The customer should define the design requirements. I can help the customer to define the requirements. Please find below the parameters that should be defined.

• Environmental conditions.
• Project millstones/timetable.
• Preferable materials.
• Quantity estimation for future production.

For imaging systems.

• Application of the imaging system.
• Range of object distances.
• Field of View (FOV).
• Weight/volume constraints.
• Resolution (pairs of lines per mm) at the main object distance in the center of the image.
• Depth of Field or resolutions at different object distances in the centers of the images.
• Allowed geometrical distortion.
• Spectral range.
• A full CMOS datasheet will be very helpful. Number and sizes of pixels. Graph of Chief Ray Angle (CRA) versus image height. I can decide for myself which CMOS to use.

For illuminating systems.

• Spectral ranges.
• White balance and Color Rendering Index (CRI).
  
• A full datasheets of LEDs will be very helpful. Graphs of angular emittance of the LEDs. Graphs of spectral emittance of the LEDs. Dimensions of emitting surfaces. I can decide for myself which LEDs to use.
• Object distance.
• Requirements to the homogeneity of flux on the object plane.
• How much light should fall on object plane in lux.
• Efficiency of the illuminating system.