Caeleste Image Sensors for Industrial and Professional Imaging - Alrad

Caeleste Image Sensors for Industrial and Professional Imaging

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.

Caeleste achieves high performances for these application fields:

High speed imaging
  • High sensitivity: ≥ 100 µV/e– and 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
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
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
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