Process for the optoelectronic transmission of an image

A system for optoelectronic transmission of a subject image (1) which radiates in at least two mutually different wavelength ranges and/or wavelength distributions having means for reproducing the subject image (1) including photoelectric transducer means (6) provided with a photosensitive surface (11), a lens (2) and optical picture splitter means (3) for simultaneously projecting two images (4,5) of the subject image on the photosensitve surface (11), and raster scanning means for converting the two reproduced images (4,5) into two electric video signals (9,10), said two images (4,5) being positioned side by side and mutually symmetrically on said surface (11) with symmetrical brightness distribution and scanned by said scanning means along scanning rasters (7,8) that are also substantially mutually symmetrical, said picture splitter means (6) comprising a geometric-optically homogeneous element having a partly transmissive reflecting plane (14), and two fully reflective lanes (15, 16) respectively in front of and behind the partly transmissive reflecting plane (14) , the two fully reflective planes intersecting each other on an intersection line extending through the partly transmissive plane (14) at equal inclination angles (.alpha.) thereto.

A method of transmitting a multi-colored image (1) of a subject, including the steps of:

• optically splitting said subject image into two mirror images of each other (4,5) reproduced on a surface (11) of a transducer (6) in mutually symmetrical relation to a geometrical axis (12) of the transducer;
• and scanning said two mirror images on said surface of the transducer along scanning rasters (7,8) also arranged in substantially mutual symmetrical relation to said geometrical axis of the transducer to produce two corresponding video signals (9,10).

In a method of transmitting a multi-colored image (1) of a subject by optically splitting the subject image into two mutually symmetrical images (4,5) that are scanned to produce two corresponding video signals (9,10), said optical splitting of the subject image, including the steps of:

• projecting an incident beam from said subject image onto a partially transmissive reflecting plane (14) through which the beam is partially transmitted and from which the beam is partially reflected;
• intercepting the partially transmitted and reflected beams on two fully reflective planes (15,16) intersecting each other on the partially transmissive reflecting plane at equal angles (.alpha.) thereto;
• and receiving the two images on a common scanning surface (11) onto which the beams are reflected from the two fully reflective planes.

In a color video camera of the type employing a single color pick-up tube having a geometrical axis intersecting an image surface on a line of symmetry with respect to which symmetrical image distortion and sensitivity variation occurs, the improvement comprising optical means receiving a light image and dividing the same into two mirror images of each other with respect to said line of symmetry on the image surface, and scanning control means for said pick-up tube causing the mirror images on said image surface to be scanned in substantially symmetrical relation to each other relative to said line of symmetry.