Affiliation:
1. Hangzhou Dianzi University
Abstract
We report a design method based on an annularly stitched aspherical
surface for highly collimated optical systems with extended light
sources. The annularly stitched aspherical surface is constructed as a
circular central zone and one or more annular zones, which are
rotationally symmetric and provide flexibility to satisfy the
requirements of a practical design. An extended LED light source can
be considered, and a backward ray-tracing process is used to construct
the initial lens model. The specific optimization has been added step
by step to modify the stitched surface to redistribute the light rays
emitted from the extended source. The smoothness of the stitched
surface is considered in the design and optimization process to
guarantee the processability of the system. A prototype has been
fabricated and tested, which demonstrates the validity of this
method.
Funder
The Institute of Electrical Engineering,
CAS
Chinese Academy of Science and Technology
Service Network Planning
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering