Please sketch the optical setup for an enlargement.
What is the magnification? How to determine it.
ratio of image size to object size.
What is the thin lens formula?
How to calculate the focal length of multiple lenses?
d > 0:
d -> 0:
Explain the Depth of field concept.
Distance between nearest and farthest objects that appear acceptably sharp.
How to measure the depth of field?
Method 1:
Line pattern that spans over the complete Depth of Field. At some point the pattern becomes indistinguishable from the backgournd noise.
Method 2:
Calibration plate moved stepwise through the depth of field.
What limitations do you need to consider for the design of an optical setup?
Depth of Field
Diffraction Limit
What types of camera do you know?
film-based
digital frame-based
CCD
CMOS
Event Based Imaging
What is the major difference between CCD- and CMOS-sensors?
CCD is processing the pixel-value line by line via shift register. CMOS is processing every pixel individualy and simultaniously. Therefor CMOS is much faster and can be operated at higher framerates.
What type of illumination devices can you name?
LED (constant or pulsed)
Laser (very short ecposure times)
Nanolite Flashlamp
High Power Electric Arc Lamp
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