LaVision offers a wide range of high quality standard lenses covering a range of working distances and fields of view. Please consult with your LaVision representative which one can meet your requirements.
The Zoom Lens System with 12x magnification range consists of a main lens body and a variety of attachments to get application-specific working distances and fields of view. The Zoom Lens System design has an advantage over conventional photographic lenses due to its versatility in variations of working distances and magnifications.
The Long Distance Microscopes allow an extremely high magnification and resolution while maintaining a long working distance. Due to the special telescope design a large variability in field of view and remarkable depth of field can be achieved. The use of high quality mirrors is an advantage over lens systems in terms of linearity and chromatic correction. This makes them ideal optics for high resolution imaging applications.
For high temperature applications LaVision offers a specific camera filter intended for use in combination with the blue LED illumination units. You will also find the right filter for the use of UV or polarized light in our accessories program.
To eliminate glare and specular reflections from the specimen surface and greatly improve usability and result quality.
Metallic or shiny surfaces can create unwanted specular reflections which can confuse the correlation algorithms. Such reflections may not be visible at the start of a test but as the specimen deforms, the local light incidence changes and these bright spots can occur. The polarization light upgrade kit includes the necessary filters for the standard LED illumination units. In combination with optical filter rings for the camera lenses this configuration significantly reduces this effect thus improving data quality.
Covered by Patent EP1739403B1
If the specimen has a reflective surface, complex geometry, or undergoes large deformation during the experiment, shadows or reflections may occur on the specimen surface. This can make image evaluation difficult.
An alternative approach to white light illumination is Ultra-Violet (UV) light. When UV light is combined with a matching filter for the camera it is possible to avoid the potential issues described above. In order to use UV light the specimen surface must be prepared with a suitable speckle pattern: this can be achieved with fluorescent paint matched to the light characteristics. UV speckle is robust and stable over time irrespective of the specimen’s movement, and through the use of a matched filter, changes in ambient lighting do not affect the image quality.
LaVision’s UV LED Panel offers a compact light capable of illuminating small or large areas together with matched camera filters and speckle application kit.