Custom image sensors for industrial applications

High speed imaging

Fast phenomena can only be studied, when recorded at high frame rate. This requires special architectures with low noise read-out chains to compensate for low light levels.

Sorting & hyperspectral imaging

Colour fidelity is the keyword for sorting applications. Whether a linear or area detector is used; the colour signal shall remain unchanged over the full array.

Quality inspection

Vision is the ideal non-contact technique for quality inspection. Global shutter, high speed and high dynamic range are important to cope with fast throughput and low light environment.

Food safety

Stimulated light processes, like fluorescence and Raman, are becoming available as in line inspection tools. They require image sensors with precise integration control and high gain, low-noise operation.

 

Custom image sensors for industrial applications

High speed imaging

  • High sensitivity: ≥ 100 µV/eand low noise operation: ≤ 2 erms
  • Technology Global Shutter (6T pixel) operation
  • Multi-row access to reduce row overhead time
  • Block or segment wise read-out to achieve faster frame rates
  • Colour Filter Array (CFA) and Micro lens technologies are available

Fast phenomena, but also fast operation can only be recorded with high-speed image sensors. Dedicated architectures and massive parallel outputs are a must. Low noise and high gain compensate for the low lighting.

Sorting & hyperspectral imaging

  • Low etaloning with optimised technologies
  • Custom designed pixel architecture and technology
  • Flexible timing (shutter modes & integration control)
  • Fast frame rates for hyperspectral imaging

Colour fidelity is the keyword for sorting applications: Backside illumination and front side thinning technologies are available. High frame rates can be achieved by massive parallelism. Dedicated techniques for low image lag.

Quality inspection

  • Low light level operation: Gain ≥ 100 µV/e
  • In-pixel anti-blooming
  • Technology Global Shutter (5T and 6T pixel) to avoid jello and skewness
  • Low noise operation: ≤ 2 erms

Fill level, blister filling, dimensional control, shape selection, robotics operation, …: all are benefiting from faster, more sensitive image sensors without motion artefacts. Low noise operation helps to reduce required light levels.

Food safety

  • Short integration time to capture fluorescence peak
  • Accurate timing delay to discriminate fluorescence signals
  • Noise ≤ 0.3 erms (4T pixels and oversampling) for Raman detection
  • Low etaloning over the full array
  • Photon shot noise limited behaviour when using SPAD’s

Stimulated light processes are very versatile techniques in food safety inspection. Due to the low photon yield and short delays, dedicated image sensors are a must.