Model 228 lens improves forensic UV scope
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Resolve Optics product story
Edited by the Engineeringtalk editorial team
Mar 30, 2009
Beijing Huaan Xunchi Police Equipment in Beijing, China, has selected the Resolve Optics Model 228 forensic UV lens to help expand sales of its reflected UV imaging system (RUVIS) scope.
RUVIS scopes are used by Chinese police forces for forensic and crime scene investigations.
The Model 228 forensic UV lens offers a wide field of view for high-resolution macro images
Jia Zhenglu, sales manager of Beijing Huaan Xunchi, said: 'Traditionally, our RUVIS scope has relied on a fixed-focus 78mm UV lens, image intensifier and camera to photograph latent prints before beginning processing and collection.
'We have chosen to replace the fixed-focus lens with the Resolve Optics Model 228 forensic UV lens, as it offers many advantages both in terms of performance and ease of use.' The Model 228 lens provides high performance in the UV and visible wavebands, which enables investigators to identify and focus on a target in the visible and then quickly slide the UV filter across to take images in the UV without having to refocus.
By using a telescopic focusing mount, the lens gives a large movement in an extremely compact form.
This provides the lens with the capability to image objects from infinity to 1:1.25 magnification without using add-on adapters.
Offering a wide field of view (8.3 degrees at 1:1.25 magnification up to 16.6 degrees at long object distances), the lens offers high-resolution macro images for fingerprinting and human skin damage applications in particular.
Because of its wide field of view and the high transmission qualities of the lens coatings used, the Model 228 lens is considerably more light-efficient than other longer focal length lenses offering an identical view.
The Model 228 lens offers a true high-resolution crime site macro viewing capability by imaging onto a RUVIS scope with a 1:1 lens magnification while exactly matching the optical resolution of both lens and image intensifier.
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