| 摘要 |
<p>PURPOSE:To provide a lamp structure capable of attaining light distribution having little ineffective section. CONSTITUTION:A reflector 13 is formed in a curved surface opened more than a rotational paraboloid in this lamp structure, and the radiation angle of a beam L reflected by the reflector 13 is matched with the outer opening angle thetaof the vertical face section 7 of a lens 6. The width d2 of the ineffective section (m) of the beam L reflected by the reflector 13 is made only the thickness of the inner lens 6, and this is very advantageous in view of the light distribution property.</p> |
