Beam splitter.

摘要

Two or more reflective facets (34, 36) are so disposed relative to each other as to intercept different spatial portions of the cross-section of an incident light beam (40) and to direct each portion toward a different target area. As shown in Figure 1 the facets lie in parallel, spaced-apart planes defined by a step-like surface of a solid body, and in use are oriented in such a manner relative to an incident beam that all of the energy of the incident beam is reflected by the surface. In another alternative the facets are contiguous reflective surfaces of a solid body and are inclined relative to each other to direct the respective portions of an incident beam in different directions.