METHOD FOR MOLDING INNER REFLECTIVE BODY AND MOLD FOR MOLDING INNER REFLECTIVE BODY

• Main Authors: MAKIGUCHI TADASHI, ITO SHIGERU
• Format: Patent
• Language: English
• Published: 16.04.2002
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a method for molding an inner reflective body such as a light guiding plate with no weldline and excellent optical characteristics. SOLUTION: When the inner reflective body which takes a light from a light source into a molded body and then, reflects the light from the light source on the inside of the surface of the molded body and emits this reflected light from the other surface of the molded body and consists of a transparent resin molded body is molded, a mold in which the molding surface of at least one mold between a pair of the molds comprises an air-permeable porous metal and molding is performed by injection molding.