SWIR Camera Lens for Glossy and Reflective Surfaces: Polarization, Specular Reflection and Glare-Control Strategies

Glossy plastics, polished components, coated films, wet surfaces, sealed packaging, reflective metals and curved industrial parts can be difficult targets for any machine-vision system because the camera does not receive only information about the material itself. It also receives light produced by surface reflection. In a 900–1700 nm SWIR inspection system, a strong specular reflection can become brighter than the material-dependent signal that the inspection actually needs, causing glare, localized saturation, unstable grayscale values or false classification as the product angle changes. A successful SWIR camera lens for glossy and reflective surface inspection must therefore be selected as part of a complete optical geometry in which viewing angle, illumination angle, polarization strategy, field of view, working distance, aperture and spectral wavelength are engineered together. The objective is not simply to suppress every reflection; it is to prevent unwanted surface reflection from masking the wavelength-dependent information used for material identification, contamination detection, moisture-sensitive analysis or other industrial inspection decisions.

The dedicated Kyptec Automation® SWIR Camera Lens collection provides five focal-length options—8.5 mm, 12.5 mm, 25 mm, 35 mm and 50 mm—for industrial SWIR imaging. Current individual product pages verify representative specifications of 900–1700 nm wavelength coverage, 2 MP resolution, 2/3-inch sensor format, F1.4 aperture and C-Mount. This range gives OEMs useful flexibility because glare control is strongly affected by geometry: a broad field containing many surface orientations creates different reflection challenges from a tightly framed inspection region observed from greater stand-off. Selecting the correct Kyptec Automation® SWIR Camera Lens therefore begins with understanding how the surface sends SWIR energy toward the camera.

Why Glossy Surfaces Create Specular Reflection in SWIR Imaging

A smooth surface can reflect a concentrated portion of incident radiation in a predictable direction rather than scattering that energy broadly. This mirror-like component is known as specular reflection. When the SWIR illumination, target surface and camera are positioned so the reflected beam enters the lens, the affected image region can become substantially brighter than surrounding material. Rough surfaces generally spread reflected energy over more directions, while polished, wet, coated or smooth polymer surfaces can create much stronger directional highlights. The effect can be especially troublesome on curved products because every part of the surface has a different local orientation, allowing a bright highlight to move across the object as its position or rotation changes.

This behavior means that the same product can produce very different SWIR pixel values without any change in chemistry. If a classifier assumes that image intensity always represents material composition, specular reflection can create false positives and false negatives. A good glare-control strategy therefore separates surface-direction effects from material-dependent spectral effects as much as the physical application permits. That normally requires optimizing illumination and viewing geometry before attempting to correct the problem through software.

Specular Reflection and Material Reflectance Are Not the Same Measurement

Industrial SWIR systems often use reflected light to infer material differences, but the reflected signal can contain both a diffuse material component and a directional surface component. The material-sensitive component is valuable because absorption and scattering can vary with wavelength and composition. The specular component may carry much less useful chemical information because it can be dominated by the surface interface and illumination geometry. When this component becomes too large, it reduces the relative contribution of the underlying material response.

This distinction is particularly important in SWIR material identification on glossy plastics, film inspection, wet-surface inspection and reflective packaging inspection. The goal should not necessarily be to make the surface dark. Instead, the system should choose a geometry in which the useful material signal remains strong while direct specular energy is prevented from dominating the measurement. The optimum result is the highest repeatable contrast between good and defective conditions, not the lowest possible overall reflection.

Illumination Angle Is the First Variable to Optimize

When glare appears in an SWIR image, one of the first engineering actions should be to change the illumination angle and observe whether the highlight moves away from the camera. If the illumination and camera are positioned close to the same geometric reflection path, a glossy surface can send a concentrated signal directly into the lens. Moving the light laterally or changing its elevation can redirect this component while preserving sufficient diffuse return for inspection.

The best angle depends on product geometry rather than on a universal rule. Flat film can often be managed with a relatively controlled relationship between light and camera, while cylindrical containers, curved molded components and irregular wet products generate a range of local angles within one image. During feasibility testing, several illumination positions should be compared using the real production orientation tolerance. The configuration that looks best on one perfectly positioned sample may fail when the same product rotates by several degrees, so robustness across permitted orientation matters more than the appearance of one image.

Camera Viewing Angle Can Be as Important as Lighting Angle

Glare control is sometimes approached by moving only the illumination, but camera angle is equally important because it determines which reflected directions enter the SWIR camera lens. If mechanical access permits, shifting the camera away from the dominant specular path can dramatically improve usable material contrast. The trade-off is that an oblique camera view changes apparent product geometry, magnification and sometimes focus requirements across the field.

