We present a simple freeform lens design method for an application to LED collimating
illumination. The method is derived from a basic geometric-optics analysis and construction …

Pico‐projection displays are the main developing direction for future projection displays, but
the balance between the optical efficiency and the system size is still a big concern. This …

摘要为了有效地利用光源能量, 满足LED 远场照明系统要求, 提出了一种实现LED
大视场角准直照明的自由曲面透镜设计方法. 运用ZEMAX 软件序列模式下的多重组态建立透镜 …

Micro-LED display is considered to be the most promising display technology, and naked-
eye 3D display represents the most advanced frontier of display. Naked-eye 3D micro-LED …

The application of parity–time (PT) symmetry in optics, especially PT-symmetry breaking,
has attracted considerable attention as an approach to controlling light propagation. Here …

We present the method for computation of highly effective total internal reflection (TIR) optics
for LED-based illumination systems. The computation problem is reduced to the integration …

As a new technique of indoor localization, visible light positioning has the advantages of
high accuracy and antielectromagnetic interference. Received signal strength (RSS) based …

This study aims to develop a human-centric, intelligent lighting control system using
adaptive LED lights in roadway lighting, integrated with an imaging luminance meter that …

Collimated beam shaping with freeform surface usually employs a predefined mapping to
tailor one or multiple freeform surfaces. Limitation on those designs is that the source, the …

An aspheric surface lens is presented to realize collimating illumination with low Fresnel
loss based on Fresnel equations and Snell's law. The smooth 2D contour of refractive optical …