PROBLEM TO BE SOLVED: To provide a luminous intensity control lens capable of stably performing a desired luminous intensity control by preventing light reflection defect or surface deterioration due to adherence of a liquid and capable of improving durability.SOLUTION: There is provided a luminous intensity control lens 3 in which an inverted conical recess 3A reflecting the light emitted from an LED (light source) 4 to the whole circumference in a right angle direction to an optical axis is formed. A notch groove 3a penetrating in a vertical direction is formed on a part of the recess 3A, and also the notch groove 3a is formed in an angular range needing no luminous intensity control. Besides, a substance having hydrophilicity is applied on an inner face (a first reflection plane) 3b other than the notch groove 3a of the recess 3A.SELECTED DRAWING: Figure 5
【課題】液体の付着による光の反射不良や表面劣化を防いで所望の配光制御を安定的に行うことができるとともに、耐久性の向上を図ることができる配光制御用レンズを提供すること。【解決手段】LED(光源)4から出射する光を光軸に対して直角方向全周へと反射させる逆円錐状の凹部3Aが形成された配光制御用レンズ3において、前記凹部3Aの一部に、上下方向に貫通する切欠溝3aを形成する。又、前記切欠溝3aを、配光制御を必要としない角度範囲に形成する。更に、前記凹部3Aの切欠溝3a以外の内面(第1反射面)3bに親水性を有する物質を塗布する。【選択図】図5
LUMINOUS INTENSITY CONTROL LENS AND LUMINAIRE USING THE SAME
配光制御用レンズ及びこれを用いた照明装置
2016-05-23
Patent
Electronic Resource
Japanese
IPC: | F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / 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 |
Automobile signal lamp luminous intensity automatic control system and control method
European Patent Office | 2021
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