LIGHT-TRANSMITTING PLATE

Japanese Patent JP3497934

B2

PROBLEM TO BE SOLVED: To provide a light-transmitting plate which has neither local luminance unevenness nor luminance unevenness over the entire light emission surface and is uniform, thin, and large in area by arranging a pattern which projects primary light made incident on the light-transmitting plate efficiently from a projection surface and making the pattern fine.
SOLUTION: This is a transparent light-transmitting plate 3 which guides light from at least one end surface and many projection patterns in a spot shape, a solid-line shape, or a broken-line shape of 10-200 in sectional width W(μm) in section crossing the axis of a linear light source are arranged on a light projecftion surface with low density nearby the primary light source and with high density at a distance from the light source so that the luminance distribution of projection light from the projection surface becomes nearly uniform. Here, when the section of the projection pattern is in almost in a trapezoidal shape having straight-line parts partially, the ratio H/W of the sectional width W of the projection body and the height H is preferably 0.2-1.0 and when the section of the projection pattern is nearly arcuate and the sectional width of the ratio H/W of the sectional width W of the projection body and the height H is preferably 0.2-0.5.

JPH08211233	LARGE-DIAMETER PLASTIC OPTICAL FIBER AND ITS PRODUCTION
JP2000057831	SURFACE LIGHT SOURCE DEVICE

Toshiyuki Yoshikawa
Osamu Niihari
Toshitaka Kunizawa
Kozo Yasuda

JP33046695A

February 16, 2004

December 19, 1995

Click for automatic bibliography generation  

KURARAY CO.,LTD.

G02B6/00; F21V8/00; G02F1/13357; (IPC1-7): G02B6/00; F21V8/00; G02F1/13357

JP8315621A
JP8194219A
JP7294746A
JP7104296A
JP6250024A
JP6208113A
JP6186562A
JP625802U
JP616902U

【文献】国際公開95/006889(WO,A1)

Previous Patent: WIRE RETAINER MOUNTING STRUCTURE

Next Patent: DEVICE FOR AUTHENTICATING INDIVIDUAL