LIGHT TRANSMISSION BODY

PROBLEM TO BE SOLVED: To drastically increase the luminance of a surface light source. SOLUTION: In a light transmission body 11 for introducing light made incident from an end surface to a liquid crystal part 12, a minute recessed part 13, being recessed from a front surface 11B to the direction of...

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Bibliographische Detailangaben
1. Verfasser:	TAKADA HIROMITSU
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 LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS 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 TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To drastically increase the luminance of a surface light source. SOLUTION: In a light transmission body 11 for introducing light made incident from an end surface to a liquid crystal part 12, a minute recessed part 13, being recessed from a front surface 11B to the direction of a thickness part, is formed on the opposed surface to the front surface of the light transmission body confronting the liquid crystal part 12, by composing a reflection plane 13A formed with the minute recessed part 13 so that an angle θ, formed between the normal N to the reflection plane 13A and the direction of projecting light 14 from the reflection plane 13A being normal to the liquid crystal part 12, becomes larger than a critical angle θ0 and smaller than 90 deg., light incident on the reflection plane 13A is transmitted to the liquid crystal part 12 without an energy loss, the light intensity in the direction of the liquid crystal part 12 is improved and surface luminance is increased. By changing the depth of the reflection plane 13A and performing surface roughening treatment, even when the area of the minute reflection plane viewing from the liquid crystal part 12 is the same, the surface luminance is increased by increasing the actual area of the reflection plane 13A.