How to Specify a Line Scan Camera Lens for an OEM Machine: Complete RFQ and Buying Checklist Before Purchase

Buying a line scan camera lens for an OEM machine should begin with an engineering specification, not with a focal-length guess. A request such as “we need an 8K line scan lens” or “please quote a 35 mm line scan lens” is usually incomplete because it does not explain the sensor length, pixel pitch, required scan width, smallest defect, available working distance, dimensional accuracy, machine speed or mounting requirement. The same focal length can behave very differently when used with a different sensor or inspection width, while the same 8K camera can require different optics depending on the physical sensor format and the production defect that must be resolved. For an OEM, system integrator or machine builder, a well-prepared RFQ can therefore shorten lens selection time, reduce prototype iterations and avoid expensive optical redesign after the mechanical structure has already been finalized.

The Kyptec Automation® Line Scan Camera Lens collection currently provides 25 mm, 35 mm and 50 mm focal-length options intended for 4K and 8K line-scan camera applications. Kyptec Automation® also provides a dedicated OEM Orders page for bulk industrial requirements and directs customers with OEM enquiries to share their application needs with the company. For buyers searching for line scan camera lens supplier, 8K line scan lens for OEM machine, line scan lens selection guide, line scan camera lens specifications, industrial line scan lens for machine vision, or how to choose a line scan lens before purchase, the most important step is to convert the machine requirement into a complete optical specification.

Start the RFQ With the Actual Inspection Task

The first information in a line scan camera lens RFQ should describe what the machine is expected to inspect. A web inspection machine, printing inspection machine, textile inspection machine, battery electrode inspection system, metal strip inspection machine and electronics inspection platform may all use line-scan imaging, but the optical requirements can differ considerably.

The RFQ should state the material being inspected, the required scan width, the smallest defect that matters, whether the system performs only defect detection or also dimensional measurement, and whether the material position changes during production. This gives the lens supplier a practical context for evaluating the optical geometry.

Kyptec Automation® existing line-scan guidance identifies continuous inspection applications such as printing, packaging, textiles, electronics and metal processing as typical uses for line-scan imaging, with requirements that include high resolution, low distortion and consistent full-width imaging.

Specify the Camera Pixel Count and Pixel Pitch

An OEM should never send only “4K” or “8K” as the camera specification. The RFQ should contain both the number of active pixels and the pixel pitch.

Pixel pitch determines how finely the optical image is sampled at the sensor. A 4K sensor with 7 μm pixels and an 8K sensor with 3.5 μm pixels can have a similar physical sensor length while demanding very different optical resolution. The 8K system places much greater demands on fine-detail transfer because the pixels are smaller.

Kyptec Automation® publishes the current line scan camera lens range for 4K 7 μm and 8K 3.5 μm configurations, giving OEM buyers a useful reference when selecting optics for these common resolution classes.

Include the Physical Sensor Length

Physical sensor length should be included separately in the RFQ because it determines how much image coverage the lens must provide.

A simple estimate is:

Sensor Length = Active Pixels × Pixel Pitch

For example, approximately 8,192 pixels multiplied by 3.5 μm gives an active length of around 28.7 mm. The lens must provide usable image coverage across that complete sensor length while maintaining acceptable brightness and resolution toward both ends.

This specification is essential for avoiding vignetting, dark edges and reduced edge performance. It also helps the supplier determine whether the requested lens format is genuinely compatible with the camera rather than mechanically mountable only.

Define the Required Field of View or Scan Width

The OEM must specify how much object width the camera needs to see in one scan line. This may be described as field of view, scan width or inspection width.

For example, a flexible packaging machine may need 650 mm coverage, while a metal strip inspection frame may need 1,200 mm. Those two applications cannot be evaluated from camera resolution alone because the same sensor spreads its pixels across very different physical widths.

If web wander or lateral movement is possible, the RFQ should state the maximum material width plus the required safety margin. The lens should cover the real operating envelope, not just the nominal product width.

The Kyptec Automation® line-scan range provides three focal-length options, allowing OEMs to choose different optical geometries according to scan width and available stand-off.

State the Smallest Defect That Must Be Detected

The smallest required defect is one of the most important purchasing specifications because it defines the actual useful resolution target.

Instead of writing “high-resolution inspection,” the OEM should state something measurable, such as a 0.2 mm scratch, 0.3 mm pinhole, 0.5 mm coating void or a defined print feature. The engineer can then calculate how many sensor pixels represent that defect at the required field of view.

