Colour Accuracy Where Inspection Decisions Are Made

Food Inspection & Grading

Reliable Grading When Colour Signals Quality

Colour is a key sorting parameter in food production, but conventional Bayer-based cameras can introduce limitations due to interpolation during demosaicing. Subtle variations caused by bruising, ripeness differences, and surface defects may therefore be more difficult to resolve accurately.

The JAI Apex Series uses a prism-based 3-sensor design to capture full RGB information at every pixel location simultaneously, preserving both spatial and color fidelity. Selected models also feature X-Scale, enabling flexible adjustment of resolution through sub-pixel scaling to optimize image quality for specific inspection requirements.

Applicable inspection tasks:

• Surface defect detection on fresh produce (bruising, discolouration, damage)
• Colour-based grading of fruit and vegetables across production lines
• Foreign material identification where colour contrast is the primary discriminator
• Multi-illumination inspection in a single camera pass, reducing system complexity

Electronics & Semiconductor Inspection

Colour Precision for High-Stakes Component Inspection

A misclassified MLCC or an undetected solder defect is not a cosmetic issue, it directly impacts yield and long-term reliability. At component level, the differences that matter are often subtle: slight shifts in marking colour, uneven solder coverage, or small changes in surface appearance that indicate process variation. Bayer-based cameras can introduce interpolation artifacts, limiting accuracy at fine boundaries and transitions.

Using a prism-based 3-CMOS design, the Apex Series captures full RGB information at every pixel location, preserving both spatial detail and colour accuracy. This enables reliable detection of fine defects and consistent inspection performance under a wide range of lighting conditions.

Applicable inspection tasks:

• MLCC and passive component colour grading and classification
• PCB solder inspection and colour-based quality verification
•  Wafer surface inspection where spectral contrast identifies process deviation
• Component marking verification under controlled illumination

Pharmaceutical Inspection

Consistent Colour Verification in Regulated Production

Pharmaceutical colour inspection is fundamentally about consistency, ensuring the same coating shade is verified reliably across every batch, every shift, and every production site. This requires stable, repeatable colour measurement under controlled illumination conditions.

Using a prism-based 3-CMOS design, the Apex Series captures each colour channel on a dedicated sensor rather than reconstructing it through interpolation. This enables highly consistent and repeatable colour information, supporting reliable compliance checks for tablet coating uniformity, capsule fill verification, label colour accuracy, and packaging inspection.

Applicable inspection tasks:

• Tablet and capsule coating uniformity inspection
• Label and print colour verification against reference standards
• Packaging colour consistency checks across production batches
• Contamination detection where colour contrast provides the primary signal

Display & Surface Inspection

Detecting Defects That Conventional Cameras Overlook

Subtle colour deviations across a flat panel. Coating irregularities that appear as slight spectral shifts before they become visible. Surface anomalies defined not by geometry, but by how the material interacts with light. 

The 5.1 MP Sony IMX548 at the core of some of Apex Series models, provides the spatial resolution required to inspect large fields of view, while the prism-based 3-CMOS architecture ensures that colour information is captured directly in each channel. This ensures accurate colour representation, making it easier to detect subtle variations in coatings and material properties.

Applicable inspection tasks:

• Flat panel display pixel and sub-pixel defect detection
• Coating uniformity and colour consistency verification
• Surface inspection of precision components where spectral accuracy is critical
• Multi-spectral comparison tasks under controlled illumination

Prism-based 3-CMOS imaging is one architecture among several used in colour and spectral inspection. Where the requirement is high-accuracy per-pixel RGB - rather than material differentiation or spectral analysis beyond visible light - it is the appropriate choice.

Bayer-mosaic cameras remain appropriate where colour precision is not a quality-critical variable. Multispectral and hyperspectral systems capture narrow spectral bands beyond RGB and are suited to material identification and spectral analysis tasks that go beyond colour inspection. 

The JAI Apex Series separates incoming light through a precision prism into three dedicated CMOS sensors, one for each colour channel. As a result, every pixel location contains full RGB information without interpolation. There is no reconstruction, no dependency on neighbouring pixels, and no spatial misalignment between colour channels.

Discuss Your Inspection Requirements

If colour accuracy is a limiting factor in your current inspection setup, or if you are specifying a new system and need guidance on camera selection, our technical team can support your evaluation.