To provide a light source device capable of detecting a small defect such as a microcrack being generated in a phosphor plate in such a case, so that a safety measure can be taken.SOLUTION: A light source device includes: a laser light source 1; a phosphor plate 3 which can receive an irradiating laser beam in a laser beam irradiation region 14, and emit wavelength-converted light in response to the irradiation with the laser beam; an optical scanning mechanism 2 which can scan the laser beam in the laser beam irradiation region 14; a transparent conductive film first pattern 13 which is arranged on the phosphor plate 3 in the laser beam irradiation region 14; a transparent conductive film second pattern 13 which is arranged on the phosphor plate 3 outside the laser beam irradiation region 14, and connected to the transparent conductive film first pattern 13 to constitute a series-connection line in continuous form; and an electric circuit which is electrically connected to the transparent conductive second pattern 13, and has a function of detecting variation in resistance value of the series-connection line and also stopping driving the laser light source 1 if the resistance value deviates from a predetermined range.SELECTED DRAWING: Figure 1

    【課題】蛍光体プレートに微細クラック等の小さな欠損が生じた時も、その欠損を検出して安全対策を取れる光源装置を提供する。【解決手段】レーザ光源1と、レーザビーム照射領域14内でレーザビームの照射を受け、レーザビームの照射に応じて波長を変換した光を出射できる蛍光体プレート3と、レーザビーム照射領域14において、レーザビームを走査できる光走査機構2と、レーザビーム照射領域14において蛍光体プレート3の上に配置された透明導電膜第1パターン13と、レーザビーム照射領域14外において蛍光体プレート3の上に配置され、透明導電膜第1パターン13と接続されて一つなぎの直列接続配線を構成する透明導電膜第2パターン13と、透明導電膜第2パターン13と電気的に接続され、直列接続配線の抵抗値の変化を検出し、抵抗値が所定範囲外となった時はレーザ光源1の駆動を停止する機能を持つ電気回路と、を含む。【選択図】図1


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    Titel :

    LIGHT SOURCE DEVICE AND VEHICULAR HEADLIGHT


    Weitere Titelangaben:

    光源装置、車両用ヘッドライト


    Beteiligte:

    Erscheinungsdatum :

    2019-12-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / H01S Vorrichtungen, die stimulierte Emission verwenden , DEVICES USING STIMULATED EMISSION



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