Semiconductor light source device

摘要

A semiconductor light source device is provided. The semiconductor light source device includes a light guide, at least one semiconductor light source set and at least one light transformation coupler. The light transformation coupler is disposed between the semiconductor light source set and the light guide for guiding the light emitted from the semiconductor light source set to the light guide. The light transformation coupler has an inclined surface and a curved surface. The inclined surface is a multi-level inclined surface with several slopes.

主权项

1. A semiconductor light source device, comprising:
a light guide; at least one semiconductor light source set; and at least one light transformation coupler disposed between the semiconductor light source set and the light guide for guiding a light emitted from the semiconductor light source set to the light guide; wherein the light transformation coupler has an inclined surface and a curved surface, and the inclined surface is a multi-level inclined surface with several slopes, wherein the slopes of at least two levels of the multi-level inclined surface are expressed by formulas:
D1*tan θc,1+D2*tan θc,2≦Lf−Ls, θc,2≦θc,1 wherein D1 denotes thr projection length of the first level inclined surface on the center axis; D2 denotes the projection length of the second level inclined surface on the center axis; θc,1 denotes the angle between the first level inclined surface and the center axis; θc,2 denotes the angle betwreen the second level inclined surface and the center axis. Lf denotes the radius of the light guide; and Ls denotes half of an edge of the semiconductor ligit source set.