TELEVISION TRANSMISSION OF HOLOGRAMS WITH REDUCED RESOLUTION REQUIREMENTS ON CAMERA TUBE

This paper proposes a technique for the television transmission of a hologram of a two‐dimensional transparency. The spatial resolution required on the camera tube is reduced by a factor of four compared with the transmission of a conventional off‐axis reference beam hologram. The resolution required is therefore no higher than that required for the direct transmission of the transparency itself. Implementation of the proposed arrangement should be easy. Three holograms formed with an on‐axis reference beam are transmitted. The phase of the reference beam assumes the values 0°, 120°, and 240° for the first, second, and third hologram, respectively. The carrier‐frequency hologram is “synthesized” from these three on‐axis holograms at the receiver. The technique has the further advantage that the undesirable zero‐order terms are eliminated. © 1969 The Bell System Technical Journal