Patent ID: 6020997
Filing Date: 2000-02-01
Classification: G02B

Abstract:
An optical device comprising:a front support including a first optical means;a rear support including a second optical means;a spacing means extending between the front support and the rear support;the front support and the rear support having respective mounting edges, and being pivotably mounted to the spacing means at their respective mounting edges;each of the front support and rear support having a free edge located opposite to the mounting edge, the front support and the rear support being foldable between a storage configuration and an operative configuration in which the first optical means and the second optical means are in substantial alignment, the sum of the maximum width of the front support from its mounting edge to its free edge and the maximum width of the rear support from its mounting edge to its free edge is less than the dimension of the spacing means between the mounting of the front support and the mounting of the rear support such that in the storage configuration, the front support and the rear support lie substantially against the spacing means in a common plane and the free edge of the front support is slightly spaced from the free edge of the rear support, said free edges being complementary in shape.