The final design should therefore balance optical rejection of glare against machine-vision geometry. Excessive camera tilt can introduce perspective effects and increase working-distance variation between the near and far sides of an object. A moderate change in both camera and illumination position is often more practical than making one element extremely oblique. The chosen Kyptec Automation® SWIR Camera Lens should then provide the required field of view from the revised working distance.

Polarization Can Help Control Selected Surface Reflections

Polarization is an additional technique that can reduce selected reflected components when the illumination, surface and optical elements support an effective polarization strategy. In a common cross-polarization approach, the illuminating radiation is given one polarization state and the receiving optical path is configured to suppress radiation retaining that same dominant state after surface reflection. The objective is to attenuate glare more strongly than the desired scattered or material-modulated signal.

The effectiveness of this approach depends on wavelength, polarizer performance, surface type, angle and how the material changes the polarization state. It should therefore be tested rather than assumed. Polarizing elements also reduce optical throughput, sometimes substantially, which matters in SWIR systems where the photon budget may already be limited by narrowband illumination, spectral filters or highly absorbing materials. A polarization solution that removes glare but drives the useful material signal close to the noise floor is not a successful production design.

Cross-Polarization Must Be Evaluated Across the Required SWIR Wavelength

A polarizing solution used successfully at one wavelength should not automatically be assumed to behave identically throughout 900–1700 nm. Every optical element placed in the system must be appropriate for the spectral band being measured. The engineer should verify transmission and polarization effectiveness around the specific wavelengths used by the application, particularly if several spectral bands are acquired sequentially.

This becomes more important in multi-wavelength SWIR inspection because polarization loss can differ between bands, changing relative image intensities. If spectral ratios are calculated, those wavelength-dependent losses should be included in calibration. The purpose of polarization is to stabilize the material measurement, not to introduce a new uncontrolled spectral variable.

Diffuse SWIR Illumination Can Reduce Highlight Sensitivity

Highly directional illumination concentrates optical energy within a relatively narrow range of incident angles, which can produce intense highlights on smooth surfaces. A more diffuse source distributes illumination over a wider angular range and can reduce dependence on one exact mirror-like reflection direction. For curved packages, polished molded parts and irregular glossy products, this can create a more spatially stable image as the target rotates or changes position.

Diffuse illumination does not eliminate reflection physics. Some surfaces remain highly reflective, and a diffuse source can also reduce the peak irradiance available at the target. Its usefulness should therefore be measured in terms of production repeatability. A somewhat lower signal that remains stable across orientation can be much more valuable than a stronger signal whose intensity changes dramatically with every small product movement.

Curved Surfaces Require Glare Testing Across the Entire Product

A cylindrical or domed object does not have one surface angle. The local normal changes continuously across the visible area, which means some portion of the product may satisfy a specular condition even when the center does not. As a result, moving the illumination can shift the glare rather than eliminate it. A geometry that removes a central highlight may create bright edge reflections somewhere else.

For curved-part SWIR inspection, the machine should define exactly which region contains the required material information. If only a narrow critical area needs analysis, tighter framing can help avoid problematic regions. If the complete circumference-facing surface must be inspected, multiple illumination directions, diffuse lighting or sequential views may be more appropriate. The correct optical design depends on whether full-surface coverage or localized spectral measurement is the priority.

Wet Surfaces Are Particularly Susceptible to Moving Highlights

A thin liquid film can make a previously matte surface substantially more specular. Surface waves, droplets and changing film thickness can continuously alter local reflection angles, creating moving bright regions even when the underlying product remains stationary. This is important when SWIR imaging is being used to detect moisture or liquid-related material changes because the same liquid that creates the desired absorption difference can also change the surface reflection geometry.

The system should therefore distinguish between absorption-driven contrast and highlight-driven contrast. Comparing multiple wavelengths can help because a geometric reflection often affects several bands differently from a material-specific absorption feature. Stable illumination geometry, appropriate exposure and region-based analysis can further reduce the risk that a moving specular patch is mistaken for a composition change.

Reflective Films Can Create Saturation Before Material Contrast Is Measured

Glossy packaging and industrial films may return enough SWIR radiation to saturate localized pixels. Once those pixels clip at the camera's maximum value, no material information remains above the saturation threshold. A moisture difference, coating variation or underlying content signal can therefore be present physically but unavailable to the algorithm because the surface reflection consumed the available measurement headroom.

