16mm 2/3-Inch 10MP VIS-NIR C-Mount Lens | POMEAS

16mm 10MP VIS-NIR C-Mount Lens for 2/3-Inch Cameras

The POMEAS PMS-LFEHH-1628M(B) is a 16mm fixed focal FA lens designed for C-mount machine vision cameras with sensors up to 2/3 inch. It is rated for 10MP imaging and covers a specified wavelength range of 420-1000 nm, allowing it to be considered for visible-light and selected near-infrared inspection systems.

Compared with shorter 8mm or 12mm lenses used with the same camera and working distance, the 16mm focal length provides a narrower field of view and places more camera pixels across a smaller inspection region. The lens also offers an F2.8-F16 manual iris, a focusing range from 0.15 m to infinity, and published distortion data for 2/3-inch, 1/2-inch, and 1/3-inch sensor formats.

Typical applications include component inspection, label and code reading, assembly verification, part localization, and visible or near-infrared contrast inspection.

Key Features

10MP Imaging for Detailed Industrial Inspection

The PMS-LFEHH-1628M(B) is rated for 10MP machine vision imaging.

This makes it suitable for inspection systems that require more detail than lower-resolution general-purpose lenses. However, lens compatibility should not be determined by megapixel count alone. The camera sensor dimensions, pixel size, required field of view, and smallest detectable feature must also be reviewed.

Two 10MP cameras can have different sensor sizes and pixel pitches, creating different optical resolution requirements.

Supports Sensors up to 2/3 Inch

The lens supports camera sensors up to the specified 2/3-inch format with an 11 mm active image size.

The product sheet also provides angle-of-view, object-size, distortion, and field-of-view data for 1/2-inch and 1/3-inch sensors. Smaller sensors use a reduced central portion of the lens image and therefore capture a narrower field of view at the same working distance.

Sensors larger than 2/3 inch should not be used unless POMEAS confirms sufficient image-circle coverage and acceptable edge performance.

16mm Focal Length for a More Concentrated Field of View

The 16mm focal length provides a narrower inspection area than an 8mm or 12mm lens when the same sensor and working distance are used.

This can help:

• Place more camera pixels on a smaller component or feature
• Reduce unnecessary background in the image
• Inspect individual labels, connectors, terminals, or assembly regions
• Maintain a longer camera-to-object distance for the same field of view
• Improve feature visibility when a shorter focal length captures too much area

A shorter focal-length lens should be selected when the required object area cannot fit into the 16mm field of view.

420-1000 nm Wavelength Range

The specified wavelength range covers visible light and part of the near-infrared spectrum.

This allows the lens to be considered for systems using white, red, blue, green, or selected near-infrared illumination within the stated range. Different wavelengths may help improve contrast between materials, printing, coatings, contamination, or surface features.

The specification does not guarantee identical focus, transmission, or resolution at every wavelength between 420 and 1000 nm. Applications using a specific narrow-band wavelength should be tested with the actual camera, light source, and optical filter.

Published Distortion Data

The product sheet provides the following distortion values:

• 2/3-inch sensor: 0.23% at y = 5.5 mm
• 1/2-inch sensor: 0.15% at y = 4.0 mm
• 1/3-inch sensor: 0.08% at y = 3.0 mm

These values are relevant for feature positioning, edge detection, part localization, and calibrated image measurement.

Published lens distortion should not be treated as guaranteed system accuracy. The complete camera, lens, working distance, mounting structure, calibration method, and image-processing software must be validated against the required tolerance.

0.15 m to Infinity Focusing Range

The lens has a published focusing range from 0.15 m to infinity.

This allows it to be used in both compact inspection stations and systems requiring longer camera installation distances. The exact mechanical reference point used for the focusing distance should be confirmed when installation clearance is tightly controlled.

For a 100 mm working distance, the supplied table specifies the use of a 1 mm extension ring.

F2.8-F16 Manual Iris

The adjustable F2.8-F16 iris allows the system integrator to balance brightness, exposure time, and depth of field.

Opening the iris allows more light to reach the sensor and may support shorter exposure times. Closing the iris can increase depth of field when the inspection object has moderate height variation, although more illumination may then be required.

The final aperture should be selected together with the camera exposure, object speed, and lighting intensity.

Compact Ø29 mm C-Mount Housing

The dimension drawing specifies a maximum outer diameter of Ø29 mm.

