Invention Grant
US07847869B2 Autostereoscopic display with fresnel lens element and double sided prism adjacent a backlight having a transmission surface with opposed first and second light sources alternately modulated at 90 Hz 有权
具有菲涅尔透镜元件和双面棱镜的自动立体显示器与背光源相邻,所述背光源具有透射表面,所述透射表面具有以90Hz交替调制的相对的第一和第二光源

  • Patent Title: Autostereoscopic display with fresnel lens element and double sided prism adjacent a backlight having a transmission surface with opposed first and second light sources alternately modulated at 90 Hz
  • Patent Title (中): 具有菲涅尔透镜元件和双面棱镜的自动立体显示器与背光源相邻,所述背光源具有透射表面,所述透射表面具有以90Hz交替调制的相对的第一和第二光源
  • Application No.: US12786669
    Application Date: 2010-05-25
  • Publication No.: US07847869B2
    Publication Date: 2010-12-07
  • Inventor: John C. NelsonRobert L. Brott
  • Applicant: John C. NelsonRobert L. Brott
  • Applicant Address: US MN Saint Paul
  • Assignee: 3M Innovative Properties Company
  • Current Assignee: 3M Innovative Properties Company
  • Current Assignee Address: US MN Saint Paul
  • Main IPC: G02F1/1335
  • IPC: G02F1/1335
Autostereoscopic display with fresnel lens element and double sided prism adjacent a backlight having a transmission surface with opposed first and second light sources alternately modulated at 90 Hz
Abstract:
An autostereoscopic display is described. The autostereoscopic display apparatus includes a backlight having opposing first and second light input surfaces and a light transmission surface extending between the opposing first and second light input surfaces and a right eye light source located to provide light into the first light input side and a left eye light source located to provide light into the second light input side, wherein the left eye light source and the right eye light source are configured to be modulated between the left eye light source and the right eye light source at a rate of at least 90 hertz. A double sided prism film is adjacent to the light transmission surface. The double sided prism film has a plurality of linear prism features on a first major surface and a plurality of lenticular features on a second major surface. The first major surface opposes the second major surface. The double sided prism film is disposed between the light transmission surface and a Fresnel lens element. A liquid crystal display panel is positioned to receive light transmitted through the double sided prism film.
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