In accordance with the CIE DE2000 visual threshold standard, under the D65 standard light source, the minimum color difference that the human eye can stably distinguish is ΔE 2‑5. Color deviations below this range are almost imperceptible to the naked eye. Relying on manual visual judgment for color sorting in mass industrial production is highly susceptible to subjective interference, which leads to unstable color consistency across different production batches. For this reason, high‑precision portable spectrocolorimeters have become essential core equipment for industrial color quality control.
The CIE LAB uniform color space defined by CIE 15.2‑1986 is a globally recognized universal standard for industrial color quantification. This system quantifies colors through three independent parameters: the L‑value represents lightness, ranging from 0 (pure black) to 100 (pure white); the a‑value corresponds to the red‑green axis; the b‑value corresponds to the yellow‑blue axis. This three‑dimensional data system eliminates subjective visual errors and provides objective data support for accurate color matching across production batches.
Sanyuanse portable spectrocolorimeters strictly comply with CIE LAB color specifications. All models are equipped with a D65 full‑spectrum LED light source with a color temperature of 6500K and a color rendering index Ra99. Adopting the D/10° diffuse illumination and 10° viewing angle structure, the devices continuously collect spectral reflectance data of visible light in the 380‑780nm full band, covering the entire visible spectrum of the human eye. Multiple measuring apertures are available, including fixed 12mm, 8mm, 4mm apertures and switchable 4/8mm dual apertures, which can flexibly adapt to the inspection of large‑area flat materials, regular products and tiny components. The instruments support color measurement for concave‑convex curved surfaces with a step color difference within 0.2, meeting color control requirements for industries such as leather, plastics, textiles, cosmetics and ceramics.
With a handheld portable design and dimensions of 150×57×185mm, the equipment is powered by Panasonic 18650 high‑capacity batteries, which can support 5,000 measurements per full charge. Operators can carry the devices to production lines, raw material warehouses and finished product areas for on‑site random inspections, breaking the limitations of fixed laboratory testing and greatly improving color difference control efficiency. The instruments deliver excellent precision with a display accuracy of 0.01. After whiteboard pre‑heating calibration, the average error of rapid measurement is stabilized within 0.01, far exceeding the human visual resolution limit of ΔE 2‑5, so as to accurately capture subtle color variations invisible to the naked eye and guarantee consistent color performance between batches.
Equipped with a 3.5‑inch true‑color capacitive touch screen and bilingual support for Chinese and English, the instruments intuitively display multi‑dimensional color data including Lab, RGB, XYZ and LCh, as well as color difference charts and pass‑fail results. Built‑in color matching assistance and SD card data storage are available, with a testing speed of 35 times per minute and dual operation modes of button and touch control for high efficiency. As a professional domestic supplier of CIE LAB color measurement equipment, Sanyuan implements full‑process quality control. Every unit is calibrated with standard whiteboards before delivery to ensure stable and reliable precision. We provide OEM/ODM customization, bulk procurement and regional distribution services for global clients, with comprehensive after‑sales technical support.
Industries including paint, plastics, textiles, leather, cosmetics and automobile manufacturing all have high‑standard color control demands. Sanyuanse portable spectrocolorimeters feature outstanding stability, high precision and cost‑effectiveness, making them ideal solutions for industrial color detection. We sincerely invite global merchants and regional distributors to cooperate with us to explore the color measurement market together.