The compact housing helps reduce interference with camera brackets, lighting, protective covers, and nearby automation components. Mechanical clearance should still be checked around the manual focus and iris controls before installation.

Technical Specifications

Model: PMS-LFEHH-1628M(B)
Lens Type: Fixed focal machine vision FA lens
Resolution Rating: 10MP
Focal Length: 16 mm
Maximum Sensor Format: 2/3 inch
Active Image Size: 11 mm
Wavelength Range: 420-1000 nm
Aperture Range: F2.8-F16
Focusing Range: 0.15 m to infinity
Camera Mount: C-Mount
Filter Thread: M27 × 0.5 mm
Back Focal Length in Air: 8.63 mm
Focus Adjustment: Manual
Iris Adjustment: Manual
Operating Temperature: -20°C to +60°C
Maximum Outer Diameter: Ø29 mm

Angle of View

2/3-Inch Sensor

Diagonal: 37.9°
Horizontal: 30.7°
Vertical: 23.3°

1/2-Inch Sensor

Diagonal: 28.1°
Horizontal: 22.6°
Vertical: 17.1°

1/3-Inch Sensor

Diagonal: 21.2°
Horizontal: 17.0°
Vertical: 12.8°

At the same working distance, a smaller sensor captures a narrower scene because it uses a smaller central area of the lens image.

Reference Field of View

The following values are taken from the supplied product sheet.

These figures are reference values from the product data. Final field of view should be confirmed using the actual camera sensor dimensions, mechanical working distance, focusing position, and extension-ring configuration.

Camera and Sensor Compatibility

The PMS-LFEHH-1628M(B) is designed for C-mount cameras with sensors up to 2/3 inch.

It can also be used with compatible 1/2-inch and 1/3-inch cameras. When used with a smaller sensor, the lens provides a narrower field of view at the same working distance.

Before confirming compatibility, check:

• Camera model
• Active sensor width and height
• Sensor optical format
• Camera resolution
• Pixel size
• C-mount interface
• Flange and adapter configuration
• Camera housing dimensions
• Required optical filter
• Illumination wavelength
• Available installation space

The 10MP lens rating does not guarantee compatibility with every 10MP camera. Small-pixel cameras can place higher resolving demands on the lens than larger-pixel cameras with the same total resolution.

Field of View and Working Distance Guidance

The actual field of view depends on:

• Lens focal length
• Active camera sensor dimensions
• Working distance
• Extension-ring thickness
• Focusing position
• Camera aspect ratio

For the same camera:

• Increasing the working distance increases the visible object area.
• Reducing the working distance decreases the visible object area.
• A 16mm lens captures a narrower scene than a 12mm lens.
• A larger sensor captures a wider scene than a smaller sensor.
• Adding an extension ring changes the focusing range and magnification.

The 16mm model is suitable when a 12mm lens captures more area than required and the inspection target needs more camera pixels.

For selection confirmation, provide:

• Camera model
• Sensor size
• Camera resolution
• Pixel size
• Available working distance
• Required horizontal and vertical field of view
• Smallest inspection feature
• Required inspection accuracy
• Illumination wavelength

Recommended Applications

Electronic Component and Connector Inspection

The 16mm focal length can place more camera pixels on connectors, terminals, switches, electronic components, and defined PCB regions than a shorter focal-length lens used at the same distance.

Application boundary: Fine solder defects, narrow circuit traces, and microscopic features must be checked against the actual object-side pixel resolution.

Label, Barcode, and Character Inspection

The lens may be used for serial numbers, labels, printed characters, date codes, and machine-readable codes.

Its narrower field of view can provide more pixel coverage on a label or code than an 8mm or 12mm lens when the camera and working distance remain unchanged.

Application boundary: Barcode module size, character height, object speed, exposure time, and illumination must be confirmed.

Assembly and Part-Presence Verification

The PMS-LFEHH-1628M(B) can support inspection of fasteners, clips, connectors, seals, inserted components, and assembly completeness.

Application boundary: A shorter focal length may be required when several widely spaced assembly areas must be captured in one image.

Part Positioning and Robot Guidance

The published distortion data can support calibrated detection of edges, reference marks, holes, and part orientation.

Application boundary: A conventional FA lens does not maintain constant magnification when object height changes. Telecentric or 3D imaging may be required for height-sensitive positioning.

