| 摘要 |
FIELD: physics. ^ SUBSTANCE: reflector (1) has an ellipsoidal light-reflecting wall (21) and a light output (3) lying in the plane (32) of the light output. The light-reflecting wall is defined as part of the inner surface of the ellipsoid. The focal axis (25) of the ellipsoid lies at a defined angle to the axis (V) which is perpendicular to the plane (32) of the light output. The light-reflecting wall (21) is part of the ellipsoid which is taken between the point (24) on the ellipsoid furthest from the plane of the light output and the plane (32) of the light output. ^ EFFECT: reduced heating, longer service life and high efficiency of illumination. ^ 7 cl, 9 dwg |
