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
Query optimization with awareness of limited resource usage
Subscribing to content
Optical multiplexer/demultiplexer
Image sensor with improved color crosstalk
Monitoring activity of a user in locomotion on foot
Reduced sorbent utilization for circulating dry scrubbers
Method for assembling a camera module, and camera module
  Randomly Featured Patents
Usage monitor reliability factor using an advanced fatigue reliability assessment model
Brake assembly for dental tray support arm
Furniture unit
Lawn bag stand
Structural shroud system incorporating a pyrotechnic
Lighting device with switchable day/night illumination mode
Embossing device, such as a cylinder or a sleeve
Method of stabilizing an image sequence
Surfboard protector
Accelerometer in closed loop with error detection