Meridian® Starfield Platform Specifications
A Meridian Starfield is a rigid assembly of multiple target projectors that together cover the field of view of the DUT by simultaneously projecting test targets from all prescribed field angles. This type of system is a compact and highly accurate solution for end-of-line camera testing or for performing active alignment of camera assemblies in high volume production environments.
Target projectors used in a Starfield assembly may either be Static Target Projectors (STPs), Focusing Target Projectors (FTPs), or a combination of both types.
Meridian Starfields are designed according to each customer’s specific requirements. The Starfield mount consists of a thick plate into which precision bores are machined to receive the target projector barrels together with quasi-kinematic location features to interface with the customer’s test station. This allows for consistent and repeatable testing of field points.
In cases where the DUT lens has a significant amount of distortion, the edges of a crossedge target for an off-axis projector may end up tilted significantly relative to the sensor array, producing undersampled MTF results. When provided with a customer’s camera lens prescription or black box model, Optikos can predistort the off-axis target design to compensate for the distortion in the lens.
A Meridian Starfield System Includes:
- Target projectors installed in mechanical mount
- Interface box assembly and bus cable
- Protective cover
| Starfield Platform Specifications | |
| Number of Target Projectors | 1 to 98 (9 and 13 are most common) |
| Target Projector Pointing Accuracy w.r.t line of sight of on-axis target projector (°) |
Semi field angles <25: ±0.05 of nominal
Semi field angles <40: ±0.1 of nominal Semi field angles <60: ±0.2 of nominal |
| Typical Dimensions (mm) | 420 W x 230 D x 195 H |
| Typical Mass | |
| Power Requirements | See STP or FTP specifications |
- Control of all connected target projectors
- Simultaneous horizontal and vertical MTF measurements at multiple field points in a single frame
- User definable regions of interest for sampling edge images
- Camera Line of Sight (LOS) and roll relative to the camera housing (requires alignment of the DUT nest to the Starfield
- Analysis of static images or batch processing of multiple images
- Quasi- realtime image analysis through shared folder handoff of image files
- Realtime video interfacing for certain video formats and camera manufacturers
- Customizable versions for interfacing to customer’s unique video formats on request
