公开(公告)号：DE69425610T2

公开(公告)日：2001-04-26

申请号：DE69425610

申请日：1994-06-08

Applicant: IBM

Inventor： GOODMAN DOUGLAS SEYMORE ,  HODGSON RODNEY TREVOR ,  LIPSCOMB JAMES SARGENT ,  LOY MICHAEL MING-TAK ,  WOLFE JR

IPC: F21V8/00 ,  G02B27/22 ,  G02F1/1335 ,  G02F1/13357 ,  G06F1/16 ,  G09F9/00 ,  H04N13/00 ,  H04N13/04

Abstract: A display assembly includes a display screen having a predetermined generally planar area for displaying transmissive data. A light source is provided for generating light of predetermined intensity, and a circular Fresnel lens is disposed between the light source and the display means, the circular Fresnel lens imaging the light source through the display means and onto an opposite side of the display means. A diffuser is disposed between the light source and the display means for diffusing the light. The intensity of the light source is selected to be appropriate for direct human viewing of the transmissive data.

公开(公告)号：DE69425610D1

公开(公告)日：2000-09-28

申请号：DE69425610

申请日：1994-06-08

Applicant: IBM

Inventor： GOODMAN DOUGLAS SEYMORE ,  HODGSON RODNEY TREVOR ,  LIPSCOMB JAMES SARGENT ,  LOY MICHAEL MING-TAK ,  WOLFE JR

IPC: F21V8/00 ,  G02B27/22 ,  G02F1/1335 ,  G02F1/13357 ,  G06F1/16 ,  G09F9/00 ,  H04N13/00 ,  H04N13/04

Abstract: A display assembly includes a display screen having a predetermined generally planar area for displaying transmissive data. A light source is provided for generating light of predetermined intensity, and a circular Fresnel lens is disposed between the light source and the display means, the circular Fresnel lens imaging the light source through the display means and onto an opposite side of the display means. A diffuser is disposed between the light source and the display means for diffusing the light. The intensity of the light source is selected to be appropriate for direct human viewing of the transmissive data.