8mm 2/3-Inch 10MP C-Mount Lens with 0.15m Focus | POMEAS

8mm 10MP C-Mount FA Lens for 2/3-Inch Cameras

The POMEAS PMS-LFEHH-0828M(B) is an 8mm fixed focal machine vision lens designed for C-mount cameras with sensors up to 2/3 inch. It is rated for 10MP imaging and provides an F2.8-F16 manual iris, a focusing range from 0.15 m to infinity, and separate locking screws for focus and aperture adjustment.

Its short focal length is suitable for capturing a relatively wide inspection area when the camera must be installed close to the object. The compact Ø35 mm housing also helps reduce mechanical interference in space-limited equipment.

Typical applications include packaging verification, assembly inspection, component-presence detection, robot guidance, label inspection, and general surface inspection. Final lens selection should be confirmed using the camera sensor size, pixel size, working distance, required field of view, and smallest inspection feature.

Key Features

10MP Resolution Rating

The PMS-LFEHH-0828M(B) is rated for 10MP machine vision imaging.

The resolution rating should be evaluated together with the camera sensor dimensions and pixel size. Two cameras with the same megapixel count may place different optical demands on the lens if they use different sensor formats or pixel pitches.

Supports Sensors up to 2/3 Inch

The lens supports a maximum 2/3-inch sensor format with an active area of 8.8 × 6.6 mm and a specified Ø11 mm image circle.

It may also be used with smaller sensors when the camera has a compatible C-mount interface. A smaller sensor captures a reduced central portion of the image and produces a narrower field of view at the same working distance.

8mm Focal Length for Wide-Area Imaging

The 8mm focal length provides a wider view than longer focal-length lenses used with the same camera and installation distance.

This is useful when:

• A larger object must fit into one image
• Several components must be inspected together
• The camera must be mounted close to the inspection area
• Installation space limits the available working distance
• A wider conveyor or assembly region must be monitored

Because the camera pixels are distributed across a larger object area, very small defects may require a longer focal length or a smaller field of view.

0.15 m Minimum Focusing Range

The published focusing range begins at 0.15 m and extends to infinity.

This makes the lens suitable for compact inspection stations where the camera must be installed relatively close to the object. The exact reference point used for the focusing distance should be confirmed when mechanical installation tolerances are critical.

Published Distortion Specification

The product sheet specifies distortion of -0.81% at y = 5.5 mm.

This value provides a useful reference for general positioning, edge detection, and geometry-related inspection. Applications involving dimensional measurement should still be calibrated and validated using the complete camera, lens, working distance, and software configuration.

Manual Focus and Iris Locking

Both the focus and aperture adjustments include locking screws.

Once the image has been focused and the exposure settings have been established, the adjustment rings can be secured to help reduce accidental movement during installation, maintenance, or machine operation.

Compact C-Mount Housing

The lens uses a C-mount interface and has a maximum outer diameter of Ø35 mm according to the dimension drawing.

Its compact structure can simplify installation near lighting, brackets, protective covers, and other machine components. Mechanical clearance around the locking screws should still be checked before final installation.

Technical Specifications

Model: PMS-LFEHH-0828M(B)

Lens Type: Fixed focal machine vision FA lens

Resolution Rating: 10MP

Focal Length: 8.0 mm

Maximum Sensor Format: 2/3 inch

Maximum Sensor Area: 8.8 × 6.6 mm

Image Circle: Ø11 mm

Aperture Range: F2.8-F16

Focusing Range: 0.15 m to infinity

Distortion: -0.81% at y = 5.5 mm

Back Focal Length: 10.7 mm

Camera Mount: C-Mount

Filter Thread: M32.7 × 0.5 mm

Focus Adjustment: Manual, with locking screw

Iris Adjustment: Manual, with locking screw

Maximum Outer Diameter: Ø35 mm

Operating Temperature: -10°C to +50°C

Operating Humidity: 30%-80%, non-condensing

Camera and Sensor Compatibility

The PMS-LFEHH-0828M(B) is designed for machine vision cameras with sensors up to the specified 2/3-inch format.

It may also be used with smaller sensor formats, provided that the camera uses a compatible C-mount interface. When the lens is installed on a smaller sensor, the camera uses a smaller central portion of the image circle and captures a narrower field of view.

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
• Clearance around the locking screws
• Filter or protective-window requirements
• Illumination wavelength

The 10MP rating does not guarantee compatibility with every 10MP camera. The camera pixel size and the smallest required inspection feature should be evaluated together.

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

Field of View and Working Distance Guidance

The actual field of view depends on:

• Lens focal length
• Camera sensor dimensions
• Distance between the camera and object
• Camera aspect ratio
• Active image area

For the same camera:

• Increasing the working distance increases the visible object area.
• Reducing the working distance decreases the visible object area.
• An 8mm lens provides a wider view than a longer focal-length lens.
• A larger sensor captures a wider scene than a smaller sensor.

The published focusing range is 0.15 m to infinity. However, focusing range and working distance are not always measured from the same mechanical reference point.

