Our Optical Filters

Stunning Filters from MidOpt.

MidOpt Bandpass Filters are specially designed for industrial imaging. Available in UV, VIS and NIR passbands, these filters achieve optimal contrast whilst improving system control, repeatability and stability. MidOpt filters block interfering wavelengths, eliminating the need for shrouds, and increase resolution by reducing chromatic aberration. - Anti-reflection coated for maximum transmission - Hard coated, single substrate fabrication - Exceptional surface quality; 40/20 scratch/dig Bandpass Filters are used in a variety of industries, including machine vision, factory automation, security and surveillance, license plate recognition, medical and life science, agricultural inspection, aerial imaging, motion analysis, photography and cinematography. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

MidOpt Dual Bandpass and Triple Bandpass Filters are most commonly used for security and surveillance, intelligent traffic solutions and Normalized Difference Vegetation Index (NDVI) imaging. - Pass visible light and a specific portion of the visible (VIS) and near-infrared (NIR) spectrums - Ideal for color camera applications that utilize daytime sunlight and NIR illumination at night - Achieve accurate color rendition by blocking interfering wavelengths - Eliminate the need for dual sensor imaging - Anti-reflection coated for maximum transmission - Hard-coated, single-substrate fabrication - Exceptional surface quality; 40/20 scratch/dig Dual Bandpass Filters are becoming increasingly popular in NDVI aerial drone inspection, allowing for single sensor imaging and reduced operation payload. NDVI, traditionally achieved by satellite imagery, can now be obtained utilizing Dual Bandpass Filters and personal aerial imaging devices. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Often referred to as a “sharp-cut” filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths. - Economical solution for isolating specific spectral regions - Peak transmission ?90% - StablEDGE® design reduces angular dependency and minimizes short-shifting effects - Anti-reflection coated for maximum transmission in VIS and NIR spectrums - Can be used with Shortpass Filters for a custom, fine-tuned Bandpass Filter - Double-side polished glass for exceptional parallelism and optical flatness - Exceptional surface quality; 40/20 scratch/dig - Available in wavelength ranges from 350nm to 1500nm Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio. Longpass Filters are also commonly used in photography and astronomy. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Often thought of as “IR-cut” filters, Shortpass Filters are specifically designed to pass a broad spectrum of shorter wavelength light, while blocking longer visible (VIS) and near-infrared (NIR) wavelengths. - Designed to have a sharp transition between shorter wavelengths (which are passed) and longer wavelengths (which are blocked) - Peak transmission ?90%* - Can be used with Longpass Filters for a custom, fine-tuned Bandpass Filter - Anti-reflection coated for maximum transmission - Exceptional surface quality; 40/20 scratch/dig - Available in wavelength ranges from 340nm to 785nm *Peak Transmission SP701 = 85%, SP705 = 88% Shortpass Filters are commonly used in color imaging to achieve natural color rendering. They can also be used to protect the sensor from NIR laser damage or to reduce IR radiation or “camera bloom” created during hot metal or glass extrusion processes. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

MidOpt Neutral Density Filters serves as “sunglasses” for your system and can be used with monochrome or colour cameras. Designed to reduce light intensity neutrally over a specific wavelength range without affecting image colour or contrast. - Available in a variety of optical densities - Reduce light intensity while maintaining a wide aperture and shallow depth of field. Every 0.3 density increment equals one f-stop - Minimize pixel saturation - Can be stacked with other Neutral Density Filters to test various optical densities - Exceptional surface quality; 40/20 scratch/dig Applications include imaging in intense lighting situations (i.e. molten metal and welding), outdoor aerial imaging and photography. Neutral Density Filters help reduce shutter speed to create blur, preventing a “jello” effect in aerial imaging. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Polarizers are designed to reduce specular glare by passing only the light polarized in the direction perpendicular to the reflected light (glare). In addition, they help improve contrast, increase colour saturation and detect imperfections in transparent materials. MidOpt Polarizing Filters can be easily and securely mounted to your lens and light source for maximum extinction or glare reduction. - Contrast ratios average up to 10,000:1 - Linear, circular and wire grid polarizers are available for visible (VIS) and near-infrared (NIR) spectrums - Rotating mount with locking thumb screw to fine tune glare reduction - Exceptional surface quality; 40/20 scratch/dig Polarizers are commonly used to reduce glare from non-metallic in objects with smooth surfaces or surfaces covered with grease, oil or liquid. For best results, use an optical-grade Polarizer over the lens and Polarizing Film over the light source. The PR120/PG120 offers ultra-high contrast and an anti-reflection oleophobic coating. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Protective Filters are designed to shield your lens and lighting from dirt, dust, liquids, impact and harsh environments without sacrificing image quality. - Economical solution to protect expensive lenses - Useful for imaging in ultraviolet (UV), visible (VIS) and near-infrared (NIR) spectrums - Available with a high-efficiency, anti-reflection coating to maximize transmission to 98% or more - Offered in both glass and acrylic - Exceptional surface quality; 40/20 scratch/dig Protective Filters are useful in all imaging applications. The LP285 can withstand high temperatures and is impact resistant (similar qualities to Pyrex). For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Acrylic Longpass Filters are a durable, lightweight and economical solution for inspection windows. They can protect a lens in environments where broken glass might pose a problem. - High transmission ranging from 90 to 98% - Available with an anti-reflection coating for maximum transmission - Optical-grade acrylic - Impact-resistant - Half the weight of glass Acrylic Longpass Filters are frequently used for lens protection and economical enclosure windows, as well as over light sources to control the wavelength emission of broad spectrum light sources. Because of their durability, they’re commonly used in Food & Drug Administration (FDA) and European Food Safety Authority (EFSA) regulated applications where glass over the inspection area is not permitted. AC370 and AC380 offer anti-abrasion, anti-reflection coating, which can also withstand harsh solvents such as alcohol, acetone or MEK. For more information, please feel free to consult the datasheet below.

Stunning Filters from MidOpt.

Light Balancing Filters correct artificial lighting so colours appear more natural. These filters balance colour, preventing the need for additional software processing. This allows for greater image stability and control. - Achieve accurate colour images when using an artificial light source - Increase contrast by correcting the emission spectrum of various light sources - Exceptional surface quality; 40/20 scratch/dig - LA series: Reduce blue shading (“warm” the scene) and commonly used with white LED and xenon strobe lighting - LB series: Subdue the reddish hue found with some tungsten, halogen, sodium and other light sources - FL series: Used to reduce the greenish cast created by fluorescent lighting Commonly used in colour applications (i.e. machine vision/factory automation, photography, and fluorescence imaging). For more information, please feel free to consult the datasheet below.