Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Methods and systems for delivering customized advertisements
Method for processing power headroom and terminal thereof
Data recording apparatus with recording control based on defect block and control method thereof
Digital photographing apparatus
Lamp body with integrally molded heat sink
Modified binding proteins inhibiting the VEGF-A receptor interaction
Bessel beam plane illumination microscope
  Randomly Featured Patents
Semiconductor apparatus and semiconductor apparatus manufacturing method
Wood burning boiler
Parking area divider
Rainwater channel drain
System and method for replacing degenerated spinal disks
Cove base cutter guide
Method and apparatus for a declarative representation of distortion correction for add-on graphics in broadcast video
Trochlear resurfacing system and method
Trailer lifting foot extender
Pick hole guard for manhole covers