General formula to design a freeform singlet free of spherical aberration and astigmatism : Comment

Membrane based Deformable Mirror: Intrinsic aberrations and alignment issues

A Deformable Mirror (DM) is an important component of an Adaptive Optics system. It is known that an on-axis spherical/parabolic optical component, placed at an angle to the incident beam introduces defocus as well as astigmatism in the image plane. Although the former can be compensated by changing the focal plane position, the latter cannot be removed by mere optical re-alignment. Since the DM is to be used to compensate a turbulence-induced curvature term in addition to other aberrations, it is necessary to determine the aberrations induced by such (curved DM surface) an optical element whe…

Freeform geometrical optics I: Principles

Lens design uses a calculation of the lens' surfaces that permit to obtain an image from a given object. A set of general rules and laws permits to calculate the essential points of the optical system such as distances, thickness, pupils, and focal distance among others. Now, the theory on which the classical lens design is based changes radically as our theoretical foundations do not rely on the classical ray tracing rules. We show that with the rules expressed in a reduced vector analytical solution set of equations, we can take into account all optical elements, i.e. refractive, reflective,…

基于逆方法的三维平行到点成像系统设计

Design of a three-dimensional parallel-to-point imaging system based on inverse methods

本文提出一种基于逆方法和能量守恒定律的三维自由曲面平行到点成像系统设计方法，利用施瓦西望远镜确定参数，并通过光线追迹验证其性能优于经典设计。

使用无遮挡、自由曲面反射物镜的非线性光学显微镜

Nonlinear optical microscopy with an obscuration-free, freeform reflective objective

本研究开发了一种基于非共轴几何自由曲面反射镜的无遮挡显微镜物镜，具有0.65数值孔径和接近衍射极限的成像性能，克服了传统反射物镜的中心遮挡问题，为非线性光学成像提供了无色差、无色散的优越替代方案。

总波像差在广义光学系统中的分解

Decomposition of the total wave aberration in generalized optical systems

本文提出了一种基于光线轨迹数据的总波像差分解方法，首次实现了加性表面 Zernike 贡献的获取。

揭示在联合光学-图像设计中对校正分离像差的偏好

Revealing the preference for correcting separated aberrations in joint optic-image design

本文提出一种基于分离像差表征的光学-图像联合设计方法，通过无梯度图像仿真系统与像差校正网络，揭示了不同像差的校正偏好顺序，使手机镜头总长缩减10%并提升计算摄影质量。

异构自由曲面超表面：一种用于先进宽带色散工程的平台

Heterogeneous Freeform Metasurfaces: A Platform for Advanced Broadband Dispersion Engineering

本文提出异构自由曲面双层超表面平台，通过两阶段多目标优化和双层堆叠技术实现相位、群延迟及高阶色散的独立调控，在420纳米可见至近红外宽带内平均效率超过81%，显著提升色差校正与宽带性能。

EigenCWD：一种用于单片超透镜成像的空间变化反卷积算法

EigenCWD: a spatially-varying deconvolution algorithm for single metalens imaging

本文提出EigenCWD算法，利用特征值按列分解高效建模空间变化点扩散函数，解决单片超透镜成像中传统方法无法校正的大视场空间变化像差问题，性能优于维纳滤波。