Patent ID: 8040600

Claim:
A binocular display device comprising: first and second display assemblies; a rail system for adjustably supporting the first and second display assemblies, the rail system having only two rails with a first rail slidably secured to a front region of the display assemblies, and a second rail slidably secured to a rear region of the display assemblies, one rail being positioned above the display assemblies and the other rail being positioned below the display assemblies, each display assembly being slidably mounted to one rail along a bearing length L 1 and to the other rail along a bearing length L 2 that is less than the bearing length L 1 , whereby each display assembly is slidably mounted to the only two rails; and a locking system capable of releasing the display assemblies relative to the rail system to allow the position of the display assemblies relative to each other on the rail system to be adjusted, and for locking the display assemblies at a desired position.