BINOCULARS Russian patent published in 1998 - IPC

FIELD: optical instruments, in particular, telescope glasses and binoculars. SUBSTANCE: each device channel has lens unit which has spherical prism 1 with mirror spherical surface 2 and additional prism 3 which is spaced from spherical prism 1 by thin air gap. In addition device has inverting rectangular prism 4 and ocular unit which has prism 5 and spherical prism 6 with mirror spherical surface 7 as in design of lens unit. Symmetry axis 8 of rectangular prism 4 is located at angle with respect to sighting line 9. EFFECT: increased functional capabilities. 2 cl, 1 dwg