Light guiding plate and flat optical source device

Details Light guiding plate and flat optical source device Light guiding plate and flat optical source device

1995-12-06

1998-11-10

Morgan, Eileen P.

Abrading

Abrading process

Utilizing shield

451 30, 451 31, B21C 104

Patent

active

058335170

ABSTRACT:
A gradation pattern is formed by sandblasting a surface of a transparent substrate. The gradation pattern comprises countless recesses formed by eroding the surface structure. The distribution density of the recesses is low in the vicinity of sides on which primary illuminating light is incident, and high in the center of the pattern. As the original flat and smooth aspect of the plate is maintained between the recesses, the light guiding performance of the plate is maintained. By adjusting the gradation pattern, any desired bright/dark pattern can be obtained. The cost of manufacturing a light guiding plate and flat optical source device is reduced. A large illumination area having a high uniform brightness is made possible by sandblasting. And many applications and modes of use which were impossible with a conventional light guiding plate having a printed pattern, are now possible.

REFERENCES:
patent: 4093754 (1978-06-01), Parsons
patent: 4237209 (1980-12-01), Oliver
patent: 4828893 (1989-05-01), Tallman
patent: 5069004 (1991-12-01), Gillenwater
patent: 5423713 (1995-06-01), Mishima

Affiliated with

Also associated with

Rating

Light guiding plate and flat optical source device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light guiding plate and flat optical source device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light guiding plate and flat optical source device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1511227