Surface light source device

Details Surface light source device Surface light source device

1997-03-11

1999-05-04

Sember, Thomas M.

Illumination

Revolving

362331, 385 27, 385 31, 385146, 349 62, G02B 626

Patent

active

058995528

ABSTRACT:
A light incident into a wedge type light scattering conducting element from a light incident surface of the light scattering conducting element is converted into a light flux having a directionality and is output from a light output surface. The output light is input to a wedge type emitting direction characteristic adjusting element arranged with a positional relationship complementary to the light scattering conducting element. A prism shaped irregularity for adjusting a propagating directionality of the light in longitudinal/transverse directions is formed on a light input surface/light output surface of the wedge type emitting direction characteristic adjusting element. The wedge type emitting direction characteristic adjusting element has a weakened scattering power depending on requirements, thereby a degree of directionality sharpness of the light emitted from a surface light source device is adjusted. Various modifications are provided for the light scattering conducting elements, and regions having different scattering powers are combined for various patterns. The device is useful for A backlight source.

REFERENCES:
patent: 5295048 (1994-03-01), Park et al.
patent: 5542017 (1996-07-01), Koike
patent: 5548670 (1996-08-01), Koike
patent: 5580932 (1996-12-01), Koike
Partial English translation of Japanese Reference No. 63-63083, already of record, copy attached.
Partial English translation of Japanese Reference No. 51-89888, already of record, copy attached.
"Polymer Reprints, Japan vol. 41, No. 3," (1992), p. 802.
"Polymer Reprints, Japan vol. 41, No. 7," (1992), pp. 2945-2947.
"High Brightness Light Scattering Transmission Body", Yasuhiro Koike et al., Polymer Reprints, Japan, vol. 41, No. 7, (1992), p. 2944.
"High Brightness Light Scattering Transmission Body and Its Structure", Megumi Izuhara et al., Polymer Reprints, Japan, vol. 41, No. 7, (1992), pp. 2945-2946.

Affiliated with

Also associated with

Rating

Surface light 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 Surface light source device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface light source device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1864194