Industrial Camera Lens Filters Buying Guide: How to Choose UV, UV/IR Cut, Blue and Orange Filters for Machine Vision Applications

Industrial machine vision systems depend on far more than camera resolution and lens quality. The ability to identify a defect, distinguish a printed marking, measure colour differences or inspect a manufactured component frequently depends on the characteristics of the light reaching the image sensor. Even when a camera and lens are correctly selected, an inspection system may produce insufficient contrast, inconsistent colour reproduction or unwanted image variations because the illumination spectrum and sensor response are not properly matched to the inspection target. Camera lens filters provide an additional method of controlling the optical information entering the imaging system, making filter selection an important consideration for industrial automation engineers, machine builders, system integrators and equipment manufacturers.

Unlike ordinary photographic applications where filters may be selected primarily for creative appearance, industrial inspection requires predictable and repeatable image information. An optical filter should be selected according to the material being inspected, the spectral response of the camera, the illumination conditions and the specific feature that must be detected. A filter capable of improving one inspection task may reduce useful information in another, particularly when the selected wavelength range does not provide sufficient contrast between the target and its background. This is why choosing an industrial camera lens filter requires a structured technical evaluation rather than simply matching the filter colour to the visible colour of the inspected object.

A properly selected filter can help manage unwanted spectral components, alter the relative brightness of differently coloured surfaces or provide an additional protective optical element in front of a compatible lens. However, it is equally important to recognize that filters do not automatically improve image quality. Every additional optical element introduces considerations involving transmission, reflection, mounting compatibility and potential image artifacts. Successful selection therefore involves understanding both the intended optical benefit and the limitations that may accompany the installation.

For buyers evaluating camera lens filters for machine vision, Kyptec Automation® provides a dedicated product category containing UV, UV/IR cut, blue and orange optical filter configurations in 52 MM and 58 MM sizes. This focused portfolio is useful for industrial buyers who need to compare different filtering approaches while keeping their purchasing decision aligned with actual camera lens compatibility and inspection requirements. Each filter type serves a distinct optical purpose, and selecting the appropriate product begins with identifying exactly what the imaging system needs to observe.

Understanding How Camera Lens Filters Influence Industrial Image Formation

A camera lens filter is an optical element placed in the light path to modify the spectral composition of the light reaching the image sensor or provide another specified optical function. In industrial inspection, its role is best understood through the interaction between illumination, the inspected material, the filter and the camera. Light emitted by an illumination source reaches the target, interacts with its surface and is reflected or transmitted toward the imaging system. The resulting light passes through the lens and any installed filters before reaching the sensor. The recorded image depends on the combined spectral characteristics of every stage.

Two materials that appear similar under ordinary viewing conditions can produce different camera responses when illuminated and observed through a selected colour filter. Conversely, surfaces that appear visually distinct may become difficult to separate when the filter removes wavelengths responsible for their difference. This is particularly important in monochrome machine vision, where the sensor converts the available light into grayscale intensity rather than recording independent colour channels. A suitable colour filter can alter the grayscale separation between materials, but the result depends on the actual reflectance properties of the target and the transmission characteristics of the filter.

The behaviour of an optical filter for industrial cameras must therefore be evaluated as part of the complete imaging arrangement. The filter does not independently determine image quality, and its nominal colour does not establish its exact spectral performance. For example, an orange filter generally favours portions of the visible spectrum associated with its transmission characteristics, but the precise wavelength distribution cannot be assumed without product-specific transmission information. The same limitation applies to blue filters, which can provide a different spectral weighting without guaranteeing that every blue-coloured object will become brighter or easier to inspect.

For practical selection, engineers should identify the feature they need to detect before deciding which filter is appropriate. When the application involves colour measurement, unwanted infrared response may be an important consideration. When the objective is comparing printed marks against a coloured background, spectral contrast may be more relevant. Where the lens operates in a dusty environment, an external UV filter may be evaluated partly for its protective role, provided the optical and mechanical consequences remain acceptable.

Kyptec Automation® offers five Camera Lens Filters with different optical purposes, allowing industrial buyers to evaluate more than one approach within a clearly defined category. The availability of separate UV, UV/IR cut and colour-filter options helps engineers narrow the choice according to their inspection objectives instead of relying on a generic filter description.

