At Light + Building 2026, the C-4000 spectrometer demonstration drew attention for its practical approach to lighting measurement and documentation. In a conversation, Atsuo Kamijo showcased how the device combines precision measurement with a streamlined digital workflow.

The C-4000 spectrometer connects via Bluetooth to a smartphone or tablet, allowing users to control the device and view data in real time. This integration eliminates the need for separate handheld displays and simplifies field use. According to Atso, the goal was to make lighting measurement faster and more intuitive for designers, engineers, and contractors.

A key feature of the C-4000 spectrometer is its ability to link measurement data directly to a visual reference. Users can take a photo of a space or upload a floor plan, then tap specific points to record readings. The device captures metrics such as CRI, TM-30, and chromaticity, and stores each data point with its exact location.

This approach removes the need for handwritten notes and reduces the risk of errors when documenting complex lighting environments. For professionals working on large projects, the ability to map data visually can significantly improve accuracy and efficiency.

The C-4000 spectrometer demonstration reflects a broader trend toward connected tools in the lighting industry. As workflows become more digital, products that integrate measurement, documentation, and visualization are gaining importance.

At Light + Building 2026, the C-4000 stood out as a solution designed not just for precision, but for how lighting professionals actually work in the field.

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