RUVIS
SceneScope RUVIS Devices provide more sensitivity than traditional methods of enhancement and without any treatment. Detect untreated prints on smooth, non-porous surfaces and capture in Ultra High Definition.
Product Description
Reflective Ultra Violet Imaging Systems are an integral part of the crime scene investigator‘s search for evidence. By enhancing the observation and collection of evidence including latent prints on smooth non-porous surfaces, bites, bruises, blood detection with Bluestar®, and shoe impressions, SceneScope RUVIS Devices provide more sensitivity than traditional methods of enhancement and without any treatment. Print collection can be performed on surfaces such as plastic bags, sticky side of tape, glossy magazine, photographs, linoleum tile, compact disks, credit cards, etc…Cyanoacrylate treatment will further enhance the results of SceneScope RUVIS Devices.
The two primary RUVIS applications are untreated prints on most non-porous surfaces, and cyanoacrylate (CA) fumed prints.
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Detects Latent Prints on smooth, non-porous surfaces
SceneScope RUVIS Devices allow the detection of latent prints, prior to treatment. This is possible on surfaces that reflect light very well and do not absorb prints. That is to say surfaces that are smooth and non porous. Untreated sweaty prints show as white reflective ridges on a black background. Untreated oily prints appear as strong, black ridges on a shiny background.
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Detects Cyanoacrylate Fumed Prints allowing more prints to be visualized
As surfaces become rougher or more porous, “superglueing” the print may extend the range of surfaces on which RUVIS will work. Additionally, RUVIS may help avoid over fuming since SceneScope RUVIS Devices can see the ridges after only a slight fuming.
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Shortwave Ultra Violet Light is used to illuminate the print
ALL RUVIS devices use 254nm UV light but they are not detecting fluorescence. Instead the device looks for the reflections and scatter of the 254nm light off of the fingerprint ridges.
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Angle of Light is Critical to visualizing the print
By varying the angle of incidence, the direction the light falls onto the surface, you attempt to find an angle that causes only the reflection and scatter of the fingerprint ridges to appear and the reflection off the background to disappear. Ideally, this results in an image where the ridges appear bright and the background appears dark.
Oblique Lighting
Perpindicular Lighting
Background Rejection is a major benefit when visualizing prints
Because RUVIS devices see surface detail, they only see material deposited on those surfaces, not materials “IN” the surfaces. This allows superior Background Rejection as the device does not see inks and patterns in printed material. As long as the surface does not show rises or indents, the background will disappear.
Visible Light
Shortwave UV
More prints, more time
Contrary to popular belief, RUVIS does not save time at the crime scene. While it can show whether or not a print has detail, on the proper surfaces, the RUVIS will actually detect many partial or smudged prints. RUVIS does not shorten the time you are at the crime scene; it helps you find more evidence than before.
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RUVIS: Analog vs. Digital
The first RUVIS devices utilized image intensifiers to see the very weak 254nm shorwave light. While they did a good job at detecting the images, they were not ideal fro capturing the images. The intensifiers limited the resolution of captured images to essentially “video” resolution or 480 lines. Regardless of the quality of camera attached ot the back of the unit, the image intensifier was the limiting factor. The new Digital RUVIS systems retain all of the low light level detection (actually improves on it) and provides for Ultr-High resolution, the SceneScope UHD provides 4K resolution. The following video comapares the two technologies and illustrates why we no longer offer the Analog system.
Ultra-High Resolution
The following image is only possible with a Digital RUVIS system.
Safety First
All SceneScope RUVIS Devices include eye and skin protection devices against UV radiations. All RUVIS devices include lamps that emit high-intensity shortwave ultraviolet. Exposure to these wavelengths of radiation, even reflected or diffuse, can result in serious, and sometimes irreversible, eye and skin injuries. Never aim the shortwave UV lamp at anyone. Never look directly into the shortwave UV lamp. Always wear appropriate eye and skin protection when using any RUVIS device.