If the smallest defect occupies too few pixels, changing the focal length alone may not solve the system. The inspection width, camera resolution or system architecture may need to be reconsidered.

This is why a technically strong RFQ should connect defect size, sensor resolution and inspection width.

Specify the Available Working Distance

Working distance is often constrained by machine geometry. Rollers, illumination assemblies, safety covers, moving mechanisms and product handling may limit where the camera can be mounted.

The RFQ should therefore state either the required working distance or an acceptable range rather than asking for a focal length independently.

A shorter focal length can generally provide a wider field from a shorter stand-off, while a longer focal length may suit a machine that allows more distance between lens and object. The relationship must be calculated using the sensor and field requirements.

This is where the three-model Kyptec Automation® range creates useful flexibility for OEM machine design.

When the Kyptec Automation® KL-1402 Is a Relevant Candidate

The Kyptec Automation® KL-1402 25 MM Line Scan Camera Lens is the shortest focal-length model in the current portfolio and is intended for 4K and 8K line-scan configurations.

It can be considered when an OEM needs comparatively wide coverage within a compact machine layout. Typical examples include compact web inspection machines, textile inspection stations, printing inspection systems and flexible material inspection platforms where mechanical stand-off is limited.

The RFQ should still include the exact sensor length, field width and working-distance constraint so that a 25 mm requirement is technically justified rather than assumed.

Specify Whether Measurement Accuracy Matters

A defect-detection machine and a precision measurement machine can have very different distortion requirements.

If the line scan system will measure web width, strip width, coating position, registration marks, edge position or defect coordinates, the RFQ should state the required dimensional tolerance. “Low distortion” is not precise enough for a serious metrology requirement.

The buyer should specify, for example, whether dimensional accuracy is required within ±0.5 mm, ±0.1 mm or another application-specific tolerance. Kyptec Automation® positions its line scan lenses around minimal distortion and consistent image performance, characteristics that are relevant where both inspection and measurement are required.

Provide the Required Mount and Mechanical Constraints

Mechanical compatibility should be confirmed before purchase. The current Kyptec Automation® line scan lens models use an M42 × 1 mount, so the OEM should verify that the intended camera interface is compatible or that the machine design provides the correct mechanical arrangement.

The RFQ should also state available lens diameter, maximum allowable lens length, surrounding mechanical clearance and whether locking or repeatable mounting is required.

These details become especially important for OEMs producing multiple machines because an optical design that works in one prototype must also fit reliably into repeat production assemblies.

Define the Aperture and Light Requirement

The RFQ should describe whether the machine operates at high speed, whether short exposure is required and whether the object has significant vertical variation.

A wide aperture allows more light to reach the sensor, while a smaller aperture can improve depth tolerance but reduces available light. The current Kyptec Automation® Line Scan Camera Lens range provides manual iris adjustment, allowing the production aperture to be optimized according to the application.

This is particularly important for high-speed web inspection where available exposure time may be short. The OEM does not need to specify one exact F-number before optical testing, but it should explain the expected operating conditions.

State the Maximum Production Speed

Production speed does not determine focal length directly, but it can affect exposure, line rate and signal requirements.

An OEM designing a machine for 300 metres per minute may require substantially different exposure margin from a machine operating at 30 metres per minute, even if the scan width and focal length are identical.

The RFQ should therefore state maximum production speed when the machine will inspect continuously moving material. This helps ensure that lens aperture flexibility and optical resolution are evaluated under realistic production conditions rather than only on a stationary test target.

Specify Expected Object Height or Web Position Variation

If the material can move vertically, the OEM should state how much variation is expected around the nominal focus plane.

Flexible film, textile, paper and thin sheet can fluctuate because of web tension, roller geometry or material characteristics. This movement affects focus and depth-of-field requirements.

A buyer who simply states a nominal 500 mm working distance but omits ±5 mm of web movement may receive an optical recommendation that appears correct geometrically but does not provide sufficient focus tolerance in production.

Include Center-to-Edge Performance Requirements

For long line-scan sensors, the smallest defect should remain detectable across the complete useful width.

The RFQ should therefore state whether defects near the outer material edges are just as important as defects near the centre. This helps distinguish applications that require excellent full-field resolution from those where only a narrow central region is used.

Kyptec Automation® line scan camera lens content emphasizes uniform imaging and stable performance across the scan line, which is especially relevant to full-width inspection systems.