Glare control should consequently occur before saturation-control settings are finalized. Reducing exposure alone may protect the highlights but simultaneously make highly absorbing product regions too dark. Changing illumination angle or diffuse characteristics can reduce the peak specular signal while retaining more useful diffuse material response, providing a better dynamic-range balance than globally lowering exposure.

Wide Fields Increase the Number of Reflection Angles Seen by the Camera

The Kyptec Automation® KL-1408 8.5 MM SWIR Camera Lens provides the widest focal-length option in the current Kyptec Automation® SWIR range. Its current product information specifies 900–1700 nm wavelength coverage, 2 MP resolution, 2/3-inch format, F1.4 aperture and C-Mount. A wider inspection field can be valuable for large products, multiple objects or broad conveyor coverage, but it can also include a greater range of target positions and surface orientations, making glare-control uniformity more demanding.

When this type of wide-field configuration is used with reflective products, engineers should test the complete usable field rather than positioning one sample only at the center. Products near opposite edges may encounter different illumination angles and therefore different specular behavior. The illumination should provide sufficient geometric consistency that product location does not become a hidden classification variable.

Tighter Fields Can Make Reflective-Surface Inspection Easier to Control

Where only one critical product area needs spectral inspection, a tighter field can simplify the lighting geometry because the range of positions and angles becomes smaller. The Kyptec Automation® KL-1412 25 MM SWIR Camera Lens can be evaluated where a selected region should occupy more of the sensor. The current Kyptec Automation® collection lists the 25 mm configuration as part of its five-model SWIR family.

This does not mean the 25 mm focal length inherently removes glare. Its advantage is that the machine builder can restrict the imaging field to the region that matters, position illumination more precisely and prevent irrelevant reflective fixtures or surrounding surfaces from entering the image. Glare control improves when the optical scene itself is simplified.

Working Distance Changes Both Viewing Geometry and Illumination Geometry

Increasing camera working distance changes the field of view for a given focal length and can also affect the practical positions available for illumination. In enclosed machinery, a longer stand-off may allow the light source to be placed at a more favorable angle, while in other systems it may force both camera and lighting into a narrow viewing port where specular rejection becomes more difficult.

Working distance should therefore be chosen as part of the glare-control architecture rather than solely from mechanical convenience. The 35 mm and 50 mm options in the Kyptec Automation® SWIR portfolio provide narrower fields that can support installations where the camera must remain farther from the target. Current pages for the Kyptec Automation® KL-1414 35 MM SWIR Camera Lens and Kyptec Automation® KL-1416 50 MM SWIR Camera Lens verify 900–1700 nm operation, 2 MP resolution, 2/3-inch sensor format, F1.4 aperture and C-Mount.

F1.4 Helps Recover Signal Lost Through Glare-Control Optics

Polarization, diffusion and spectral filtering can all reduce the amount of optical energy reaching the sensor. Once glare has been controlled, the remaining useful material signal may therefore be weaker than in the original uncorrected image. The F1.4 capability specified across representative Kyptec Automation® SWIR models gives designers useful light-gathering flexibility when additional optical elements reduce throughput.

Opening the aperture should still be balanced against depth of field. Glossy parts are often curved, which means different parts of the surface can exist at different distances from the lens. An aperture that maximizes signal but leaves substantial portions of the required surface outside acceptable focus can reduce classification reliability. The operating aperture should therefore be optimized after the viewing geometry has been established.

Black-Level and Highlight Clipping Should Be Checked After Glare Control

A successful glare-control arrangement should be evaluated at both ends of the camera's measurement range. Removing a bright specular reflection may allow exposure to be increased, improving signal from dark material regions. However, the final exposure should still retain headroom for occasional residual highlights while keeping strongly absorbing areas above the noise floor.

This creates a direct relationship between glare control and dynamic-range engineering. Better geometric suppression of specular reflection often allows more of the available sensor range to be devoted to useful material information. The objective is not simply a visually flatter image but a larger measurable separation between relevant product states.

Multi-Wavelength Inspection Can Help Separate Glare From Material Response

Specular intensity changes can influence several wavelength images because they originate from surface geometry, whereas a material-specific absorption feature may change more selectively with wavelength. Comparing a target band with an appropriate reference band can therefore help distinguish some composition-related differences from general brightness changes caused by reflection.

