LENS SHEET, SURFACE LIGHT SOURCE UNIT AND DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a lens sheet which can make an image of a light emission part inconspicuous.SOLUTION: The lens sheet 30 has a body part 32 and a plurality of unit lenses 35 on the body part. A lens face angle θa1 between the outer contour 35a of the unit lens and a sheet face is mad...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ASANO HIDEJI, GOTO MASAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lens sheet which can make an image of a light emission part inconspicuous.SOLUTION: The lens sheet 30 has a body part 32 and a plurality of unit lenses 35 on the body part. A lens face angle θa1 between the outer contour 35a of the unit lens and a sheet face is made larger toward the end part 35b2 from the top part 35b1. The lens face angle α (°) in a reference point SP on the outer contour crossing a straight line SL in contact with the adjacent unit lens making angle 80° with the normal line, an angle β (°) between a reference line segment for connecting the reference point SP to the end part and the reference tangential line at the reference point and a lens face angle γ (°) at the end part form a prescribed relation.