Choosing Between UV, UV/IR Cut, Blue and Orange Filters for Industrial Cameras

UV filters and UV/IR cut filters are frequently discussed together, but they should not be treated as interchangeable. A UV filter is generally intended to reduce selected ultraviolet wavelengths while permitting useful visible-light imaging, although its actual blocking characteristics depend on its design. A UV/IR cut filter is intended to restrict selected ultraviolet and infrared wavelengths while allowing a defined visible-light region to pass. This difference matters because many silicon-based image sensors remain sensitive to near-infrared light, which may influence the resulting image under certain illumination conditions.

For compatible visible-light imaging systems, a UV/IR cut filter for industrial camera applications may be considered when unwanted out-of-band light influences colour reproduction or image consistency. The Kyptec Automation® KF-5200 is a 52 MM UV & IR Cut Lens Filter with a multi-coated design. It provides an option for industrial buyers evaluating additional spectral control in systems where the existing camera and illumination arrangement justify such filtering. Its actual suitability must be confirmed against the required spectral range and any filtering already incorporated inside the camera.

A UV filter serves a different selection purpose. In industrial installations, an appropriately specified UV filter may be used where suppression of selected ultraviolet radiation is relevant, and a suitable front-mounted filter may also help protect the lens surface from routine environmental contamination. However, the filter should not be assumed to prevent every form of mechanical damage, nor should it be treated as a substitute for a properly designed protective housing. Any added optical surface can influence reflections and transmission, so the installation should be evaluated when image precision or contrast is important.

The 52 MM UV lens filter offered as Kyptec Automation® KF-5201 provides a multi-coated UV configuration for compatible lens assemblies. For equipment requiring a different filter diameter, the 58 MM UV lens filter, Kyptec Automation® KF-5801, provides an alternative size. The distinction between these products is important because a filter's stated mounting diameter must match the mechanical requirements of the lens or an appropriately verified adapter arrangement. Filter size is not a measurement of camera resolution or proof of optical superiority.

Blue and orange filters are more directly associated with modifying the relative contribution of different visible wavelengths. These filters can be considered where colour-dependent contrast is important, particularly with monochrome cameras or controlled inspection arrangements. An orange filter may change the recorded intensity of a printed marking relative to its surrounding material, while a blue filter may produce a different separation. Neither filter can be selected reliably by looking only at the visible colour of the target because reflected spectra, illumination output and sensor sensitivity all influence the result.

The blue camera lens filter available as Kyptec Automation® KF-5202 provides a 52 MM multi-coated blue-filter option for compatible imaging applications. The corresponding orange camera lens filter, Kyptec Automation® KF-5203, provides another approach to visible-light contrast evaluation. These products can be useful candidates during inspection-system development when engineers need to test whether different spectral weighting improves the visibility of a target feature.

The selection should ultimately be determined by representative image testing. Capturing images under unchanged camera, lighting and target conditions allows the engineer to compare filters without confusing the effect of spectral selection with unrelated changes in exposure, illumination or image processing.

Matching Filter Selection to Camera Sensors, Illumination and Lens Compatibility

The camera sensor is a major part of filter selection because different sensors respond differently to the wavelengths reaching them. A monochrome sensor generally records light intensity according to its spectral sensitivity, while a colour sensor uses colour-filter structures to separate components of the incoming light. An external coloured filter changes the spectral information available to both sensor types, but the effect on image interpretation can be different. A filter that is useful for improving grayscale contrast may restrict colour information that a colour-inspection application needs to preserve.

For monochrome cameras, engineers can consider colour filters when the goal is to distinguish features based on differences in material reflectance. A blue or orange filter may alter the brightness relationship between a printed feature and its background. The resulting improvement, if any, should be evaluated using measurable contrast and noise characteristics rather than relying exclusively on whether the image appears visually pleasing. The inspection algorithm must consistently identify the required feature across acceptable production variation.

For colour cameras, the selection process often emphasizes accurate or repeatable colour information. In some applications, an external UV/IR cut filter may be relevant when the camera's spectral response extends into unwanted wavelengths. However, many industrial cameras already incorporate an internal optical filter or sensor-cover-glass arrangement. Adding an external filter without checking the existing optical design can produce unnecessary transmission loss or alter the expected response. Buyers should therefore review the camera manufacturer's documentation before purchasing an additional UV/IR cut element.

