公开(公告)号：US3669673A

公开(公告)日：1972-06-13

申请号：US3669673D

申请日：1970-10-23

Applicant: RCA CORP

Inventor： IH CHARLES CHUNG SEN ,  LURIE MICHAEL JAY

IPC: G02B5/18 ,  G03H1/02 ,  G03C5/00

CPC classification number: G02B5/1842 ,  G03H1/02 ,  G03H2001/187 ,  Y10S359/90

Abstract: A RECORDING MEDIUM BLANK IS EMPLOYED COMPRISING A SUBSTRATE HAVING A DIFFRACTION GRATING, COMPOSED OF A PLURALITY OF SPACED LINE RIDGES, ON A SURFACE THEREOF, TOGETHER WITH A PHOTORESIST DISPOSED ON THIS SURFACE WHICH FILLS THE SPACES BETWEEN ADJACENT LINE RIDGES. THIS PROVIDES A SUBSTANTIALLY SMOOTH EXTERIOR SURFACE OF THE PHOTORESIST WHICH IS SITUATED IN PROXIMITY WITH THE RESPECTIVE TOPS OF THE LINE RIDGES MAKING UP THE DIFFRACTION GRATING. BY EXPOSING SUCH A RECORDING BLANK TO A FOCUSED IMAGE OF ANY COMPLEX OBJECT AND THEN DEVELOPING THE PHOTORESIST, A DIFFRACTION GRATING WITH MODULATED EFFICIENCY IS FORMED, CONSTITUTING A SYNTHETIC FOCUSED IMAGE HOLOGRAM; WHICH DISPLAYS THE ORIGINAL FOCUSED IMAGE WHEN PROPERLY VIEWED. A STAMPING MASTER, WHICH CAN BE PREPARED FROM THIS MODULATED GRATING RECORD, IS USEFUL IN EMBOSSING REPLICATIONS ON THERMOPLASTIC MATERIAL, SUCH AS VINYL FOR INSTANCE.

公开(公告)号：US3632869A

公开(公告)日：1972-01-04

申请号：US3632869D

申请日：1969-11-25

Applicant: RCA CORP

Inventor： BARTOLINI ROBERT ALFRED ,  LURIE MICHAEL JAY

IPC: H04N5/89 ,  G03H1/26 ,  G02B27/00 ,  H04N3/00

CPC classification number: G03H1/26

Abstract: In a motion picture record in which successive frames of a motion picture are manifested by a series of successive holograms, such as phase holograms, greater redundancy and a saving in record material are achieved by having each one of the holograms partially overlap both the hologram which immediately precedes and the hologram which immediately succeeds that hologram in the series. The problem of unwanted spatial beat frequencies, which results from such overlap and is dependent on the amount of such overlap, can be eliminated by restricting the amount of overlap to a value such that the minimum spatial beat frequency is less than the ultimate resolution of the playback system (e.g. closed circuit television) employed in reconstructing the motion picture from the motion picture record.

Abstract translation: 在运动图像记录中，运动图像的连续帧由一系列连续的全息图（例如相位全息图）表现，更大的冗余度和记录材料的保存通过使全息图中的每一个部分地重叠两个全息图 紧接在全息图之前，立即成功地将该全息图成功地连续播放。 可以通过将重叠量限制为使得最小空间拍频小于最小分辨率的值来消除由这种重叠产生并且取决于这种重叠的量的不需要的空间拍频的问题 用于从运动图像记录重建运动图像的再现系统（例如闭路电视）。