<p>A PAR lamp (10) has a body (12) with an internal reflector surface (14) disposed about a longitudinal axis (16). A cavity (18) is provided at one end (20) of the body (12) and an arc discharge tube (22) that provides a substantially spherical light source is positioned in the cavity (18) and disposed on the longitudinal axis (16). A cover receiving opening (24) is provided at a second end (26) of the body and a cover (27) closes the cover receiving opening (24). A plurality of spiral facets (28) is formed on the internal reflector surface (14), the plurality of spiral facets (28) being sufficient in number to increase the maximum beam candle power and decrease the beam angle when compared to faceted lamps having a lesser number of facets. The number of facets is equal to or greater than 75 and preferably is 100.</p>
申请公布号
WO2008143805(A1)
申请公布日期
2008.11.27
申请号
WO2008US05990
申请日期
2008.05.09
申请人
OSRAM SYLVANIA INC.;HRUBOWCHAK, DAVID, M.;LI, JASON, J.;ROTHWELL, HAROLD, L., JR.
发明人
HRUBOWCHAK, DAVID, M.;LI, JASON, J.;ROTHWELL, HAROLD, L., JR.