| 摘要 |
<p>A non-planar Fresnel reflector array mold pattern and fabrication method are described which can be utilized to manufacture integral non-planar Fresnel reflector array which are non subject to molding inclusions. The Fresnel reflector segments comprising the mold pattern are joined to angles to one another and incorporate off-axis Fresnel segments at segment positions in which the optical axis of the segment is not sufficiently parallel to the intended pull direction of the associated mold. The focal point of each off-axis segment lies along a path that is angularly offset from the optical axis of said segment. The use of properly oriented off-axis Fresnel segments within the non-planar Fresnel array result in the elimination of molding inclusions. The mold pattern thus created may be positive or negative, and provides the three-dimensional pattern from which the final manufacturing molds or tools are created.</p> |