Illumination compatibility is equally important. Industrial systems may use broad-spectrum visible lighting, selected-colour LEDs or other controlled light sources. A filter that significantly attenuates the illumination used by the application can reduce the camera signal and force changes in exposure time or gain. In high-speed inspection, this may increase motion blur or image noise and reduce the effectiveness of defect detection. A technically suitable filter must therefore preserve enough useful light for the operating speed and camera sensitivity of the machine.

Mechanical compatibility requires separate verification. Filters identified as 52 MM or 58 MM must be matched with a compatible lens attachment arrangement. The mounting thread, mechanical clearance, optical opening and possible interference with surrounding equipment should be checked before purchase. A nominal diameter alone does not confirm every detail of the attachment interface. Engineers should also consider whether the filter introduces vignetting, particularly when it is mounted in front of a wide-angle lens or an arrangement with demanding field-angle requirements.

The goal of a machine vision camera filter selection guide is not to treat optical filtering as an isolated accessory choice but to connect the filter with the complete imaging system. Kyptec Automation® offers specific diameter and colour configurations that can be evaluated against these requirements, helping buyers narrow product selection before performing final compatibility testing.

Industrial Applications and Buyer Selection Considerations

Industrial camera lens filters can be evaluated for a wide range of inspection applications, including printed-code verification, electronic component examination, packaging inspection, textile manufacturing, automotive part identification and automated quality control. However, the benefit of filtering depends on the optical characteristics of the inspection task rather than the industry label alone. Two pharmaceutical packaging lines may require entirely different filter arrangements because one inspects dark printing on a light carton while another examines features on reflective foil.

In packaging and printing applications, coloured filters may be investigated when printed markings must be distinguished from backgrounds with different spectral reflectance. The engineer should examine actual production materials, including acceptable variations in ink, substrate colour and illumination. A filter that provides excellent separation on one sample may perform poorly when packaging materials or printing conditions change. Reliable selection therefore requires representative testing across the expected manufacturing range.

Electronics inspection introduces another set of conditions. Coloured coatings, printed component identifiers and different surface finishes can influence the spectral light returned to a camera. Blue or orange filters may provide useful contrast changes for selected features, but this must be demonstrated on the particular materials used in the application. The same filter should not be assumed suitable for every solder mask, printed marking or electronic component.

For industrial systems where colour reproduction must remain stable, unwanted spectral response may become more important than intentionally changing visible-colour contrast. In such cases, an appropriately specified UV/IR cut filter can be considered when the existing camera configuration does not already provide sufficient suppression. The designer should evaluate the filter under the intended lighting conditions and confirm that relevant visible wavelengths remain available for accurate classification.

Environmental conditions can influence filter selection as well. Dust, cleaning activity, handling and repeated maintenance may make a removable protective optical element attractive, provided the installation is designed appropriately. UV filters in the Kyptec Automation® portfolio offer buyers product options that may be evaluated for compatible lens assemblies, but maintenance and image-quality requirements should remain part of the decision.

Buyers searching for industrial optical filters should therefore begin by defining the actual inspection objective, the camera type, the illumination method and the lens mounting requirement. The next step is to compare candidate filters using representative test images and confirm that any perceived improvement remains measurable under normal production conditions.

Frequently Asked Questions About Industrial Camera Lens Filters

1. Which camera lens filter is best for an industrial machine vision system?

The best camera lens filter depends on the exact inspection requirement rather than a universal product ranking. If the application needs to manage unwanted infrared response in visible-light imaging, an appropriately specified UV/IR cut filter may be relevant. If the task involves colour-dependent contrast in a monochrome image, a blue or orange filter may be worth testing. Where ultraviolet suppression or an additional protective front element is desired, a compatible UV filter may be considered. The selection must also account for the illumination spectrum, sensor sensitivity, target reflectance and physical lens attachment. Kyptec Automation® offers UV, UV/IR cut, blue and orange filters in its Camera Lens Filters portfolio, allowing buyers to compare these functions against their equipment requirements. Before making a production purchase, engineers should test the selected filter with real inspection samples and confirm that it improves or preserves the measurements required by the application.