To confirm the actual field of view in millimeters, provide:

• Camera model
• Sensor size
• Resolution
• Pixel size
• Available working distance
• Required horizontal field of view
• Required vertical field of view
• Smallest feature to inspect
• Required inspection accuracy

POMEAS can then evaluate whether the 8mm focal length provides sufficient coverage and pixel resolution.

Recommended Applications

Packaging and Label Verification

The wide imaging area can help capture cartons, containers, labels, seals, caps, and multiple printed regions in one image.

It is suitable for checking presence, position, orientation, packaging completeness, and visible printing defects.

Application boundary: Fine characters, small barcode modules, and minor print defects must be checked against the total field of view and camera pixel size.

Assembly and Component-Presence Inspection

The lens can cover a relatively broad assembly region, allowing multiple components, screws, connectors, or installation positions to be inspected simultaneously.

The locking screws help maintain focus and aperture settings after equipment setup.

Application boundary: When individual features are very small, a longer focal length may place more camera pixels on each inspection point.

Robot Guidance and Part Localization

The 8mm focal length can help a vision system locate parts across a wider pickup, loading, sorting, or positioning area.

It may support part presence, orientation recognition, and general coordinate localization.

Application boundary: Object height variation can cause perspective and apparent-size changes with a conventional FA lens. Telecentric or 3D imaging may be required for height-sensitive positioning.

Conveyor and Production-Line Inspection

The lens may be used to monitor several products or a wider conveyor section from a relatively short installation distance.

Application boundary: Conveyor speed, exposure time, motion blur, lighting intensity, and object spacing must be evaluated separately.

General Surface Inspection

With suitable illumination, the lens can support inspection of contamination, scratches, missing material, surface marks, and visible defects across a relatively large area.

Application boundary: Small or low-contrast defects may require a narrower field of view, more camera pixels, or specialized lighting.

Selection Notes

Choose This Model When

• A relatively wide inspection area is required
• The camera must be installed close to the object
• The available focus distance is 0.15 m or greater
• The camera sensor is 2/3 inch or smaller
• The camera uses a C-mount interface
• A compact Ø35 mm lens body is preferred
• Manual focus and iris locking are required
• A 10MP lens rating matches the imaging requirement

Choose a Longer Focal Length When

• The 8mm field of view is wider than required
• The inspected feature occupies only a small part of the image
• More camera pixels are needed on a small defect
• The camera can be installed farther from the object
• Perspective appearance should be reduced
• A more concentrated inspection region is required

When a Standard FA Lens Is Usually Sufficient

A conventional FA lens may be suitable for:

• Presence and absence inspection
• Packaging verification
• Label-position checks
• Barcode and character reading
• Assembly verification
• General surface inspection
• Robot guidance
• Part localization

When to Consider a Telecentric Lens

Consider a telecentric lens when:

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

When This Lens May Not Be Suitable

The PMS-LFEHH-0828M(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 inspection area is much smaller than the 8mm field of view
• Very small defects must be detected across a large object area
• The required focus distance is shorter than 0.15 m
• High-accuracy dimensional measurement is required without calibration
• Object height variation causes unacceptable perspective changes
• Spectral or wavelength performance must be guaranteed before selection

FAQ

Can the PMS-LFEHH-0828M(B) be used with a 2/3-inch camera?

Yes. The lens is specified for sensors up to 2/3 inch, with an active area of 8.8 × 6.6 mm and a Ø11 mm image circle. The camera must also use a compatible C-mount interface.

Can it be used with a smaller sensor?

Yes. It may be used with smaller C-mount sensors. A smaller sensor captures a narrower field of view because it uses a smaller portion of the lens image circle.

Does the lens work with every 10MP camera?

Not automatically. Camera sensor size and pixel pitch vary between models. The active sensor dimensions, pixel size, required field of view, and smallest inspection feature must be checked.

What field of view will the 8mm lens provide?

The exact field of view depends on the camera sensor dimensions and working distance. Provide both values to POMEAS for calculation or testing.

What is the advantage of the 0.15 m focusing range?

It allows the lens to focus in relatively compact inspection stations where the camera must be installed close to the object. The precise mechanical reference point for the distance should be confirmed for tight installations.

Is this lens suitable for dimensional measurement?

It may be used in a calibrated system when the complete measurement performance has been validated. For strict dimensional measurement or objects with changing height, a telecentric lens is generally more appropriate.

How is this model different from another 8mm lens?

This model should be compared using its 2/3-inch sensor coverage, 10MP rating, F2.8-F16 iris, 0.15 m focusing range, distortion specification, Ø35 mm housing, and C-mount interface. The final choice depends on camera compatibility and installation conditions.

Request Lens Selection Support

To confirm whether the PMS-LFEHH-0828M(B) is suitable for your machine vision system, please provide:

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

POMEAS will review sensor coverage, field of view, pixel resolution, mechanical compatibility, and application conditions before recommending the final configuration.