WINDSHIELD GLASS, HEAD-UP DISPLAY SYSTEM, AND HALF-MIRROR FILM

Provided are a head-up display system capable of displaying a screen image which is the generation of double images is suppressed and has high reflectance and high transmittance, and a windshield glass which is used in the head-up display system and in which a projection image display portion is inc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KATO Shunya, ANZAI Akihiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY 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 GLASS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES JOINING GLASS TO GLASS OR OTHER MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MINERAL OR SLAG WOOL NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING VEHICLES IN GENERAL WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES
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Beschreibung
Zusammenfassung:	Provided are a head-up display system capable of displaying a screen image which is the generation of double images is suppressed and has high reflectance and high transmittance, and a windshield glass which is used in the head-up display system and in which a projection image display portion is inconspicuous under external light in a case of being seen from outside. The head-up display system includes: the projection image display portion; a circularly polarized light reflection layer and a λ/2 retardation layer which are included in the projection image display portion in which the circularly polarized light reflection layer includes four or more cholesteric liquid crystal layers and one layer of the four or more cholesteric liquid crystal layers has a center wavelength of selective reflection at 350 nm or more and less than 490 nm, the windshield glass; and a projector.