Patent ID: 8240873

Claim:
A method of retrofitting an illumination device comprising (i) a battery housing for containing at least one battery, (ii) an incandescent light source configured to be powered by the at least one battery, and (iii) a reflector housing containing a reflector for reflecting light emitted by the incandescent light source toward an emission axis of the illumination device, the battery housing and the reflector housing collectively defining a volume envelope of the illumination device, the method comprising: replacing the incandescent light source with a sub-assembly comprising (i) at least one solid-state light emitter and (ii) a driving circuit for converting power from the at least one battery into suitable current to the at least one solid-state light emitter; and replacing, within the reflector housing, the reflector with a replacement reflector for directing light emitted by the at least one solid-state light emitter along the emission axis, the replacement reflector having a size different from that of the reflector, wherein the replacements of the incandescent light source and the reflector alter the internal configuration, but not the volume envelope, of the illumination device.