Absolute Measurement of Wrinkle Depth by Light Transmission of a Silicone Replica - Skin-Visiometer® SV 600
Quite well established, accurate, very economical and easy to handle measurement method to evaluate the topography of the skin surface by light transmission of a very thin, especially blue dyed silicone. The very viscous two part silicone, mixed under vacuum to avoid bubbles, fills even smallest skin depths and reproduces them in detail.

Assessing the Skin Topography by Replica
The device features a parallel light source and a b/w CMOS-camera with 640 * 480 pixels. The replica is placed between these. The light absorption of the blue color is known. When the light penetrates the replica, it is absorbed according to the thickness of the silicone material. The replica reproduces the heights and depths of the skin as a negative, i.e. wrinkles are higher in the replica as the silicone is thicker in this place.

The Measuring Principle
The amount of absorbed light is calculated by Lambert and Beer’s Law. The outgoing light is proportional to the incoming light, the thickness of the material and the material constant k.

Advantages
An image digitalization unit which is in the same housing as the light transmission unit and connected to the computer via a USB interface and shows the heights and depths of the replica by a corresponding classification on a grey scale (256 different grey values), thus the depths of each pixel can be calculated in µm by the special software.
This special measurement method allows many functions and the calculation of various different skin parameters within one second: Lines can be drawn on the images and the profile and the results are shown immediately.
The standard roughness parameters Rt, Rm, Rz, Rp and Ra for up to 180 lines arranged vertically, horizontally or circularly are immediately available.
A coloured 3D image can be displayed quickly.
Special parameters have been created to describe the skin topography volume (mm²) and unfolded surface in %.
All results can be stored printed out together with the images and are automatically available for statistical purposes (e.g. Excel®).
Easy and quick calibration of the system is possible at any time.
The skin camera Visioscan® VC 98 with its analysing software SELS (Surface Evaluation of the Living Skin) is also a useful addition to the system. A macro function allows the analysis of many replicas at the same time.

Technical Data
Power Supply: 100-240 V AC, 0.3 A, 50-60 Hz, Dimensions: 26 x 24 x 7 cm , Weight: 3.00 kg , Measuring Area: approx. 7.5 x 5 mm, Resolution: 640 x 480 pixel on the PC screen, Interface: USB
Technical data may be made without prior notice.