Resources Contact Us Home
Surface light source element and liquid crystal display device, sign device and traffic control sign device using same

Image Number 4 for United States Patent #6099135.

A surface light source device, comprising a light source (2); a light conductor (1) which has a light incident face (11) on at least one side end surface thereof which confronts the light source (2), and a light emitting face (12) on one surface thereof which is substantially perpendicular to the light incident face (11); and a light angle varying sheet (3) which is disposed at a side of the light emitting face (12) of the light conductor (1), wherein at least one of the light emitting face (12) and a back surface (13) of the light conductor (1) comprises a minute structure having an average slant angle of 0.5 to 7.5 degrees. The light angle varying sheet (3) may comprise a prism sheet having a plurality of prisms (31) which are formed parallel to one another on at least one surface thereof. The minute structure may comprise a roughened surface which includes a plurality of fine convex members each having a substantially spherical surface or a plurality of prism arrays having slant surfaces which extend parallel to said light incident face (11) and which have an average slant angle of 0.5 to 7.5 degrees.

  Recently Added Patents
Apparatus and method for an iterative cryptographic block
System and method for a TCP mapper
Selecting from a plural of energy saving modes
Reliable event broadcaster with multiplexing and bandwidth control functions
Metal-doped oxide, method of preparing the same, and solid oxide electrolyte using the metal-doped oxide
Cationic polymers for antimicrobial applications and delivery of bioactive materials
Methods for processing 2Nx2N block with N being positive integer greater than four under intra-prediction mode and related processing circuits thereof
  Randomly Featured Patents
Seperable point of sale system
Control apparatus and method for engine/electric hybrid vehicle
Dealer inventory management system
Device and method for alignment of an automobile body
Piezoelectric filter, its manufacturing method, and intermediate frequency filter
Fibrous-reinforced sheet
Diesters of hexene-1,6-dioic acids produced from 1,2-dialkoxy-3-butenes/co
Battery socket for smoke detector
Computer graphics using meshless finite elements for light transport
Curable polyphenylene ether-thermosetting resin composition and process