Micro Four Thirds Lens Mount

grabcad

This is a model of the standard Micro Four Thirds lens mount. This is the male portion of the mount that is attached to the rear of a Micro Four Thirds lens. Dimensions were taken from the lumix G Vario 45-200mm f4-5.6 lens mount, measured by myself and my trusty 4 decimal Mitutoyo caliper. The CAD was composed in Solidworks 2013. The renders were done in keyshot. There are IGS, Step, STL and technical drawing files available for download. Enjoy!Some interesting notes about the Micro Four Thirds mount: - I have noticed quite a variation in official Micro Four Thirds lens mounts. It seems that the thickness of the three flanged lobes that make up the mount are different per manufacturer. I am finding that Voigtlander/Cosina (49 thou) has a thicker flange than Panasonic (47 thou), Panasonic has a thicker flange than Olympus, and flanges on cheap third party mounts are about 41 thousandths thick and are not chamfered. Granted, heavier lenses may counteract the leverage placed on the mount by having a more rigid mount and thus thicker flanged lobes. - The bottom-most screw on the micro 4/3 lens mount, which is used to secure the 11 position electrical contact strip assembly, is co-linear to the red orientation dot on the exterior of the lens.- The overall outer diameter of u43 mount on weather-sealed lenses is smaller than traditional non-sealed lenses. This is to account for a small rubber o-ring which acts as the lens mount seal for the weather-sealed lens.