Before selecting a mounting bracket and mounting the camera, take the following considerations into account to ensure an easy installation process.
Identify where the camera should be positioned so it lines up with the product feature you plan to inspect. Some of the most common mount points are shown below.
1) Beside the line — Mounted beside a conveyor line for barcode inspection.
2) Above the line — Mounted above a conveyor line for label matching.
3) Under the line — Mounted below a hugger belt conveyor for package inspection.
Ensure that the camera and mount are easy to clean without shifting position. Use shock mounts to minimize movement and vibration, and maintain camera alignment where necessary. Permanent mounting is strongly recommended to ensure the camera can't be moved around. Additionally, ensure your mounting configuration has enough room and stability for ring lights, bar lights, dome lights, or area lights.
Certain camera lenses are optimized for certain working distances. Refer to the table further down to understand the lens options available for a range of working distances and expected fields of view.
In order to minimize glare when inspecting reflective products, tilt the camera at a 10° to 20° angle. Samsara may also recommend external lighting to reduce glare in specific applications.
Note - A 5ft USB cable is included for camera to controller connectivity. Note that this is a high-performance cable specially designed for Samsara Machine Vision. For optimal performance, we do not recommend using other USB cables. Please factor in this cable length when considering installation options.
1) Once you have identified a mount location and installed your mount, mount the camera at the correct angle and working distance using the ¼ x 20 mounting screw or the included swivel mount and M4 screws.
Using the self-tapping screws, install the controller mounting plate in your electrical enclosure. If you plan to connect the system via Wi-Fi, the plate and controller should be mounted outside of the enclosure near the inspection point.
Align the controller with the mounting bracket and attach using the flat head screws.
Working Distance and Lenses
Table 1: Expected field of view dimensions based on lens length and working distance.
|4 in||6 in||12 in||20 in||36 in||50 in|
|Lens||4.2mm||4.57 in x 3.43 in||6.86 in x 5.14 in||13.71 in x 10.29 in|
|6mm||4.80 in x 3.60 in||9.60 in x 7.20 in||16 in x 12 in|
|8mm||3.60 in x 2.70 in||7.20 in x 5.40 in||12 in x 9 in|
|12mm||4.80 in x 3.60 in||8 in x 6 in||14.40 in x 10.80 in|
|16mm||3.60 in x 2.70 in||6 in x 4.50 in||15.00 in x 11.25 in|
Field of View considerations
As an example, consider a situation where you're hoping to perform inspections on the Eiffel tower. The further you step back, the more of the Eiffel tower you can capture in frame with your camera but the less detail you'll be able to reliably see. If your goal is to count the number of rivets on one leg of the Eiffel tower, you might consider using a different type of camera lens or stitch multiple images together, but most likely you'll choose to forgo fitting the entire tower in frame and instead focus on capturing just one leg of the tower in high resolution and detail.
Overall, when it comes to selecting the right lens and working distance, the most important considerations are to have the features you want to inspect within your camera's field of view, properly lit, and in focus.
Note: If you have specific questions about lens options and field of view, please reach out to Samsara support.