CCS's CNR-110NW natural-light LED ring light, available from Stemmer Imaging, has a colour rendering index (CRI) of Ra98, offering the closest approximation to illumination by sunlight (CRI Ra100).
Stemmer claims this gives a more accurate colour representation for medical imaging and scientific imaging than is possible using other illumination sources.
The CNR-110NW is compatible with stereomicroscopes from a number of manufacturers.
It features a collective lens to ensure bright illumination over the field of view.
An outstanding light intensity of 35,000lx can be achieved at a working distance of 110mm.
In addition, the CNR-110NW emits only minimal amounts of UV and infrared radiation, reducing eye strain and minimising colour fading or other damage to the illuminated objects.
The apparent colour of an object is a function of the spectral distribution of the illumination source.
The natural light LED has a similar broad spectral distribution to sunlight, unlike other illumination sources such as fluorescent light and common white LEDs, which have peaks at specific wavelengths in their spectral distributions.
The new ring light features a mounting method that eliminates the need to reduce the working distance under the objective lens.
A low-power consumption of 5.7W and a lifetime in excess of fluorescent lights ensure low running costs.
