Binocular view finder enabling a wide field of vision, 60 DEG vertically by 120 DEG horizontally, to be obtained. It is constituted, for each monocular vision channel, by an image generator (1A), for example a miniature cathode ray tube, by an optical relay (2A), by a collimation and combination optical system bringing together a holographic (H1) mixer plate (3A) for transmitting the landscape channel and reflecting the image channel and by a biconvex combining device (4A) formed from two holographic spherical optical elements (41, 42) used on the axis (H2, H3) for transmitting the two channels with collimation by diffraction of the image channel. A circular axial zone of zero photometric yield is produced for each monocular vision and is compensated by the overlap of the binocular fields of vision and, additionally, by the production of hologram mirrors having variable-index modulation. IMAGE
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