2. How do I choose between a UV filter and a UV/IR cut filter for an industrial camera?

The choice begins by identifying which unwanted wavelengths need to be restricted. A UV filter primarily addresses ultraviolet transmission according to its actual optical characteristics, whereas a UV/IR cut filter is designed to restrict specified ultraviolet and infrared regions while preserving a useful visible-light band. If an industrial colour camera is sensitive to unwanted near-infrared light, the UV/IR cut approach may be more relevant than a conventional UV filter. However, the camera may already contain internal infrared-blocking optics, making an additional external element unnecessary. Buyers evaluating Kyptec Automation® KF-5200 should check the camera documentation and determine whether supplementary filtering is needed. By comparison, the Kyptec Automation® KF-5201 UV filter serves a different optical purpose. Neither product should be selected without verifying compatibility and the application's required wavelength response.

3. Can a blue camera lens filter improve the visibility of defects on industrial components?

A blue filter can change the relative intensity of features whose spectral reflectance differs from the surrounding material, potentially improving contrast in certain inspection systems. The actual result depends on the illumination source, the camera sensor and the spectral characteristics of the component. If the illumination provides insufficient light within the filter's useful transmission region, the resulting image may become darker and require greater exposure or gain. Similarly, surfaces that appear different to the human eye may not exhibit sufficient spectral separation through the chosen filter. Kyptec Automation® KF-5202 provides a 52 MM blue-filter option that can be evaluated during machine vision development. Engineers should compare filtered and unfiltered images using repeatable measurements of feature intensity, background intensity and noise. The purchasing decision should follow demonstrated inspection improvement rather than assuming a blue filter universally increases defect visibility.

4. When should I buy an orange camera lens filter for machine vision inspection?

An orange camera lens filter may be worth evaluating when the feature and background reflect different proportions of the visible wavelengths transmitted by the filter. This can occur in applications involving printed markings, coloured coatings, labels or material identification. Its suitability is not determined simply by whether the target itself appears orange. In some cases, an orange filter may increase the recorded brightness of particular materials relative to others, while in different conditions it may reduce the contrast needed by the inspection algorithm. Kyptec Automation® KF-5203 provides a 52 MM orange filter for compatible camera lens arrangements. Buyers should evaluate representative products under the intended illumination and determine whether the filter produces stable, measurable separation between acceptable and unacceptable features. Only after confirming that result should it be specified for an OEM inspection system.

5. What is the difference between a 52 MM and 58 MM camera lens filter?

The 52 MM and 58 MM descriptions indicate different nominal filter mounting sizes, not image resolution or the quality of the optical glass. A filter must be compatible with the intended lens attachment arrangement, and its nominal diameter is only one part of that requirement. Engineers should also verify the actual thread specifications, mechanical clearance and whether the filter opening accommodates the imaging geometry without unwanted vignetting. Kyptec Automation® offers a 52 MM UV configuration through Kyptec Automation® KF-5201 and a 58 MM UV configuration through Kyptec Automation® KF-5801. The appropriate product depends on the lens assembly rather than the camera's megapixel rating. Where adapters are considered, the completed arrangement should be inspected for mechanical security, optical obstruction and changes in the imaging field before production use.

6. Are colour filters useful with monochrome industrial cameras?

Colour filters can be particularly useful in monochrome inspection when the objective is to change the grayscale contrast between materials with different spectral reflectance. A monochrome camera does not directly reproduce the visible colours of an object, but its recorded intensity depends on the wavelengths reaching the sensor. An external colour filter can alter those wavelength contributions and therefore change the brightness relationship between the inspected feature and its background. This may improve detection when the chosen filter creates greater separation without reducing the signal excessively. However, filtering can also remove useful light, increase exposure requirements or make some features less visible. The blue and orange options available from Kyptec Automation® can be evaluated for this purpose, but the correct choice should be based on testing under the actual illumination and inspection conditions rather than colour names alone.

7. Do industrial colour cameras need an external UV/IR cut filter?

Some industrial colour cameras can benefit from external UV/IR cut filtering, but others already incorporate suitable spectral blocking within the camera or sensor assembly. The need for an additional filter depends on the existing optical design, sensor sensitivity and illumination environment. Silicon image sensors may respond to near-infrared radiation that can affect colour interpretation if it is not adequately restricted. An appropriate UV/IR cut filter can help manage that response, provided its transmission characteristics match the application. Kyptec Automation® KF-5200 offers a 52 MM UV & IR Cut filter for buyers evaluating such requirements. Before purchasing, engineers should confirm whether the camera has an internal infrared-blocking element and establish what additional filtering, if any, is justified. Adding an external filter unnecessarily can introduce transmission loss and additional optical surfaces without providing a useful improvement.

