Falcon 4M Camera Manual
03-032-20044-01
DALSA
10
Camera Cosmetic Specification
Beyond sensor cosmetic testing, the camera is placed under additional testing to more
closely examine potential cosmetic defects due to the sensor glass. This test examines the
difference between two images. One image is taken under collimated light and the second
image is taken under diffuse light. Any difference represents blemishes on the glass
rather than blemishes on the sensor die surface.
Camera Cosmetic Specifications - Glass
Cosmetic Spec
Difference
Spec
Cluster Size Max Number of Defects
Glass defects
5%
9
0
Definition of blemishes
Glass defects
A group of pixels exceeding the given cluster size and the difference between the
collimated and diffuse light settings. Images are taken at nominal light (illumination at
50% of the linear range). A cluster is defined as a grouping of pixels. A grouping of pixels
refers to adjacent pixels or pixels that touch.
In addition, the camera is examined against the following cosmetic specifications.
Camera Cosmetic Specifications – Sensor & Glass
Cosmetic Specification
Maximum Number of Defects
Dark pixel defects (>300DN)
50
Dark pixel defects (>600DN)
1
Single pixel defects
100
Definition of cosmetic specifications
Dark pixel defects
Pixel whose signal, in dark, exceeds the given threshold (10 bits).
Single pixel defect
Pixel whose signal, at nominal light (illumination at 50% of saturation), deviates by more
than ±30% from its neighboring pixels.
Test conditions
•
Digital gain – 1X.
•
Nominal light = illumination at 50% of saturation.
•
Frame Rate = 60 fps (Falcon 4M60), 30 fps (Falcon 4M30).
•
Integration time = 15 ms.
•
Ambient Temperature of 25°C.
Содержание Falcon 4M30
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