Back to results
US 8,569,942 B2Granted
Vehicle headlamp and illuminating device
AssigneeSharp Kabushiki Kaisha
InventorsKatsuhiko Kishimoto, Hidenori Kawanishi
Life of this patent
Estimating the term…
Abstract
A headlamp 1 includes a laser diode 3 that emits a laser beam, a light emitting part 7 that emits light upon receiving the laser beam emitted from the laser diode 3, and a reflection mirror 8 that reflects the light emitted from the light emitting part 7. According to the headlamp 1, the light emitting part 7 has a luminance greater than 25 cd/mm2, and an area size of an aperture plane 8a perpendicular to a direction in which an incoherent light travels outward from the headlamp 1 is less than 2000 mm2.
Claims7
A vehicle headlamp, comprising:
- an excitation light source that emits excitation light;
- a light emitting part that emits light upon receiving the excitation light emitted from the excitation light source;
- and
- an optical system that distributes the light emitted from the light emitting part,
- the light emitting part having a luminance greater than 75 cd/mm2, and
- an area size of the optical system, when viewed from a direction in which the light travels outward from the vehicle headlamp, being less than 1500 mm2, and at least 100 times as large as an area size of a surface of the light-emitting part, which surface receives the excitation light.
3 more elements
An illuminating device, comprising:
- an excitation light source that emits excitation light;
- a light emitting part that emits light upon receiving the excitation light emitted from the excitation light source;
- and
- an optical system that distributes the light emitted from the light emitting part,
- the light emitting part having a luminance greater than 75 cd/mm2, and
- an area size of the optical system, when viewed from a direction in which the light travels outward from the illumination device being less than 1500 mm2, and at least 100 times as large as an area size of a surface of the light-emitting part, which surface receives the excitation light.
3 more elements
Dependencies are inferred from the claim text.