MidOpt Filters – Where Image Quality Begins:
Bandpass filters are often one of the easiest ways to drastically improve image quality. They are designed with a Gaussian transmission curve to emulate the output of the most common types of LEDs used in machine vision and are great for testing the effects of monochromatic imaging. All MidOpt bandpass filters have an anti-reflection coating to ensure maximum transmission.
Multi bandpass filters transmit two or three specific wavelength ranges through a single filter. They allow for natural color rendition during the day and near infrared illumination at night ensuring that precise, high-contrast images are obtained. This makes them a great choice for intelligent traffic solutions, security surveillance and agricultural inspection.
Longpass filters provide seamless transition from reflection to transmission and are available in many wavelengths, depending on the needs of your system. Longpass filters are best used in a controlled environment when multiple wavelengths need to be passed and are an economical solution for blocking excitation light in fluorescent applications.
Shortpass/Near IR Cut
Shortpass filters have unmatched transition from transmission to reflection and provide excellent contrast. They’re best used in color imaging to achieve natural color rendering and block infrared saturation.
Polarizing filters reduce reflection, enhance contrast and detect imperfections in transparent materials. They’re best used for applications that have overwhelming reflection when inspecting objects on shiny surfaces.
Neutral density filters reduce light saturation and are recognized in the industry as “sunglasses for your system.” Both absorptive and reflective style options are available, and they’re best used for applications where there’s overpowering brightness. They serve as great solutions for lens aperture control and increasing field depth.
Protective filters are best used for lens protection. They’re made from high-quality polished glass and optical-grade acrylic and are available with anti-reflection coating to maximize transmission. Acrylic protective filters have an abrasion-resistant coating and are useful for FDA/EMA applications.
Light balancing filters are used to achieve a more accurate color rendering and to keep costs low with LED or metal halide lighting. By blocking most of the blue spectrum transmitted by cool white LED lamps, the object being inspected has a more natural look to the human eye.
MidOpt filter test kits allow users to evaluate and improve image quality, solve applications quickly, instantly test the effects of color/wavelength, control the variability of ambient light, evaluate glare reduction, enhance contrast of objects or desired features and are available with ultraviolet (UV), visible (VIS) and near-infrared (NIR) passbands. Being equipped with a large variety of lighting options can be impractical and expensive. Testing with MidOpt filters offers significant savings in time and resources when working toward an optimal lighting solution. Once an appropriate wavelength range has been determined, a bandpass filter is then used to complement the chosen lighting and control potential interference from ambient light.
Filter, lens & lighting accessories are available: Right Angle Attachments view at 90°; Extension Rings decrease MOD; Lens Enclosures to protect the lens; Step Adapter Rings allow for filter and lens size versatility; Close-Up Lens Sets increase focus distance; Cleaning Kits for all optics, lenses and lighting.
MidOpt supplies custom, stock and modified-stock optical components for a variety of applications and end uses. Orders ranging in volume for one to tens of thousands of pieces can be accommodated. Spherical Lenses; Cylindrical Lenses; Multi-Element Lenses; Windows & Dust Covers; Mirrors; Prisms; Wedges; Light Pipes; Diffusers; Mechanical Parts; Custom Filters; Beamsplitters.