| 摘要 |
PURPOSE:To increase a practical field angle of a light emitting indicator and to provide excellent relative intensity by composing one profile line of the profile line of perpendicularly cut end faces of a lens for forming a light emitting face in a protrusion state, and composing the other profile line in a recess or flat state. CONSTITUTION:A light emitting surface 14 is formed in a lens surface, and one L1 of profile lines of perpendicular cut end faces of the lens surface is partly formed in a smooth semispherical protrusion state having a recess (a). Though the line L1 partly has the recess (a), it main body is in a protrusion state, the other profile line L2 is mostly formed in a flat state, and its main body is flat. A light emitted from a light source 15 exhibits a sharp directivity by the convex lens operation of the surface 14 in a vertical direction, and the surface 14 does not perform a convex lens operation in a horizontal direction, thereby diffusing it. Thus, one of the directivities of the light in the vertical and horizontal directions is enhanced, the light is diffused in the other direction, and an indication with excellent relative intensity is performed at the practical wider field angle. |
