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COLO.Science · Spectroscopy & Color · Portable colour measurement
CS4580 Portable Spectrophotometer — 45/0, LED and UV, Ø20 mm aperture, traffic signs
The CS4580 portable spectrophotometer (COLO product code PRO7963) measures colour and colour difference with 45/0 geometry — 45° ring illumination and 0° viewing, the way the eye judges colour. A large Ø20 mm aperture, full-spectrum LED with UV light source and a dedicated traffic-sign function make it the instrument for road signs, road markings and reflective films, as well as for textured and striped surfaces.
Which 45/0 portable model?
Overview
The large aperture averages the colour of uneven, striped, granular and retroreflective surfaces in one reading. For traffic signs the instrument shows brightness factor and chromaticity coordinates against the standard sign colours and user-defined polygon tolerances, with pass/fail on the screen.
Key characteristics
- 45/0 geometry with 45° ring illumination
- Full-spectrum LED and UV light source, 400–700 nm
- One large aperture: Ø20 mm
- Traffic signs, road markings and reflective films: brightness factor and chromaticity
- Repeatability ΔE*ab ≤ 0.04, inter-instrument agreement ΔE*ab ≤ 0.2
- USB and Bluetooth, 1 000 standards and 30 000 samples
Suitable for
- Traffic signs, road markings and retroreflective films
- Paints, coatings, inks and printed material
- Plastic parts and plaques, textiles, leather and paper
- Colour quality control with CIE Lab (D65/10°) and ΔE pass/fail in the laboratory, at the line or at goods receipt
Why this instrument
Retroreflective sheeting, road paint and coarse surfaces give scattered readings with a small spot. The CS4580 measures a Ø20 mm area with ring illumination, so orientation and texture affect the result much less — and it checks traffic-sign colours against their tolerance areas in one step.
On the instrument
Technical specifications
Optics and performance
| Geometry | 45/0, 45° ring illumination, 0° viewing |
| Standards | CIE No.15, ISO 7724-1, ASTM E1164, DIN 5033 Teil 7 |
| Light source | Full-spectrum LED and UV light source (UV included / excluded) |
| Reflectance range | 0–200 % |
| Aperture | One, Ø20 mm |
| Repeatability | ΔE*ab ≤ 0.04 (white tile, 30 measurements) |
| Inter-instrument agreement | ΔE*ab ≤ 0.2 (12 BCRA Series II tiles) |
| Interfaces · storage | USB, Bluetooth · 1 000 standards, 30 000 samples |
| Traffic signs | Brightness factor and chromaticity coordinates; standard traffic-sign colours, user-defined polygon tolerances |
Colour data and general
| Colour spaces | CIE Lab, XYZ, Yxy, LCh, CIE LUV, Hunter Lab, βxy |
| Colour difference | ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc (2:1 and 1:1), ΔE*00, ΔE (Hunter) |
| Indices | WI, YI, metamerism index, colour fastness and staining, colour strength, opacity |
| Observer · illuminants | 2° and 10° · D65, A, C, D50, D55, D75, F1–F12 (incl. CWF, DLF, TPL5, TL84, TL83/U30) |
| Spectral system | Concave grating, dual-array CMOS sensor (256 elements) |
| Wavelength range · pitch | 400–700 nm · 10 nm |
| Measuring time | approx. 1.5 s |
| Display | 3.5″ TFT capacitive touch screen |
| Battery | Li-ion, 5 000 measurements within 8 hours |
| Light source life | 5 years, more than 3 million measurements |
| Dimensions (L × W × H) · weight | 184 × 77 × 105 mm · approx. 600 g |
| Operating environment | 0–40 °C, 0–85 % RH, non-condensing |
Software and data
The PC software (free download) stores standards with their tolerances, shows the spectrum and the colour difference, follows trends and exports results for reports. Standards can also be created and measured directly on the instrument.
Data are transferred by USB or Bluetooth.
Standard delivery
- Instrument with white and black calibration standard
- Aperture Ø20 mm
- PC software (download), USB cable, power adapter, built-in Li-ion battery, user guide
- Dust cover
Optional: micro printer, powder test box, universal test component, locating plate. The delivered configuration for a specific order is the one confirmed in the COLO.Science quotation.
Knowledge base
New to colour measurement? Light sources, metamerism, CIE Lab, ΔE and measuring geometries (45/0 and d/8) are explained on COLO.Science, our knowledge base.
Selection guide
- Traffic signs, road markings, reflective films or coarse surfaces: CS4580 — Ø20 mm, UV, Bluetooth.
- Highest accuracy, fluorescent samples, large and small areas: CS4560 — UV, Ø8 and Ø4 mm, Bluetooth.
- Routine Lab and ΔE checks of non-fluorescent samples: CS4510 — one aperture Ø8, Ø4 or Ø2 mm, USB.
- Results independent of gloss (SCI) or glossy and textured samples: d/8 geometry — the CS30 portable series.
- Transmittance, liquids or haze: a benchtop spectrophotometer is needed — see the CS60 series.
Configuration notice
This page is provided for orientation and product selection. Sample type, apertures, accessories and the colour data you report are confirmed with the official COLO.Science quotation.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