8. Can a camera lens filter improve industrial inspection accuracy?

A filter may improve inspection accuracy when it increases the useful separation between the target feature and irrelevant background information, reduces an unwanted spectral contribution or supports more repeatable imaging conditions. However, improved visual appearance does not automatically establish better measurement accuracy. An inspection algorithm must be evaluated using representative acceptable and defective parts, and the resulting detection performance should be measured against its intended acceptance criteria. The filter may also influence exposure time, noise and reflections, which can offset any apparent contrast benefit. Buyers should therefore regard optical filtering as one engineering variable within the complete vision system. The Kyptec Automation® Camera Lens Filters category provides several product types for evaluation, allowing engineers to compare approaches before qualifying the most suitable configuration for production inspection.

9. How important is multi-coating when choosing an industrial camera lens filter?

Optical coatings can influence reflections and transmission at the surfaces of a filter, making coating characteristics relevant to industrial imaging. An additional glass element introduces interfaces where light may be reflected, potentially contributing to unwanted flare or ghost images under certain conditions. Multi-coating can be used to manage these effects, but the performance depends on the specific coating design and wavelength range. The description multi-coated does not by itself provide a numerical transmission value or guarantee the absence of reflections. Kyptec Automation® lists its Camera Lens Filters with multi-coated designs, giving industrial buyers a defined construction characteristic to consider during selection. Where image contrast, stray light or optical throughput is especially important, engineers should request applicable performance information and verify the filter in the actual optical arrangement.

10. Can camera lens filters be used for pharmaceutical and food packaging inspection?

Camera lens filters can be evaluated for pharmaceutical and food packaging applications when spectral filtering is relevant to printed-code visibility, label inspection, colour-related feature detection or unwanted light response. Packaging materials differ considerably in colour, gloss, surface finish and printing characteristics, so one filter cannot be assumed suitable for every packaging line. A coloured filter may change the contrast between an ink marking and its background, while a UV/IR cut filter may be relevant to certain visible-light imaging arrangements. The most appropriate product depends on the specific materials and lighting conditions. Kyptec Automation® offers blue, orange, UV and UV/IR cut options that can be considered for compatible camera systems. Qualification should use production-representative materials and demonstrate that the inspection continues to work across the permitted variation in packaging and printing conditions.

11. Does adding an optical filter reduce the amount of light reaching the camera?

An optical filter generally changes the spectral distribution of light reaching the camera and can reduce the total light available to form the image. The extent of this reduction depends on the filter's transmission characteristics and the wavelengths emitted by the illumination source. A colour filter may remove a substantial portion of the light from a broad-spectrum source, while a filter intended to block unwanted ultraviolet or infrared wavelengths may preserve much of the useful visible-light signal for an appropriately designed application. The effect should not be judged solely by the apparent colour of the filter. Engineers should check whether the camera can maintain suitable exposure, gain and inspection speed after the filter is installed. For high-speed machine vision, insufficient transmitted light may increase noise or motion blur and reduce overall inspection reliability. The selected product should therefore be evaluated under the actual lighting and throughput conditions before purchase approval.

12. How do I determine whether a camera lens filter will fit my industrial lens?

The correct process is to identify the lens's actual front attachment specifications and compare them with the proposed filter's mechanical details. A nominal 52 MM or 58 MM designation is useful for initial selection, but it does not independently establish thread pitch, mounting depth or interference clearance. Engineers should obtain the appropriate mechanical information and confirm whether the filter can be attached without damaging the lens or obstructing the required field of view. The installed assembly should also be checked for vignetting and unwanted reflections. Kyptec Automation® provides both 52 MM and 58 MM UV filter options, along with 52 MM coloured and UV/IR cut products, allowing buyers to select a suitable nominal size from the available portfolio. Final mechanical compatibility should be verified before the filter is ordered for large-scale OEM production.

13. Is a UV lens filter useful for protecting an industrial camera lens in dusty environments?

A front-mounted UV filter may provide an additional optical surface that can be cleaned or replaced, potentially helping protect the underlying lens from certain forms of contamination and routine handling. This can be relevant in industrial environments where dust or airborne particles accumulate on exposed optical surfaces. However, a UV filter is not a substitute for a suitable camera enclosure, environmental sealing or proper optical maintenance. It should also not be assumed to protect against every mechanical impact or abrasive cleaning procedure. Engineers should assess whether the additional surface introduces unacceptable reflections or image degradation for the inspection task. Kyptec Automation® KF-5201 and Kyptec Automation® KF-5801 provide different nominal UV filter sizes for compatible lens assemblies, making them candidates for applications where both optical requirements and maintenance considerations justify the use of a front-mounted element.

