LIGHT REFLECTION PLATE

• Main Authors: SUZUKI OSAMU, MORITA NAGAYUKI
• Format: Patent
• Language: English
• Published: 17.08.2006
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide a light reflection plate improving use efficiency of light by eliminating brightness irregularity of light reflected by the light reflection plate without shortening a distance between light sources nor increasing the number of the light sources. SOLUTION: The light reflection plate has a plurality of chevron type bent parts 12, wherein the shape of the chevron type bent part varies in accordance with the distance from the light source 14. More specifically, the chevron type bent part has a cross-sectional shape of a triangle and, when a distance in the vertical direction from the center 16 of the light source up to the surface of the horizontal part of the light reflection plate is H (mm), a distance in the horizontal direction from the center of the light source up to the bottom part of oblique surface of the chevron type bent part is L (mm), a distance in the horizontal direction from the center of the light source up to the apex part of oblique surface of the chevron type bent part is P (mm), the height of the apex part of oblique surface of the chevron type bent part is T, and the angle of oblique surface at the bottom part of oblique surface of the chevron type bent part is θ(°), H, L, P, T, and θ satisfy a following relation; 1/2tan-(L/H)-10°≤θ≤1/2tan-[P/(H-T)]+10°. COPYRIGHT: (C)2006,JPO&NCIPI