Who Is This 35mm Line Scan Lens Designed For?
This lens is suitable for machine vision system integrators, automation equipment manufacturers and factory vision engineers building close-range line scan inspection systems.
It is a practical candidate when the project requires:
- A 4K line scan camera with approximately 7µm pixels
- An active line sensor length within the Ø32mm image circle
- A 35mm focal length with 0.30X-0.70X magnification
- Short working distances from approximately 63mm to 123mm
- Ultra-low distortion for width, edge, pattern and circuit inspection
- M42, M72 or F-Mount mechanical integration
Why Use a Higher-Magnification Line Scan Lens?
A line scan camera captures one row of pixels at a time while the object or camera moves. This makes it possible to build a continuous high-resolution image of moving products, rotating components or long surfaces.
The higher magnification configurations of the PMS-LLA05-3528M allow smaller features to occupy more line-sensor pixels than lower-magnification line scan lenses. This helps improve the visibility of fine circuit traces, narrow edges, small surface defects and detailed patterns.
- Fine PCB and circuit trace inspection
- Precision electronic component inspection
- Small scratches, dents and contamination detection
- Narrow-part edge and width inspection
- Surface texture and color-detail analysis
- High-speed close-range production inspection
Ø32mm Image Circle and 7µm Camera Compatibility
The PMS-LLA05-3528M supports a maximum Ø32mm image circle and is specified for 7µm line scan cameras.
A typical 4096-pixel line sensor with 7µm pixels has an active line length of approximately 28.7mm. This fits within the specified image circle and provides coverage margin for alignment and sensor geometry.
Final compatibility should still be confirmed with the exact camera model, active line length, mount and required edge-image quality.
Magnification, Working Distance and Line Field of View
| Reference Magnification | Working Distance | Conjugate Distance | Approx. Line FOV with 28.7mm Sensor |
|---|
| 0.30X | 123 mm | 202 mm | Approx. 95.6 mm |
| 0.50X | 84 mm | 169 mm | Approx. 57.3 mm |
| 0.70X | 63 mm | 155 mm | Approx. 41.0 mm |
The approximate object-side line field of view is calculated by dividing the active line-sensor length by optical magnification. Actual usable coverage depends on camera alignment, focus position, image-quality requirements and mechanical installation.
Ultra-Low Distortion and Uniform Line Imaging
The specified distortion is below 0.03%, helping reduce geometric error in edge detection, width inspection, PCB trace analysis and pattern comparison.
Relative illumination is specified at 65%. Uniform line lighting, exposure time, object speed and mechanical alignment remain important for consistent brightness across the full line.
For measurement tasks where object-height variation must not affect magnification, a telecentric line scan optical system should be evaluated.
Mount Options and Mechanical Integration
The source specification lists M42, M72 and F-Mount interface options. The mechanical drawing uses a compact lens-body reference with an optical length of approximately 63.6 ± 5.0mm.
- Focal length: 35mm
- Aperture range: F2.8-F16
- Maximum image circle: Ø32mm
- Resolution: 7µm
- Distortion: <0.03%
- Relative illumination: 65%
- Mount options: M42 / M72 / F-Mount
The exact flange, adapter and installation dimensions should be confirmed using the selected camera and mount configuration before production approval.
Typical Line Scan Applications
- Fine PCB defect and circuit trace inspection
- Electronic component and lead-frame inspection
- Small scratches, dents and contamination detection
- Surface texture, color and coating-detail inspection
- Precision edge and narrow-width inspection
- Printing and micro-pattern quality inspection
- Small-area continuous surface inspection
- Automated close-range production-line imaging
When This Lens Is a Good Fit
- Your system uses a 4K line scan camera with approximately 7µm pixels
- The active line length is within the Ø32mm image circle
- The required magnification is 0.30X, 0.50X or 0.70X
- The installation can accommodate a 63-123mm working distance
- Your application requires a small line field and more image detail
- M42, M72 or F-Mount integration is suitable
When to Consider Another Optical Solution
- The active line length exceeds the Ø32mm image circle
- The pixel size is significantly smaller than 7µm and higher optical resolution is required
- The available working distance is longer than the intended close-range configurations
- The inspection requires a much wider object-side line field of view
- Object-height variation must not affect magnification
- The project requires a telecentric line scan lens or a larger-format interface
Information Required for Line Scan Lens Selection
To confirm whether the PMS-LLA05-3528M is suitable, please provide:
- Line scan camera model
- Pixel count and pixel size
- Active line-sensor length
- Required object-side line field of view
- Available working distance
- Line rate and object movement speed
- Smallest defect or feature to detect
- Required width or positioning accuracy
- Lighting method and object surface
- Camera mount and available installation space
Manufacturer-Direct Optical and Application Support
POMEAS provides manufacturer-direct communication for camera-lens matching, magnification selection, working-distance review, mount confirmation, lighting coordination and sample evaluation.
- Review of active line length, pixel size and image-circle compatibility
- Selection of magnification, line field of view and working distance
- Support for M42, M72 and F-Mount integration
- Coordination of line lighting and exposure conditions
- Sample testing and compatibility verification
- Technical support for repeat-order automation projects
Reduce Selection Risk Before Ordering
Selecting a line scan lens by focal length alone may result in insufficient sensor coverage, an incorrect line field of view, unsuitable working distance or inadequate optical sampling.
Before quotation, POMEAS can review the camera model, active sensor length, pixel size, required line field of view, magnification, working distance and smallest defect to confirm whether this lens is a suitable option.
Frequently Asked Questions
Can this lens support a 4K line scan camera?
Yes. The lens is designed for 4K line scan imaging and is specified for cameras with approximately 7µm pixels and an active line length within the Ø32mm image circle.
What line field of view can the lens provide?
With a 28.7mm active line, the approximate line fields are 95.6mm at 0.30X, 57.3mm at 0.50X and 41.0mm at 0.70X.
What mount options are available?
The source specification lists M42, M72 and F-Mount options. Confirm the exact camera flange and adapter before ordering.
Is this an ultra-low-distortion line scan lens?
Yes. The specified optical distortion is below 0.03%.
Is it suitable for precision measurement?
It can support width, edge and calibrated inspection tasks. If object-height variation must not affect magnification, a telecentric line scan solution should be evaluated.
Request Line Scan Lens Selection Support
Send POMEAS your camera model, active line length, pixel size, required line field of view, working distance, line rate and inspection target. The optical and application team can help verify coverage, magnification and installation suitability before quotation.