Where the Kyptec Automation® KL-1404 Fits in an OEM Specification

The Kyptec Automation® KL-1404 35 MM Line Scan Camera Lens provides an intermediate focal-length option between the 25 mm and 50 mm models. It is part of the same current 4K/8K line-scan portfolio.

For printing inspection machines, battery electrode inspection equipment, medium-width web machines or other OEM platforms with moderate working distance, 35 mm can be evaluated where the calculated geometry falls between the wider 25 mm arrangement and longer 50 mm stand-off.

This is why the RFQ should begin with geometry rather than model selection. A technically complete RFQ allows the appropriate model to emerge from the requirement.

Specify the Expected Quantity and OEM Production Plan

An OEM lens purchase is often different from a one-piece laboratory purchase because repeatability, supply planning and bulk procurement become important.

The buyer should state whether the requirement is for prototype evaluation, pilot production or an expected annual quantity. Kyptec Automation® has a dedicated OEM Orders page for industrial bulk requirements and currently invites customers with shipments of 10 units or more to connect with its team.

For machine builders, sharing estimated quantity also helps align product selection with long-term production rather than treating the first prototype lens as an isolated purchase.

Longer Working Distance and the Kyptec Automation® KL-1406

The Kyptec Automation® KL-1406 50 MM Line Scan Camera Lens is the longest focal-length option currently listed in the collection and is intended for 4K and 8K line-scan camera use.

It can be evaluated for larger inspection frames, metal strip inspection machines and other systems where greater camera-to-object distance is mechanically convenient. Its wider maximum aperture compared with the shorter models can also provide useful exposure flexibility where the 50 mm geometry is appropriate.

The buyer should still send exact scan width and working distance because choosing 50 mm only because a machine is physically large is not sufficient engineering justification.

What a Complete Line Scan Camera Lens RFQ Should Contain

A strong RFQ can be expressed in one dense technical specification rather than a long discussion. It should identify the inspection material and machine type, camera resolution, pixel pitch, active sensor length, required scan width, smallest defect, nominal working distance, permissible working-distance range, required dimensional accuracy, maximum production speed, expected object-height variation, camera mount, available mechanical space, desired quantity and whether full-field defect detection is required.

Providing these parameters allows Kyptec Automation® to evaluate the Line Scan Camera Lens collection against the real machine geometry and helps the OEM move from a general enquiry to a technically meaningful purchasing discussion. The company's OEM Orders page and Contact Us page provide dedicated channels for industrial and custom enquiries.

Practical OEM Example: Wide Web Inspection Machine

Suppose an OEM is building an 8K web inspection machine for a 900 mm material width. The camera has 3.5 μm pixels, the smallest required defect is 0.3 mm, available working distance is approximately 450–650 mm, production speed is high and defects must remain detectable at both web edges.

This RFQ is already much more useful than “need 8K line scan lens.” The supplier can now evaluate physical sensor coverage, object-side sampling, approximate focal-length requirement, aperture needs and full-field performance.

If the machine geometry is compact, the 25 mm option may be investigated; if the working distance is moderate, the 35 mm option may fit more naturally; if the machine allows greater stand-off, the 50 mm option can be considered. The correct choice follows the calculation.

Practical OEM Example: Precision Metal Strip Measurement

Now consider an OEM designing a system that must inspect an 800 mm metal strip and report edge position and strip width within a defined tolerance. In this case, defect size alone is not enough information.

The RFQ should also specify dimensional accuracy, expected strip movement, calibration method and required defect-coordinate accuracy. Because measurement is involved, low and predictable distortion becomes a more important selection criterion.

A complete RFQ therefore changes not only which focal length may be appropriate but also what optical characteristics require validation before the lens is accepted.

Frequently Asked Questions About Specifying a Line Scan Camera Lens for OEM Purchase

1. What specifications should I send when asking for a line scan camera lens quotation?

Send camera pixel count, pixel pitch, sensor length, inspection width, smallest defect, working distance, maximum production speed, required measurement accuracy, camera mount and expected quantity. This allows the supplier to evaluate the lens technically rather than providing a generic focal-length quotation.

2. Is saying “I need an 8K line scan lens” enough for an RFQ?

No. 8K describes pixel count but does not define physical sensor length, pixel pitch, field of view, working distance or defect size. A technically useful RFQ should provide the full sensor and machine geometry.

3. Should I choose focal length before contacting the lens supplier?

Only if the optical geometry has already been calculated. In many OEM projects it is better to provide sensor size, scan width and working-distance constraints and allow the focal-length choice to follow from those parameters.

