Headband with adjustable device for positioning an optical device

A positioning device for an optical device is formed of two substantially parallel mounting plates which extend laterally outward from a headband. Each mounting plate has two vertically elongated slots cut in it. The slots closest to the headband (proximal) are in alignment with each other, as are the distal slots on the two mounting plates. Attached to the headband between the two mounting plates is an adjustable stop, such as a threaded rod and nut. The mounting plates and adjustable stop accept an optical device such as an ophthalmoscope having a mounting block affixed to a surface thereof. The mounting block is formed from a body having a hole extending therethrough for receiving a pivot pin. The hole is substantially parallel to the surface of the optical device to which the mounting block is affixed. The mounting block also has two spring loaded balls disposed partially within the body at opposing ends of a line through the body which is parallel to the hole in the body and located below the hole. The mounting block is inserted between the mounting plates, and the pivot pin is inserted through the proximal slot in the first mounting plate, the hole in the body of the mounting block and the proximal slot in the second mounting plate. When fixed to the mounting plates, the position of the mounting block relative to the elongated slots is fixed against unintentional movements by a friction washer or spring. The mounting block pivots into a position resting against the adjustable stop. This position can be changed to accommodate the wearer of the headband. To move the optical device out of the way, the device and mounting block are pivoted upward until the spring loaded balls engage with the distal slots in the mounting plates.