Patent ID: 8439512
Filing Date: 2013-05-14
Classification: F21K,F21V,F21Y

Abstract:
1. A lamp including a semiconductor light-emitting element as a light source, a circuit unit configured to cause the semiconductor light-emitting element to emit light, and an envelope having an outer tube and a base, the semiconductor light-emitting element and the circuit unit being housed in the envelope, the lamp comprising: a wavelength converter disposed in an axially central section of the outer tube and configured to convert wavelengths of light incident thereto, the semiconductor light-emitting element being disposed in a region at a side of the wavelength converter facing the base and oriented so that a main, emission direction points away from the base; an optical component disposed between the wavelength converter and the semiconductor light-emitting element and configured to guide emission light of the semiconductor light-emitting element to the wavelength converter; and a reflecting mirror configured to reflect light, wherein at least one component of the circuit unit is disposed in a region at a side of the wavelength converter opposite the semiconductor light-emitting element, and the reflecting mirror is disposed between the at least one component of the circuit unit and the wavelength guide and reflects light received from the wavelength converter back toward the wavelength converter.