Visible and Near-Infrared Inspection

The 420-1000 nm specification allows the lens to be evaluated for visible-light and selected near-infrared inspection.

Near-infrared illumination may improve contrast for certain materials, coatings, contamination, printing, or subsurface features.

Application boundary: Camera sensitivity, filter transmission, focus shift, and image quality must be tested at the actual operating wavelength.

Selection Notes

Choose This 16mm Model When

• The camera sensor is 2/3 inch or smaller
• A 10MP lens rating is required
• The camera uses a C-mount interface
• A moderate-to-narrow field of view is needed
• A 12mm lens captures more area than required
• More camera pixels are needed on a smaller feature
• Visible or near-infrared illumination within 420-1000 nm is planned
• The available focusing distance is 0.15 m or greater
• Published distortion and field-of-view data are needed for evaluation

Choose a Shorter Focal Length When

• A wider object or conveyor area must fit into one image
• Several inspection regions must be captured simultaneously
• The camera installation distance is limited
• The 16mm field of view is too narrow
• Pixel concentration on small features is less important

Choose a Longer Focal Length When

• The inspection region is smaller
• More camera pixels are required on a small feature
• The camera can be installed farther from the object
• The target occupies only a small portion of the 16mm image

When a Standard FA Lens Is Usually Sufficient

A conventional FA lens may be suitable for:

• Presence and absence inspection
• Label and code reading
• Assembly verification
• Surface inspection
• Component-position checks
• Robot guidance
• Packaging inspection
• Calibrated edge detection

When to Use a Telecentric Lens

Consider a telecentric lens when:

• Dimensional measurement accuracy is the main objective
• Object height changes during inspection
• Magnification must remain stable at different depths
• Perspective error cannot be accepted
• Edge position must remain consistent
• The required tolerance is too strict for a conventional FA lens

When This Lens May Not Be Suitable

The PMS-LFEHH-1628M(B) may not be suitable when:

• The camera sensor is larger than 2/3 inch
• The camera does not have a compatible C-mount interface
• The required field of view is wider than the 16mm lens provides
• The required inspection area is very small and needs a longer focal length
• The focusing distance is shorter than the approved lens and extension-ring configuration
• Strict dimensional measurement is required without calibration
• Object-height variation creates unacceptable perspective error
• Identical optical performance across the complete 420-1000 nm range must be guaranteed
• Motorized focus or motorized iris control is required

FAQ

Can the PMS-LFEHH-1628M(B) be used with a 2/3-inch camera?

Yes. The lens is specified for sensors up to 2/3 inch and provides published field-of-view, angle-of-view, object-size, and distortion data for this format.

Can it be used with 1/2-inch or 1/3-inch sensors?

Yes. The product sheet provides optical data for both sensor formats. A smaller sensor captures a narrower field of view at the same working distance.

What field of view does the 16mm lens provide?

The field of view depends on sensor size and working distance. For example, the supplied data lists a 2/3-inch field of view of 109.52 × 91.03 mm at 200 mm and 268.08 × 222.82 mm at 500 mm.

How does the 16mm lens differ from a 12mm lens?

At the same sensor size and working distance, the 16mm lens provides a narrower field of view and places more camera pixels on a smaller inspection region. The 12mm lens is more suitable when wider coverage is required.

Can this lens be used with near-infrared illumination?

The specified wavelength range is 420-1000 nm, so the lens can be evaluated for selected near-infrared applications within this range. Final performance should be tested at the actual wavelength.

Is this lens suitable for dimensional measurement?

It may be used in a calibrated system when the complete setup has been validated against the required tolerance. A telecentric lens is more suitable when object-height variation or perspective error cannot be accepted.

How do I confirm the correct lens configuration?

Provide the camera model, sensor size, resolution, pixel size, working distance, required field of view, inspection object, smallest feature, accuracy target, and illumination wavelength.

Request Lens Selection Support

Please send POMEAS the following information:

Camera model
Sensor size
Camera resolution
Pixel size
Available working distance
Required field of view
Inspection object
Smallest feature to detect
Accuracy requirement
Illumination wavelength
Object height variation

POMEAS will review sensor coverage, expected field of view, object-side pixel resolution, wavelength requirements, and mechanical compatibility before recommending the final configuration.