Surface light source and manufacturing method for the same and apparatus using the same device

Surface light source and manufacturing method for the same and apparatus using the same device

  • CN 1,967,296 A
  • Filed: 02/27/2001
  • Published: 05/23/2007
  • Est. Priority Date: 02/28/2000
  • Status: Abandoned Application
First Claim
Patent Images

1. planar light source device has light source and makes the light that imports from this light source expand to planar and penetrate the light guide plate of going from light-emitting face, it is characterized in that,In the light-emitting face of above-mentioned light guide plate or its relative one side at least one face, form the grating of a plurality of spills, above-mentioned grating has so that the deflecting slant surface that the mode that the normal towards light guide plate inside tilts to the configured light sources direction tilts, when when seeing perpendicular to the direction of the light-emitting face of above-mentioned light guide plate, light each locational direct of travel in light guide plate collects in same directionThe length direction of the grating of above-mentioned spill is arranged on the direct of travel perpendicular to the light in the above-mentioned light guide plate, and, from direction, be bending along the length direction of the grating of above-mentioned spill perpendicular to the light entrance face of above-mentioned light guide plate, on this length direction, has simultaneously identical sectionOn the plane perpendicular to the light-emitting face of this light guide plate of the direct of travel of light, the crest line of above-mentioned deflecting slant surface is linearly in comprising this light guide plate.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×