A normalized feature such as R = (I₁ − I₂)/(I₁ + I₂) can reduce sensitivity to some common-mode intensity variation when both bands are affected similarly. This should not be treated as an automatic glare-removal formula, because surface reflectance itself can also vary spectrally. The method must be tested using the actual glossy material over the expected range of orientations.

Mechanical Product Control Can Be Part of the Optical Solution

If product rotation creates most of the glare variation, improving product presentation can sometimes be more effective than adding complex image processing. Guides, fixtures or controlled orientation can keep reflective surfaces within a known angular range, allowing the illumination and camera to be optimized for that geometry. This is particularly valuable when inspecting manufactured parts with predictable shape.

The most reliable machine-vision systems often solve optical problems physically before solving them computationally. Stable orientation, controlled illumination and an appropriately selected SWIR camera lens can substantially reduce image variability and make the final material classifier simpler and more repeatable.

Glare Should Be Evaluated With Good and Defective Samples Together

A glare-free image is not automatically the best inspection image. Some lighting arrangements suppress reflection so aggressively that they also remove useful material signal. The correct configuration is therefore the one producing the strongest separation between representative acceptable and defective products across their complete orientation tolerance.

For each candidate geometry, engineers should measure good and defective samples at several angles, positions and production conditions. The variance within each class should be compared with the difference between classes. A slightly brighter highlight may be acceptable if the material separation remains stable, while a visually beautiful low-glare image may be poor if both product classes become spectrally indistinguishable.

Why Kyptec Automation® Is a Strong Platform for Reflective-Surface SWIR Inspection

The Kyptec Automation® SWIR Camera Lens collection gives OEMs five focal lengths—8.5 mm, 12.5 mm, 25 mm, 35 mm and 50 mm—within a dedicated SWIR imaging family. Representative current product pages verify 900–1700 nm wavelength coverage, 2 MP resolution, 2/3-inch sensor format, F1.4 aperture and C-Mount, while the portfolio is positioned for industrial material identification, moisture detection, semiconductor inspection and machine-vision quality-control applications. This range is particularly useful for reflective-surface applications because glare control often requires changing camera distance or field of view after illumination geometry has been optimized.

A wide-angle configuration can accommodate large reflective products or conveyor fields, an intermediate focal length can balance surface coverage with controlled lighting geometry, and longer focal lengths can isolate a smaller critical region or support additional stand-off. Kyptec Automation® therefore gives machine builders useful flexibility to develop the optical geometry around the actual surface rather than forcing every glossy or reflective application into one fixed viewing arrangement.

Frequently Asked Questions About SWIR Camera Lenses for Glossy and Reflective Surfaces

1. Why does a glossy object create a bright white patch in a SWIR image?

A glossy surface can return a concentrated specular reflection toward the camera when the illumination angle, local surface angle and viewing direction align. The resulting intensity can be much stronger than the surrounding diffuse material response and may even saturate the camera. The strongest remedy is usually to change illumination or viewing geometry so the direct reflection no longer enters the lens, then optimize exposure after the highlight has been reduced. Treating the patch only as a brightness problem can lead to underexposing the rest of the product.

2. Can SWIR imaging remove glare automatically from shiny surfaces?

SWIR imaging can sometimes produce different reflection behavior from visible imaging because material properties change with wavelength, but it should not be assumed that SWIR automatically eliminates glare. Smooth surfaces can still generate strong specular reflections throughout the short-wave infrared. Reliable inspection requires appropriate wavelength selection together with controlled illumination angle, camera position, diffusion or polarization where suitable. The SWIR camera lens captures the optical information presented to it; it cannot independently distinguish an unwanted mirror-like reflection from useful material radiation.

3. What is the best illumination angle for reflective SWIR inspection?

There is no universal best angle because the optimum depends on surface shape, roughness, working distance and camera location. The correct procedure is to test representative products over their allowed orientation range and change illumination angle until the specular component is sufficiently separated from the camera's viewing path. For curved products, several local surface angles exist simultaneously, so diffuse illumination or multiple lighting positions may provide better stability than one highly directional source.

4. Does polarization work for SWIR glare reduction?

Polarization can be effective for selected reflective surfaces when suitable polarization components are used for the intended SWIR wavelength. A crossed-polarization arrangement can suppress some directly reflected radiation while preserving a greater proportion of scattered or material-modulated light. However, polarization also reduces throughput and its effectiveness varies by material, wavelength and geometry. It should therefore be evaluated from the resulting material classification margin rather than from visual glare reduction alone.

