发明名称 |
LAMP AND VEHICLE HEADLAMP |
摘要 |
A lamp includes: first and second semiconductor light-emitting elements adapted to emit excitation light; a wavelength conversion element adapted to convert the excitation light into light having a peak wavelength different from that of the excitation light; and a concave mirror adapted to reflect the excitation light emitted from the semiconductor light-emitting elements to the wavelength conversion element and reflect the light from the wavelength conversion element toward an outside of the lamp. A distance y1 from an optical axis of the first semiconductor light-emitting element to an optical axis of the concave mirror satisfies (D+Dphos)/2≦y1≦4f, and a distance y2 from an optical axis of the second semiconductor light-emitting element to the optical axis of the concave mirror satisfies 4f<y2≦R. |
申请公布号 |
US2015354761(A1) |
申请公布日期 |
2015.12.10 |
申请号 |
US201514726634 |
申请日期 |
2015.06.01 |
申请人 |
Panasonic Intellectual Property Management Co., Ltd. |
发明人 |
NAGAO NOBUAKI;SHIRAISHI SEIGO;NAGASAKI YOSHIHISA;OHBAYASHI TAKASHI |
分类号 |
F21K99/00;F21V13/08;F21S8/10;F21V7/04 |
主分类号 |
F21K99/00 |
代理机构 |
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代理人 |
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主权项 |
1. A lamp comprising:
a plurality of semiconductor light-emitting elements adapted to emit excitation light; a wavelength conversion element adapted to convert the excitation light into light having a peak wavelength different from that of the excitation light; and a concave mirror adapted to reflect the excitation light emitted from the plurality of semiconductor light-emitting elements to the wavelength conversion element and reflect the light from the wavelength conversion element toward an outside of the lamp, wherein the plurality of semiconductor light-emitting elements include a first semiconductor light-emitting element and a second semiconductor light-emitting element, a distance y1 from an optical axis of the first semiconductor light-emitting element to an optical axis of the concave mirror satisfies (D+Dphos)/2≦y1≦4f, and a distance y2 from an optical axis of the second semiconductor light-emitting element to the optical axis of the concave mirror satisfies 4f<y2≦R, in which D is a beam diameter of the excitation light, Dphos is a length of the wavelength conversion element in a direction perpendicular to the optical axis of the concave mirror, within a plane including the optical axis of the concave mirror and at least one selected from the optical axes of the first and second semiconductor light-emitting elements, f is a focal distance of the concave mirror, and R is a radius of an opening of the concave mirror. |
地址 |
Osaka JP |