To provide a lighting device capable of properly detecting a state of a projection region of illumination light using light other than illumination light, and to provide a suitable light emitting device used for the lighting device.SOLUTION: A lighting device includes: a light source 11a for emitting excitation light L1 of a predetermined wavelength; a light source 11b for emitting detection light L2 whose wavelength is different from that of the excitation light L1; a wavelength conversion member 13 to which the excitation light L1 and the detection light L2 are radiated, which coverts the wavelength of the excitation light L1 into other wavelength, and which diffuses the light whose wavelength has been converted and the light whose wavelength has not been converted (excitation light L1, detection light L2); a projection optical system 20 for projecting the light of each wavelength diffused by the wavelength conversion member 13; and a light receiving sensor 33 for receiving reflection light of the detection light L2 reflected by an object existing in the projection direction. Here, at least a part of an illumination region of the detection light L2 with respect to the wavelength conversion member 13 overlaps with an illumination region of the excitation light L1 with respect to the wavelength conversion member 13.SELECTED DRAWING: Figure 1
【課題】照明光以外の光を用いて照明光の投射領域の状態を適正に検出することが可能な照明装置およびそれに用いて好適な発光装置を提供する。【解決手段】照明装置は、所定波長の励起光L1を出射する光源11aと、励起光L1とは波長が異なる検出光L2を出射する光源11bと、励起光L1と検出光L2が照射され、励起光L1の波長を他の波長に変換するとともに波長変換された光および波長変換されなかった光(励起光L1、検出光L2)を拡散させる波長変換部材13と、波長変換部材13によって拡散された各波長の光を投射する投射光学系20と、投射方向に存在する物体によって反射された検出光L20の反射光を受光する受光センサ33と、を備える。ここで、波長変換部材13に対する検出光L2の照射領域の少なくとも一部が波長変換部材13に対する励起光L1の照射領域に重なっている。【選択図】図1
LIGHTING DEVICE AND LIGHT EMITTING DEVICE
照明装置および発光装置
2020-01-09
Patent
Electronic Resource
Japanese
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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H01S Vorrichtungen, die stimulierte Emission verwenden , DEVICES USING STIMULATED EMISSION |
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