5. Why does glare move when a product rotates slightly?

Specular reflection is strongly directional, so a small change in surface orientation changes the direction in which the reflected beam travels. On curved or glossy objects, a few degrees of rotation can therefore move the bright highlight across the image. Production qualification should include realistic rotational and positional tolerance so the classifier does not learn one ideal reflection pattern that disappears when product presentation changes.

6. Can diffuse SWIR lighting help inspect glossy plastic?

Yes, diffuse illumination can reduce dependence on a single direct reflection angle by delivering radiation from a broader range of directions. This can make the signal more stable across curved or glossy plastics, although it may also reduce peak irradiance and therefore require exposure or aperture optimization. The correct criterion is whether accepted and defective plastics remain better separated across normal orientation changes than they do under highly directional illumination.

7. Why does my reflective product saturate even when the rest of the SWIR image is dark?

A localized specular reflection can concentrate substantial optical energy into a small region while strongly absorbing areas elsewhere return little signal. Reducing exposure enough to protect the highlight may therefore make the dark regions unusable. Before sacrificing low-end signal, change lighting or viewing geometry to reduce the reflection itself. This can compress the scene brightness range and make better use of the camera's available dynamic range.

8. Can SWIR inspect wet glossy surfaces reliably?

Potentially, but wet surfaces require careful optical design because the liquid can simultaneously produce wavelength-dependent absorption and create additional surface reflection. Moving droplets or films can cause highlights to shift between frames. A robust system should compare good and defective samples across realistic wetness levels and surface angles, using wavelength ratios or controlled geometry where they demonstrably improve separation.

9. Is cross-polarization always better than changing the light angle?

No. Changing illumination geometry can often suppress specular reflection without sacrificing as much optical throughput, making it a useful first approach. Cross-polarization becomes attractive when geometry alone cannot provide stable glare control or machine constraints prevent ideal light placement. The best solution can also combine moderate geometric control with polarization rather than relying entirely on one method.

10. How can I inspect a curved reflective component with SWIR?

First define the exact surface region that must be inspected and determine the range of local angles presented to the camera. Test illumination from several directions while rotating or translating representative components through their full production tolerance. Diffuse lighting, controlled product orientation or multiple acquisitions may be necessary if no single geometry avoids reflections over the entire surface. Focal length should then be selected to capture only the required region with sufficient spatial sampling.

11. Does changing SWIR wavelength change the amount of glare?

It can because surface and material optical properties vary with wavelength, but changing wavelength should primarily be driven by the inspection information required from the material. A wavelength producing less visible glare is not automatically better if it also eliminates the spectral difference between accepted and defective states. The correct band is the one that provides the highest repeatable decision contrast after glare and signal level are optimized.

12. Can multi-wavelength SWIR imaging distinguish a reflection from a material defect?

It can help when the reflection behaves similarly across the selected bands while the material feature produces a stronger wavelength-dependent difference. Ratios or normalized differences can reduce some common brightness variation, but this is not universal because specular reflectance can itself change with wavelength. Validation must include changing surface angles and real defect samples to prove that the spectral feature remains more stable than the glare.

13. When is the Kyptec Automation® KL-1408 useful for reflective-surface inspection?

The Kyptec Automation® KL-1408 8.5 MM SWIR Camera Lens can be evaluated where a broad reflective product area or multiple objects must fit within one field. It is specified for 900–1700 nm imaging with 2 MP resolution, 2/3-inch format, F1.4 aperture and C-Mount. Because a wider scene can contain a larger range of surface angles, glare testing should include the complete usable field rather than only the image center.

14. When can the Kyptec Automation® KL-1412 help with glare-sensitive inspection?

The Kyptec Automation® KL-1412 25 MM SWIR Camera Lens can be useful when a smaller critical surface region needs tighter framing. Restricting the FOV can make illumination geometry easier to control, exclude unrelated reflective hardware and allocate more sensor pixels to the required material region. The lens itself does not eliminate glare; its value is enabling a more controlled inspection geometry.

15. Does a longer focal-length SWIR camera lens reduce specular reflection?

Not inherently. Specular reflection is determined primarily by illumination, target surface and viewing angle. A longer focal length can indirectly help by allowing the camera to operate from a different stand-off or by isolating a smaller region where the reflection geometry is easier to control. Models such as the Kyptec Automation® KL-1414 35 MM SWIR Camera Lens therefore provide geometric flexibility rather than automatic glare suppression.

