Browse Prior Art Database

Three Dimensional Display System

IP.com Disclosure Number: IPCOM000090902D
Original Publication Date: 1969-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Harris, TJ: AUTHOR [+2]

Abstract

Three-dimensional displays of the volumetric type are generated using a digital light deflector for two-dimensional writing of the image to be displayed. Digital focal length devices are utilized to obtain the proper positioning and magnification of the displayed image. Light source 1 provides beam 2 which is applied to digital light deflector 3 for writing image 4 in two-dimensional form. Deflector 3 operates under the control of X-Y address driver circuits 5. The combination of digital focal length device 6 and lens 7 generates the two extreme images 8 and 9 from image 4. Image 9 is smaller than image 8 and is displaced from it. The combination of digital focal length device 10 and lens 11 projects images 8 and 9 on diffusing screen 12. Digital focal length device 6 and lens 7 project one object into several planes.

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Three Dimensional Display System

Three-dimensional displays of the volumetric type are generated using a digital light deflector for two-dimensional writing of the image to be displayed. Digital focal length devices are utilized to obtain the proper positioning and magnification of the displayed image. Light source 1 provides beam 2 which is applied to digital light deflector 3 for writing image 4 in two-dimensional form. Deflector 3 operates under the control of X-Y address driver circuits 5. The combination of digital focal length device 6 and lens 7 generates the two extreme images 8 and 9 from image 4. Image 9 is smaller than image 8 and is displaced from it. The combination of digital focal length device 10 and lens 11 projects images 8 and 9 on diffusing screen 12. Digital focal length device 6 and lens 7 project one object into several planes. Digital focal length device 10 and lens 11 perform the opposite function. This combination takes several objects in different planes and images them on the same plane. Digital focal length device 13 and lens 14 project the object on screen 12 behind Fresnel lens 15. This provides the proper virtual image position at 16. To adjust the size of the image on screen 12, devices 6 and 10 are controlled through Z direction converter 17 which is provided with the Z address through Z driver circuit 18. This driver also controls the operation of device 13. Thus the image at 16 has the same size as image 4.

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