To provide a reflection mirror unit for securing display definition of virtual images in vehicles.SOLUTION: A reflection mirror unit comprises: a base body 340 that is resin-molded into a curve plate with a concave surface 345 having a width in an elongate direction Dl and broadening in a short direction Ds; a pair of double-sided tapes 341 that is separately adhered to either-side portion in the elongate direction Dl of the concave surface 345; and a reflection body that is formed into the curve plate along the concave surface 345, and is adhered to an entire double-sided tape 341. Let a ratio having a display light image predicted to be distorted by deformation of the reflection body be defined as a prediction distortion rate Rp, a dimension in each of the double-sided tape 341 in the elongate direction Dl be defined as a tape width Wt, and a distance from a center position Pb of the elongate direction D1 in the base body 340 to a center position Pt of the elongate direction D1 in each of the double-sided tape 341 therein be defined as a tape arrangement distance Δt, Rp=0.0933*Wt+2.1167≤5[%], and Rp=0.1167*Δt-0.5697≤5[%] are established.SELECTED DRAWING: Figure 4

    【課題】車両において虚像表示品位を確保するための反射鏡ユニットの提供。【解決手段】反射鏡ユニットは、長手方向Dlに幅をもって短手方向Dsに広がる凹面345を有した湾曲板状に樹脂成形されているベース体340と、凹面345の長手方向Dlの両側箇所に分離して接着されている1対の両面テープ341と、凹面345に沿う湾曲板状に形成されて両面テープ341の全てに接着されている反射体を備える。表示光像が反射体の変形により歪むと予測される割合を予測歪み率Rpと定義し、両面テープ341の各々における長手方向Dlの寸法をテープ幅Wtと定義し、ベース体340における長手方向Dlの中心位置Pbから、両面テープ341の各々における長手方向Dlの中心位置Ptまでの距離をテープ配置距離Δtと定義すると、Rp=0.0933・Wt+2.1167≦5[%]と、Rp=0.1167・Δt−0.5697≦5[%]とが成立する。【選択図】図4


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    Title :

    REFLECTION MIRROR UNIT, AND HEAD-UP DISPLAY DEVICE


    Additional title:

    反射鏡ユニット及びヘッドアップディスプレイ装置


    Contributors:

    Publication date :

    2019-01-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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