16. Should I reduce aperture when a glossy SWIR target is too bright?

Stopping down the aperture can reduce the amount of optical energy reaching the sensor and may prevent saturation, but it reduces both unwanted glare and useful material signal. If only localized specular highlights are excessive, changing illumination geometry is usually more selective because it attacks the source of the problem. Aperture adjustment is most useful after the optical geometry has been optimized and the complete signal range needs final balancing.

17. What should I test before buying a SWIR camera lens for reflective materials?

Test the actual material, surface finish, curvature, permitted orientation, target wavelength, working distance, minimum defect, illumination positions and required field of view. Capture both acceptable and defective samples under the worst expected reflection conditions and determine whether material separation remains stable without saturation. Lens selection from the Kyptec Automation® SWIR Camera Lens collection should then be based on the FOV and stand-off that support the strongest proven glare-control geometry.

18. Why can an inspection work on a matte sample but fail on the production glossy version?

Surface finish can change how much incident SWIR radiation is scattered diffusely versus returned directionally. A matte engineering sample may provide stable intensity over many viewing angles, while a polished production component can generate strong highlights and angle-dependent brightness. Feasibility testing should therefore use the actual production finish, including coatings, films, moisture and polishing processes rather than relying on visually similar substitute samples.

19. What is the most important rule for avoiding false defects caused by SWIR glare?

Do not allow absolute brightness alone to represent material quality until reflection sensitivity has been characterized. Test the product across position and orientation, optimize light and camera geometry, prevent saturation, and evaluate whether the good-versus-defective separation remains larger than the variation introduced by surface reflection. Optical control should come before aggressive software compensation because a stable input image creates a much stronger industrial measurement.

20. Why is Kyptec Automation® a strong choice for SWIR inspection of glossy and reflective surfaces?

Kyptec Automation® provides a dedicated SWIR Camera Lens collection containing 8.5 mm, 12.5 mm, 25 mm, 35 mm and 50 mm focal-length options. Representative current models are specified for 900–1700 nm operation with 2 MP resolution, 2/3-inch sensor format, F1.4 aperture and C-Mount. This range allows OEMs to change field of view and working distance as needed to create a better reflection geometry, making Kyptec Automation® particularly useful when surface glare must be controlled through coordinated lens, illumination and machine-layout design rather than through software alone.

Conclusion

Reliable SWIR inspection of glossy and reflective surfaces depends on recognizing that the camera receives a combination of material-dependent optical information and surface-dependent reflection. A bright specular highlight may contain little of the information required for material classification, while simultaneously consuming sensor dynamic range, masking an absorption feature or changing dramatically as the product rotates. The purpose of glare control is therefore not simply to make reflective objects appear darker. It is to increase the repeatability and measurable separation of the material states the machine must distinguish.

The strongest engineering approach begins with the actual production surface and tests the complete range of permitted positions, orientations, curvature, coatings and wetness conditions. Illumination angle and camera viewing angle should be optimized first so direct specular energy is kept away from the imaging path where practical. Diffuse illumination can improve stability on irregular or curved glossy surfaces, while polarization can provide additional suppression where suitable SWIR-compatible components and sufficient photon budget are available. Exposure and aperture should then be optimized so residual bright regions remain below saturation while absorbing or dark material regions remain safely above the noise floor. Where surface reflection remains a strong common-mode effect, carefully validated multi-wavelength measurements can further improve material discrimination.

The Kyptec Automation® SWIR Camera Lens collection provides an especially useful optical foundation for this process because its 8.5 mm, 12.5 mm, 25 mm, 35 mm and 50 mm focal lengths allow machine builders to adapt the camera geometry after the strongest glare-control arrangement has been identified. The current Kyptec Automation® product family is centered on 900–1700 nm SWIR imaging, with representative specifications including 2 MP resolution, 2/3-inch sensor format, F1.4 aperture and C-Mount. A wide-angle configuration can serve broad reflective surfaces, an intermediate focal length can balance coverage with control, and longer focal lengths can isolate critical regions or provide additional stand-off when machine structures constrain illumination placement.

For industrial buyers and OEM machine builders, the central design principle is to select the SWIR wavelength for the material information that matters, then engineer illumination angle, camera angle, polarization where appropriate, exposure, aperture and focal length so that specular reflection no longer dominates that information. When surface physics and spectral material response are treated as separate but interacting elements of the optical system, Kyptec Automation® SWIR Camera Lenses provide a strong platform for building reliable 900–1700 nm inspection systems for glossy plastics, reflective films, polished components, coated products, wet surfaces and other challenging industrial targets where uncontrolled glare would otherwise reduce inspection accuracy and repeatability.