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Phase One Rainbow Multispectral Imaging Solution
Unveil the Invisible

Discover Multispectral Imaging

Multispectral imaging (MSI) captures light from a range of wavelengths - visible and invisible to the human eye - across the electromagnetic spectrum using special camera technology, light sources, and filters.

The resulting “stacks” of images are used to analyze substances and surfaces to determine readability, authenticity, age, and material-characterization and distribution.
Read more about ‘The MAGIC behind MSI’
Fully Automated 100MP

Multispectral Imaging Solution

The Rainbow Multispectral Imaging Solution

Rainbow MSI Software

Multispectral cameras have been available in the market for many years but the calibration process, as well as the techniques for changing material sizes whilst maintaining consistent images that can be stacked and analyzed efficiently, has been a challenge and created significant overhead.

Phase One has worked with specialists on MSI projects over years. Based upon this experience and learning, we have devised a flexible and easy to handle, yet robust MSI solution with a workflow based on best practices.

The Rainbow capture process is fully automated: simply position the subject matter and press ‘Capture’. The full stack of captures are then made with automated focus, automated “flattening”, automated exposure normalization, and automated alignment to deliver the perfect stack, again and again - with perfect repeatability and stability. 

The Rainbow MSI software controls all the elements – focusing the camera, moving the filter carousel on the filter wheel, turning the lights on and off in the correct order and timing, aligning the images, and finally creating the perfect stack.

The Rainbow Camera

The iXG 100MP Wide Spectrum camera employs a high-resolution color accurate CMOS sensor and advanced focusing to deliver sharp, reliable and repeatable results through the entire sweep of the light wavelengths involved. 

The Wide Spectrum RGB sensor is tailored for multispectral work, with the added benefit of being able to also do normal digitization work “Do it once, do it right”. Just attach the included IR/UV-cut filter to the magnetic holder of the lens, and you are good to go, following Metamorfoze, FADGI and ISO color standards.

The CMOS sensor provides a responsive live-view for quick and safe positioning of subject matter.
To keep out stray light, the camera comes with a custom lens shade tube mounted on the filter wheel.

The iXG 100MP Wide Spectrum camera comes with 72mm and a 120mm lenses and extension tubes, all suited for the wide range of MSI imaging tasks, as well as normal flat copy digitization work. 

The RS leaf shutter of the iXG camera guarantees 1 million actuations. Working with the electronic shutter of the iXG camera gives you infinite durability. The precise focusing mechanism of iXG measures distances accurately, and provides for Auto PPI functionality, which makes digitization work at different resolutions quick and easy.

The Rainbow Filter Wheel

The filter wheel can hold up to five filters. It is configured to support the filtering needs of accurate visible imaging and luminescence imaging, which fits many applications, including the CHARISMA standard manual.

The carousel, which holds the filters is removable and can be configured with any 2” filters for future scientific applications. The factory capture settings can be adjusted to suit different filter configurations. To support different MSI applications, you can simply work with two or more filter carousels.

The Rainbow LED Lights

Rainbow supports two types of LED lights for a wide range of applications:

  • Multiband DedoLight, delivering narrowband UV, broadband visible light, broadband and narrowband IR. This light is often used for MSI applications related to Art Conservation and to Police Forensics. Recipes for the capture of images following the CHARISMA standard manual are included.
  • Narrowband EurekaLight, delivers 16 narrowbands of light from UV, through visible to IR. This light is often used for MSI applications related to Document Readability.

Phase One Expert Team

The Rainbow MSI solution can be tailored for a wide spectrum of applications. The Phase One Expert team is ready with customer guidance to configure the best solution for a given application. Advice is backed up with online demonstrations and sample imaging from the Phase One MSI demo center in Cologne, Germany.

For feasibility studies, smaller projects, and operational support, Phase One offers workshops in which specialists can take the customer through the basics of MSI, and the capturing of relevant samples, directed at the MSI projects in question.

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Download the brochure

Solution at a Glance

  1. iXG 100MP Wide Spectrum camera incl magnetic IR/UV cut filter & hood
  2. MSI accessory kit incl Filter wheel, mounting rail, USB hub, PC and Software
  3. Multiband/ Charisma Dedolights, including filters, power supplies and USB power switches*
  4. Narrowband Eureka Lights*
  5. Copystand (desktop/ floor/ wall)*

*Light stand and copystand not included

Multispectral Imaging in Use


The National Gallery of Denmark

The National Gallery of Denmark owns a painting acquired hundreds of years ago through the Danish Royal Family. The painting has been inspected and analyzed several times to determine its origin and creator, without success. In the fall of 2019, the painting was analyzed again including the use of wide spectrum photography at a high-resolution with a sequence of different lighting, including UV light, visible light in reflectance and photo-induced luminescence, and IR light. The IR image disclosed the painted signature “BRUEGHEL 1562” in the upper right corner. Authentication of a Pieter Bruegel the older masterpiece was well under way.

The Royal Library of Denmark

The Royal Library of Denmark holds collections of handwritten letters and records from the former Danish colonies in Tranquebar, India (1620-1845) and St. Croix, the West Indies (1672-1917). Many of these documents are faded and decayed by age, moisture, and bugs. In 2017 samples from the collections were captured using Multispectral Imaging and the results included the recovery of readability and the appearance of watermarks in the paper.

Police and Forensics

Many disciplines of MSI analysis are applied within Police work. Here is an example of gunshot residue discovered by photo-induced IR luminescence.

The Rainbow MSI Solution

Camera Specifications
See specifications
iXG 100MP Wide Spectrum
Sensor size 53.4 x 40.0
Resolution 11608 x 8708
Pixel size (µm) 4.6µm
ISO Range 50 - 6400
Data Interface USB3
File Formats Raw 14bit, Raw 16bit
Lenses Schneider Kreuznach RS 72mm and/ or 120mm
Weight (gr) with 72mm lens 2300 incl. L Bracket
Dimension (mm) with 72mm lens 150 x 130 x 130 inc. L - Bracket
Approvals FCC Class A, CE, RoHS
Operating Temperature (°C ) -10 to 40
Operating Humidity (% ) 15 - 80 (non-condensing)
Accessories BG39 filter for normal photography, with magnetic adaptors.
Custom lens shade suited for the supplied filter wheel

System Specification 
See specifications
Multiband Solution Narrowband Solution
Included LED lights

2 x UV, inc. UG11 filters (365 µm)

2 x VIS, inc. BG39 filters

2 x IR (860µm & 960µm)

Wavelengths (µm): 365, 385, 410,
420, 450, 480, 510, 530, 550, 600,
630, 640, 660, 740, 850, 940
Configuration 2 banks with UV-, VIS-, IR- emission each 2 panels with 16 LEDs in each
FilterWheel Included, controlled via USB
Communication with lights and filter wheel USB via 7 - port powered hub
Light stands Not included
Included Capture Computer DELL Mobile Precision 7740 CTO BASE, 17.3”, i9 processor, 64GB RAM, 1TB SSD, Windows 10 OS
Workflow Software Phase One Rainbow MSI software
Output 8-image stack, according to Charisma Guidelines 16-image monochrome stack, ready for statistical analysis
Output Luminescense 3 channels 15 channels

Our Cultural Heritage experts are here to help

Whether you have a question or want to discuss solutions, write to us and your local Cultural Heritage partner will be in touch shortly.