In the field of cold light illumination, Volpi was crucially involved in the development of achievements which are a matter of fact in microscopy today.
Crescent diaphragm for mechanical dimmer
Volpi patent
The simplest ideas are often the most ingenious. With the crescent diaphragm, Volpi registered a patent for mechanical dimming of light with a constant light color (color temperature). Turning the handwheel on the front side of the housing rotates the crescent diaphragm in front of the halogen lamp. This way, the light can be dimmed to a minimum. At the same time, the color temperature remains constant as per the designated intensity at every position of the crescent diaphragm. Naturally, the intensity of the light can also be electronically controlled (on the housing or via RS232). However, this method of dimming also changes the light color.
Sliding sleeve for protecting against fiber breaks in light guides
Volpi patent
Semi-rigid light guides (goosenecks and incident guides) undergo a lot of stress in daily use. Previously, glass fibers were simply coated and firmly connected to the outer sleeve. Frequent twisting and setting in extreme positions could cause the glass fibers in the interior of the light guide to break. With the sliding sleeve, Volpi developed a reliable protection mechanism for mobile light guides and registered a patent for them. Once again, a simple principle with an optimum result. The glass fibers are now located in a sliding sleeve which is hung “loosely” inside the heavy-duty outer skin. The sliding sleeve has play and can slide back and forth within the outer sleeve during heavy twisting. The force is transmitted to the moveable sliding sleeve and not to the sensitive glass fibers.
Volpi Product Catalog
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