ATHERMALIZED OPTICS FOR LASER WIND SENSING

摘要

Techniques are disclosed for providing an optical assembly to provide stereoscopic images of a reflected laser spot to a camera for wind measurement. According to certain embodiments of the invention, an optical assembly can include left and right (or first and second) subassemblies having lens groups and reflective elements that cause light traveling left and right subassemblies to follow similar paths to focus on respective left and right portions of a camera. The camera can then use left and right images of reflected laser light to determine wind based on turbulence patterns in the left and right images.

主权项

1. A stereoscopic optical assembly for laser wind sensing, the optical assembly comprising:
first and second subassemblies, wherein each of the first and the second subassemblies comprise elements including:
a first set of one or more lenses;a second set of one or more lenses;a first reflective element;a second reflective element; andwherein, for each of the first and second subassemblies, the elements are configured to cause at least a portion of the light entering the subassembly to:travel through the first set of one or more lenses,after traveling at least through the first set of one or more lenses, travel through the second set of one or more lenses,after traveling at least through the second set of one or more lenses, reflect off of the first reflective element, andafter reflecting at least off of the first reflective element, reflect off of the second reflective element toward an output of the subassembly; and a camera comprising a pixel array having first set of pixels and a second set of pixels; and wherein:
the output of the first subassembly is configured to direct light toward the first set of pixels of the camera; andthe output of the second subassembly is configured to direct light toward the second set of pixels of the camera.