New Binocular Loupe
Three-power magnifying lenses, providing stereoscopic vision, are mounted on the end of a bar extending out from the specially designed frame and bridge.
A flip of the finger throws the magnifier up and out of the line of vision when desired. Even when worn constantly, however, comfort is assured by the method of construction, which permits the accurate fitting of the frame by changing bridge width and interpupillary distance for individual cases.
The loupe is essentially a spectacle frame with an ingenious aluminum block in place of a brige. Round eyewires are mounted on slotted bars and held to the bridge block by a set screw. By loosening the set screw each eyewire can be adjusted separately to get the proper interpupillary distance for the wearer. The extra large pads are also mounted on the bridge block so that their separation may be adapted to the individual. Proper adjustments are made by competent fitters when the loupe is purchased.
When the user ordinarily wears correcting lenses these may be mounted in the eyewires and the proper adjustments made for bridge width and interpupillary distance. Or, if preferred, the loupe can be worn over regular glasses and the eyewires left blank. After the loupe is fitted the wearer can adjust the separation of the magnifying lenses to suit himself.
In the professions of surgery, dentistry ophthalmology and other branches of medicine a three-dimensional magnified view of an object is often desired. This is no less true for laboratory workers, artists, etchers, engravers, clock and watch makers, photo-engravers, diamond setters, locksmiths, and in the retail, wholesale, and manufacturing jewelry establishments. The new loupe is believed to embody all the desired qualities that provide comfort for workers requiring magnification for close work.