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Full Spectrum Imaging System FSIS-II Lab

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The Arrowhead Forensics FSIS-II is a full spectrum imaging system for revealing fingerprints. The system comprises of specialist camera system with sensitivity from the deep UV to the near Infra Red. The software provides some truely unique integration techniques for working with shiney, curved and multi facteted substrates to reveal fingermarks on substrates that would be previously almost impossible to image.

This innovative system is capable of locating, capturing and casework managing marks on a variety of substrates in a few seconds including glass, metal, wood, paper, thermal paper and even food items.

Key features

The in-built unique FSIS-II integration features extends imaging capabilities across a broad range of surfaces including the ability to capture ridge detail on curved surfaces, eliminating the potential for errors caused by photo-stitching processes.
High Dynamic Range (HDR) – Allows a single image to show detail in both dark and bright areas, verses needing to choose to expose for one or the other. retain ridge detail in brighter parts of the image, while simultaneously revealing parts of the image that would have previously been too dark to see.
Background removal – with shortwave UV backgrounds are removed effortlessly.
Non-destructive way to analyse almost any piece of evidence. This includes metals, plastics paper and even food items.
Can be mounted to a search arm or copy stand

Why 254nm UV-C?

Simply the answer to this question is that you reveal marks you haven’t previously been able to detect with traditional techniques.

Extensive validation work has been undertaken on this technique which is showing significant mark detection improvements compared to visible and chemical treatment in the UV-C 254nm region.

Strong absorption – fatty and amino acids exhibit strong absorption at 254nm
- Tyrosine
- Tryptophan
Contrast mechanism
- Replies on reflection or absorption
  - Non-porous = Reflection
  - Porous = Absorption
- Optimal Wavelength
  - Studies have indicated that the UV-C of 254nm is the most effective wavelength for detection of latent fingermarks compared to longer UV wavelengths like UV-A (365nm)
- Equipment availability

Are all UV-C wavelengths alike?

254nm mercury vapour lamps are narrow bandwidth with (+/-) 1nm light bleed
- Able to create more contrast due to minimal bleed interfering with the filter
- Superior to LED lamps (see below)
- 254nm is further away from visible light
  - Dropping more backgrounds on substrates
  - 254 can’t penetrate glass and most plastics, allowing easier imaging, whereas longer wavelengths penetrate causing confusing backgrounds.
LED lamps have a much wider bandwidth with approximately (+/-) 20nm light bleed
- - - This produces significantly less contrast due to the larger cone of interfering bleed with the filter
    - Examples of this are LED lights available in longer wavelengths such as 262nm, 280nm, 365nm

UV-A 365 vs UV-C 254nm

Picture of thermal receipt showing signifcant more latent mark detail revealed at 254nm.

(Image courtesy of De Montfort University).

Options

In addition to the laboratory system with we also provide a a series of portable and crime scene variants which are easily transportable for deployment either at the crime scene or for intelligence operations.

Category: UV-C Imaging and Fingerprint Comparison

More Images

Tin can with latent marks revealed at 254nm using integration feature

(Picture courtesy from Nick Marsh)

Pen Knife with latent marks on handle and blade

(Picture courtesy from Nick Marsh)

Latent marks on firearm with 254nm

A ceramic vase multi faceted with latent marks recovered using 254nm and integration feature

(Picture courtesy from Nick Marsh)

Description

Full Spectrum Imaging System FSIS-II Lab

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Features

FSIS-II is the most advanced forensic image capturing system in the world. The FSIS-II features a patented 20MP digital camera with 50mm quartz UV lens. Now, for the first time, the new FSIS can capture an image in FULL COLOR in 5K! With over 20 megapixels of resolution and sensitivity from 254nm to 1100nm, the FSIS-II can easily capture a full handprint at 1000 PPI (pixels per inch), and micro evidence up to 4,800 PPI. There is absolutely no limit to the various types of evidence that can be processed using the FSIS-II.

FULL RESOLUTION FRAME RATE HAS INCREASED UP TO 18 F/S – WHEN EXPOSURE IS SET TO 55MSEC OR LESS
FAST SCAN FRAME RATE HAS INCREASED UP TO 60 F/S – WHEN EXPOSURE IS SET TO 17MSEC OR LESS
ZOOM FOCUS FRAME RATE HAS INCREASED UP TO 142 F/S – WHEN EXPOSURE IS SET TO 7MSEC OR LESS
FULL RESOLUTION HAS INCREASED BY 25% NOW 20MP
AST SCAN RESOLUTION HAS INCREASED BY 25% NOW 2.2MP
THE 1000 PPI IMAGING AREA HAS INCREASED NOW 5.4″ BY 3.6″
MAXIMUM RESOLUTION HAS INCREASED TO 4,800 PPI AT 4.2″ DISTANCE AT 254NM
HDR ENHANCEMENT AVAILABLE IN LIVE VIDEO AND IMAGE CAPTURE HDR CAPABILITY OFFERS GREATER DETAIL IN DARK IMAGES

Specifications

Apple iMac All-In-One Computer (running Windows 10) Intel Six-Core 3.2GHz, 8GB RAM, 1TB Hard Drive, with a 27 inch 5120 x 2880 pixel (5K) display, a tethered mouse and keyboard
20MP Digital FSIS-II camera, w/ 20 Megapixel resolution able to image a 5.4″ by 3.6″ area with 1000 PPI resolution from 254nm to 1100nm. Able to capture FULL COLOR 24 bit images (60MB file size). Camera is pre-threaded for optional tripod mounting.
Patented Curved Surface Software
Integrated Foot Pedal (for hands-free image capture)
Articulating Camera Arm
Flexible Arm for Light Source
50mm UV Lens with Universal Filter Holder
365nm UV Bandpass Filter
445nm Blue Bandpass Filter
695nm IR Filter
3 Position Filter Slider includes: 254nm UV, 550nm Orange, 830nm IR Filter
Shortwave (254nm) UV Light
3 watt, 365nm (UV) LED (optional)
3 watt, 455nm (Blue) LED (optional)
3 watt, 525nm (Green) LED (optional)
3 watt, 625nm (Red) LED (optional)
3 watt, 850nm (IR) LED (optional)
Chargers for Flashlights (12V, 100-240VAC)
UV Face protection shield
UV and Orange Goggles
2 Year Manufacturer Warranty