temperature lighting (appearing bluish) including some Xenon and metal halide lamps while eliminating a large portion of the UV spectrum.

LA120 counteracts the ~120 mired color change created by traditional white LEDs (appearing very bluish in cast) as well as some similar xenon and metal halide lighting, while eliminating a large amount of the UV spectrum. Instead of using warm white LEDs, placing an LA120 filter over the camera lens and using cool white (blueish) LEDs results in the same apparent color, but a light head with higher intensity, longer life, and lower cost.

The LB080 is used to raise lower color temperatures (by 80 mired) by highlighting a higher percentage of the red component of the spectrum – to create more natural looking color. It is sometimes used with fiber optic lighting.

Used to raise color temperature by reducing unnatural red tones created by some sodium and mercury lighting. LB120 filters are placed over the camera change and shift the apparent color by 120 mired.

Used to eliminate the strong greenish color that often results when illuminating with white fluorescent lighting.  The FL550 absorbs light in the middle of the visible spectrum, which is where most color cameras have their strongest response, eliminating a greenish cast, resulting in true-to-life color rendition.