2016 年 82 巻 1 号 p. 87-92
As a method to reduce electric power, a light source called Field Emission Lamp (FEL) is developed. The power consumption of FEL is one tenth of incandescent lamp and this lamp can be manufactured at low cost. We developed a white FEL by blending RGB phosphor powder while taking advantage of the characteristic emitting color of FEL. We made a prototype of the white FEL light source with the same structure as stop lamps. The prototype demonstrated the luminance of 42,700cd/m2 at 1.56W energy consumption. Based on this, we developed a compact and high-intensity light source structure for headlamps that satisfies light distribution requirements. We newly designed a reflector and modified the lamp structure. The I-V characteristic curve and electronic field simulations showed the improved capacity of electronic emission and reduced load to the supply circuit.