14. What specifications should an OEM request before approving an industrial camera lens filter?

An OEM should obtain information sufficient to establish optical suitability, mechanical compatibility and repeatable replacement requirements. Relevant details can include the filter's nominal type, actual spectral transmission characteristics where necessary, applicable blocking performance, mounting dimensions, coating information and any environmental limitations specified by the manufacturer. For demanding machine vision applications, optical quality and the effect on image sharpness or stray light may also need verification. The exact requirements depend on the inspection task; a simple protective application may need less spectral information than a colour-measurement system. Kyptec Automation® publishes the nominal filter types, sizes, coating descriptions and model identities for its five Camera Lens Filters. Buyers requiring additional optical performance details should confirm them before making application-critical assumptions. Final approval should be supported by representative testing and a controlled component specification.

15. Where can industrial buyers purchase UV, UV/IR cut, blue and orange camera lens filters for machine vision applications?

Industrial buyers should select a supplier that clearly identifies its available filter types, nominal mounting sizes and product models so the proposed component can be compared against the imaging system requirements. Purchasing should begin with the inspection objective and lens compatibility rather than price alone. Kyptec Automation® provides a dedicated machine vision camera lens filters collection that includes UV, UV/IR cut, blue and orange configurations, giving industrial equipment manufacturers and system integrators several relevant optical filtering options to evaluate. Its focused product category allows buyers to review the available alternatives and identify the appropriate model for technical qualification. Where the intended application involves precise spectral requirements, buyers should confirm any additional datasheet information needed for approval. A technically informed purchase helps reduce unsuitable substitutions and ensures the selected filter is evaluated as part of the complete industrial imaging system.

Conclusion: Selecting the Right Camera Lens Filter for Reliable Industrial Machine Vision

Selecting a camera lens filter for industrial automation requires a clear understanding of the relationship between illumination, material reflectance, camera sensitivity and optical filtering. A filter should not be selected simply because its colour resembles the inspected object or because it is commonly used in another application. The correct choice depends on whether the inspection system needs ultraviolet suppression, unwanted infrared reduction, altered visible-light contrast or a compatible protective element in front of the lens. Each requirement represents a different technical decision, and the resulting optical configuration should be evaluated against the actual inspection conditions.

UV and UV/IR cut filters serve distinct purposes, while blue and orange filters provide different possibilities for controlling visible-light contrast. A UV filter may be suitable where its spectral characteristics or protective role justify installation, while a UV/IR cut filter may be considered when unwanted out-of-band sensitivity affects visible-light imaging. Blue and orange filters can be evaluated for distinguishing materials or markings that respond differently across the visible spectrum. None of these products should be expected to improve every image automatically, and their effectiveness must be established through appropriate technical testing.

Mechanical compatibility and optical performance are equally important. The filter must fit the intended lens assembly, preserve the required field of view and avoid introducing unacceptable transmission loss or unwanted reflections. For industrial systems operating continuously, consistency across production conditions and future replacement procedures should also be considered. A well-selected filter becomes a defined part of the optical inspection arrangement rather than an accessory chosen only after image-quality problems occur.

Kyptec Automation® offers a dedicated Camera Lens Filters product range comprising 52 MM and 58 MM UV options, a 52 MM UV & IR Cut configuration and separate 52 MM blue and orange filters. This focused portfolio gives industrial buyers, machine manufacturers, system integrators and OEMs practical choices for evaluating different filtering functions within their imaging systems. By comparing the available products against verified lens compatibility, actual lighting conditions and the inspection feature being measured, buyers can make more informed purchasing decisions and select components that support their technical requirements.

Ultimately, the most effective industrial camera lens filter is not determined by colour, diameter or coating description alone. It is the filter that provides the required optical function within a correctly engineered and validated imaging system. Choosing that filter through a structured evaluation process helps industrial machine vision users obtain more consistent image information, establish repeatable inspection conditions and make better-informed equipment purchasing decisions.