Optical thin sheet, surface light source device and display device comprising a substrate layer, a roughness layer, and a prism layer comprising first photodiffusion particles, second photodiffusion particles, and a binder resin

An optical thin sheet (60) comprises: a substrate layer (65), a roughness layer (70), and a prism layer (80). the prism layer (80) comprises: first photodiffusion particles (71), second photodiffusion particles (72), and a binder resin (73). The refractive index n2 of the second photodiffusion parti...

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Bibliographische Detailangaben
1. Verfasser:	KITANO, KEIKO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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 PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	An optical thin sheet (60) comprises: a substrate layer (65), a roughness layer (70), and a prism layer (80). the prism layer (80) comprises: first photodiffusion particles (71), second photodiffusion particles (72), and a binder resin (73). The refractive index n2 of the second photodiffusion particles is different from refractive index nb of the binder resin and the refractive index n1 of the first photodiffusion particles. The average grain size d1 of the first photodiffusion particles, the average grain size d2 of second photodiffusion particles, and the thickness tb of roughness layer at the position not across the first photodiffusion particles and second photodiffusion particles satisfy the following relationship: d2