A light guide device capable of axial and lateral light output includes a light cylinder, which extends along a central axis and is integrally formed.The light cylinder comprises an opposite first end and a second end, an in light surface at the second end, a reflecting surface at the second end, an axial out light surface and a side out light surface.The reflection includes at least one first reflection part and at least one second reflection part with different slope or curvature.With the axial light output surface, the reflecting surface and the lateral light output surface, the new model can adjust the light output direction, spot size, shape and other characteristics to achieve a long spot output and even energy.Moreover, the axial and lateral light output can be formed by using the integrated light cylinder, which makes the new type small in volume and good in application.一種可軸向與側向出光之導光裝置，包含一光柱體，沿一條中心軸延伸並且為一體成型。該光柱體包括相反的一第一端與一第二端、一位於該第一端的入光面，以及位於該第二端的一反射面、一軸向出光面與一側向出光面。該反射面包括斜率或曲率不同的至少一第一反射部與至少一第二反射部。藉由該軸向出光面供光線軸向射出，該反射面搭配該側向出光面供光線側向射出，使本新型可對光線射出方向、光斑大小、形狀等特性進行調整，達到較長光斑輸出，且能量均勻的效果。而且利用一體成型的該光柱體就可形成軸向與側向出光，使本新型體積小、應用性佳。
