VEHICLE LIGHTING APPLIANCE CONSTITUTION LENS AND VEHICLE LIGHTING APPLIANCE

• Main Authors: SANO YASUKAZU, TAKAHASHI KATSUHIKO, WATANABE MASAAKI
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide a lens structure which can easily satisfy a large-bias light distribution, and an extreme luminosity condition, and a vehicle lighting appliance.SOLUTION: In this vehicle lighting appliance constitution lens 10 having a light incident face 11, and a light emitting face 12 arranged at a reverse side of the light incident face, the vehicle lighting appliance constitution lens has a first light emitting range 12P which forms a first light distribution, and a second light emitting range 12T which forms a second light distribution on the light emitting face. The first light distribution differs from the second light distribution in a bias form related to an azimuth around an optical axis, and the first light emitting range is constituted of a prism array which is oriented to a prescribed main axis direction along the light emitting face, and in which a plurality of prism regions 12having prism emitting face parts 12which are inclined to the optical axis are continuously aligned.SELECTED DRAWING: Figure 1 【課題】偏りの大きな配光分布や極端な光度条件を容易に充足することができるレンズ構造及び車両用灯具を提供する。【解決手段】本発明の車両用灯具構成レンズ１０は、光入射面１１と、該光入射面の逆側に配置される光出射面１２とを具備する車両用灯具構成レンズであって、前記光出射面上において、第１の配光分布を実現する第１の光出射範囲１２Ｐと、第２の配光分布を実現する第２の光出射範囲１２Ｔとを有し、前記第１の配光分布は、前記第２の配光分布に対して光軸周りの方位に関する偏り態様が異なり、前記第１の光出射範囲は、前記光出射面に沿った所定の主軸方向に向くとともに光軸に対して傾斜したプリズム出射面部１２ｐｅを備えた複数のプリズム領域１２ｐｒが連続して配列されたプリズムアレーにより構成される。【選択図】 図１