Visioscan® VC 20plus

• The Measuring Principle

  The Visioscan® VC 20 plus features a unique UV-A LED illumination (proven to present no hazard to normal human skin) in a small, easy-to-handle, ergonomically designed plastic casing. The light is homogenously distributed by a reflector. In addition, the camera consists of a high-resolution b/w video sensor chip, an objective and the new “liquid lens technology”, an electronically controlled lens which automatically adapts to the skin surface distance and maximizes the range of depth of field.

   

  The results are impressive, non-glossy images of the skin surface (size approx. 10 x 8 mm) displayed in 255 grey levels. Wrinkles and lines appear dark and skin scaliness can be seen as very bright pixels. The software analyses the image regarding a variety of topography parameters.

  

  

• Advantages of the Visioscan® - Camera

  The latest Visioscan® generation with improved hard- and software offer a multitude of possibilities:

  

  

  • The evaluation method SELS® (Surface Evaluation of the Living Skin - developed by the Institute for Experimental Dermatology, Prof. Tronnier, University of Witten-Herdecke, Germany) analyses the grey level distribution and allows the calculation of four clinical parameters to quantitatively and qualitatively describe the skin surface as an index: Skin smoothness (Sesm), Skin roughness (Ser), Scaliness (Sesc), Wrinkles (Sew).

  

  

  • In addition to the valuable SELS® calculations also other interesting parameters can be calculated: lines can be drawn on the images and the profile and the results are shown immediately. Roughness indexes for up to 180 lines arranged vertically, horizontally or circularly are immediately available.
  • Special parameters have been created to describe virtually the skin topography volume (mm²) and unfolded surface in %.
  • Ageing parameters as anisotropy (directionality of the lines) and cell size (polygons between the visible lines) are at your disposal.

  

  

  aged skin, deep directional lines, less and larger polygons between the lines

  younger skin, lines in all directions visible, low anisotropy and more polygons between the lines

  • Draw lines and free-hand objects in the picture. They can be measured accurately (e.g. length of hair after shaving, Hair thickness, pigmented spots and lesions, etc.).

  

  

  • Evaluation of desquamation (scaliness/dryness) of the skin with the foil Corneofix® F 20. A desquamation index is calculated.
  • Determination of sebum production with the foil Sebufix® F 16. The sebum production of each sebum gland can be monitored impressively in real time on the screen.

  

  

• Fields of Application

  The applications of this flexible tool are without limitation.

   

  • The Visioscan® is indispensable for efficacy testing and claim support for cosmetics, pharmaceuticals and detergents especially in regards to roughness and skin surface topology.
  • Typical claims (examples) substantiated with the Visioscan®: anti-wrinkle, anti-aging, smoothing, rejuvenating, anti-roughness, hydrating, against dry/scaly skin, exfoliating, and more.
  • Dermatological basic research in humans and animals.
  • Occupational medicine: to monitor the state of the skin and show the importance of skin protection products.
  • Many other applications.

   

   

  

• Technical Data

  Dimensions camera: 5.0 x 5.8 x 12.6 cm

  Weight: approx. 230 g

  Cable length: approx. 1.5 m

  Sensor resolution: 1/2" B/W CMOS-sensor 1.3 MP (1280 x 1024 pixels)

  Image size: approx. 10 mm x 8 mm

  Objective: 20 mm

  Aperture: 2.8 mm

  Depth of focus: (calculated) approx. +/-0.05 mm

  Illumination: UVA LEDs (390-395 nm), Illumination/standby-timer with motion sensor and capture button

  Measurement uncertainty for length measurements: < 50 µm (vertically: 0.44 %, horizontally: 0.50 %, but minimum 2 pixels)

   

  An electronically controlled lens will adapt automatically to the skin surface distance and maximizes the range of depth of field.

   

  Light source has been measured according to DIN EN 62471:2009-03 for photo biologic safety and belongs to the free group.

   

  Computer: Windows® 10/11, USB 2.0/3.0, performance must meet system requirements (please ask for details).

   

   

  Technical changes may be made without prior notice.