4. Why does the supplier need my smallest defect size?

Because smallest defect determines the required object-side resolution. A lens can cover the full inspection width while still being unsuitable if the required defect occupies too few pixels or the optical system cannot preserve enough fine-detail contrast.

5. Why should an OEM specify pixel pitch instead of only 4K or 8K?

Pixel pitch determines how finely the sensor samples the image and influences the optical resolution requirement. An 8K sensor with 3.5 μm pixels is much more demanding optically than a lower-density configuration even when physical sensor length is similar.

6. Should the RFQ include maximum or normal working distance?

Ideally include the nominal distance and the acceptable mechanical range. This gives the lens supplier flexibility to evaluate whether another focal length can produce a better optical layout while still fitting the machine.

7. Do I need to specify line speed when buying a lens?

For high-speed continuous inspection, yes. Line speed influences exposure and signal requirements even though it does not directly determine focal length. Providing maximum production speed helps evaluate whether adequate light and aperture margin will be available.

8. What should I specify if the web moves vertically during production?

State the expected height variation around the nominal inspection plane. This helps evaluate aperture and depth-of-field requirements so the selected lens is not optimized only for one perfect focus position.

9. Should dimensional accuracy be included in the lens RFQ?

Yes whenever the machine measures width, edges, registration or defect coordinates. Required tolerance determines how important distortion control and calibration stability become.

10. Why does the lens supplier need active sensor length?

Active sensor length determines how much image field the lens must cover. Without it, compatibility cannot be evaluated reliably from resolution labels alone.

11. Is the same RFQ suitable for prototype and mass-production orders?

The optical parameters may be the same, but the commercial information should differ. For OEM production, include expected quantity, production schedule and whether the prototype lens will become a standard machine component. Kyptec Automation® provides a dedicated OEM Orders route for bulk industrial requirements.

12. Should I mention if defects near the web edges are important?

Yes. Full-field inspection can impose stricter optical requirements than centre-only inspection. If the smallest defect must be detected equally near both material edges, state this clearly in the RFQ.

13. Which Kyptec Automation® model should I request for a new OEM machine?

Do not begin from the model unless the geometry is already known. The current collection includes Kyptec Automation® KL-1402 25 MM, Kyptec Automation® KL-1404 35 MM and Kyptec Automation® KL-1406 50 MM options for 4K and 8K line-scan systems. The correct model should be selected after matching sensor length, FOV and working distance.

14. Can one line scan lens model be standardized across several OEM machines?

Potentially, if the machines have sufficiently similar sensor format, FOV and working-distance requirements. Standardization can simplify procurement and assembly, but it should not force an unsuitable optical geometry onto a machine simply to reduce part numbers.

15. What mechanical information should I send before buying a line scan camera lens?

Include mount type, available diameter and length, camera interface, mechanical clearance and any focus-locking or assembly constraints. Mechanical compatibility should be confirmed before the OEM enclosure and mounting brackets are finalized.

16. Where can an OEM submit a line scan camera lens requirement to Kyptec Automation®?

OEM buyers can review the Kyptec Automation® Line Scan Camera Lens collection, use the dedicated OEM Orders page for bulk requirements, or submit application requirements through the Contact Us page. Kyptec Automation® specifically provides OEM and industrial enquiry channels on its website.

Conclusion

A well-specified line scan camera lens RFQ can prevent many of the most common OEM optical mistakes before the machine reaches prototype assembly. The buyer should not begin with “25 mm,” “35 mm,” “50 mm,” “4K” or “8K” as isolated requirements. A professional specification should connect camera pixel count, pixel pitch, physical sensor length, inspection width, smallest defect, working distance, measurement accuracy, production speed, web-height variation, mechanical interface and expected production quantity.

Kyptec Automation® offers a focused Line Scan Camera Lens portfolio containing 25 mm, 35 mm and 50 mm options for modern 4K and 8K line-scan imaging, alongside a dedicated OEM Orders facility for industrial buyers and machine manufacturers. This focused portfolio can be especially useful for OEMs because different machine geometries can be evaluated within one dedicated line-scan lens family rather than treating every new project as an unrelated optical platform.

For web inspection machines, printing inspection systems, textile inspection machines, battery electrode lines, metal strip inspection equipment and other continuous industrial systems, the strongest purchasing decision begins with a complete engineering RFQ. Defining the real inspection requirement first makes it much easier to select a Kyptec Automation® line scan camera lens that fits not only the camera, but the complete machine, production environment and long-term OEM manufacturing plan.