# Design of a freeform electronic viewfinder coupled to aberration fields of freeform optics.

@article{Bauer2015DesignOA, title={Design of a freeform electronic viewfinder coupled to aberration fields of freeform optics.}, author={Aaron Bauer and Jannick P. Rolland}, journal={Optics express}, year={2015}, volume={23 22}, pages={ 28141-53 } }

The newly formulated theory of aberration fields of freeform surfaces describes the aberrations that freeform Zernike polynomial surfaces can correct within folded powered optical systems. This theory has guided the design of an OLED-based reflective freeform electronic viewfinder covering a 25° full field-of-view with a 12 mm eyebox, which is reported together with a detailed methodology that begins with developing an unobscured starting point and ends with an optimized freeform design…

## 37 Citations

### Ray-based optical design tool for freeform optics: coma full-field display.

- PhysicsOptics express
- 2016

This research utilizes nodal aberration theory to develop a ray-based method to generate a coma full-field display that circumvents wavefront fitting errors that can affect Zernike polynomial-based full- field displays for highly aberrated freeform starting designs.

### All-reflective electronic viewfinder enabled by freeform optics.

- PhysicsOptics express
- 2019

This work documents the design, fabrication, and assembly of an all-reflective high-end electronic viewfinder that shows the applicability of freeform surfaces to eyepiece design forms.

### Starting geometry creation and design method for freeform optics

- PhysicsNature Communications
- 2018

The design of freeform optics is approached with aberration theory with general guidelines to design and optimize physically realizable systems and a comparison of the optimized geometries shows the performance of the optimal geometry is at least 16× better, which underscores the importance of the geometry when designingfreeform optics.

### Coma full-field display for freeform imaging systems

- PhysicsSPIE Optifab
- 2015

With the recent advances in optical fabrication technology, the manufacturing of freeform optical surfaces is no longer prohibitive. To spur the development of freeform systems, however, optical…

### Generalized Aldis theorem for calculating aberration contributions in freeform systems.

- PhysicsOptics express
- 2016

A matrix method based on the propagation of a differential ray pair is developed, which allows determining the aberration contribution of each individual surface for any ray, and proves to be a universal tool for aberration calculations within freeform system.

### Aberrations of plane-symmetrical mirror systems with freeform surfaces. Part I: generalized ray-tracing equations.

- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
- 2021

The aberrations of reflective optical systems with one plane of symmetry are investigated in the most general case, with freeform surfaces and possibly different locations of the tangential and…

### Analysis of nodal aberration properties in off-axis freeform system design.

- PhysicsApplied optics
- 2016

Based on the framework of nodal aberration theory (NAT) applied to the coaxial system, the third-order astigmatism and coma wave aberration expressions of an off-axis system with Zernike polynomial surfaces are derived and the relationship between the off- axis and surface shape acting on the nodal distributions is revealed.

### Estimating field-dependent nodal aberration theory coefficients from Zernike full-field displays by utilizing eighth-order astigmatism.

- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
- 2019

This work calculates the field dependence of low-order Zernike astigmatism up to the eighth order in nodal aberration theory (NAT), and shows how this estimated field dependence can be used to quantitatively analyze a freeform telescope design.

### Efficient representation of freeform gradient-index profiles for non-rotationally symmetric optical design.

- Materials ScienceOptics express
- 2020

The proposed three-dimensional orthogonal polynomial basis set (the FGRIN basis) opens a new design space of 3D rotational variant GRIN profiles, which has the potential of replacing multiple freeform surfaces and simplifying complex systems.

### Over-designed and under-performing: design and analysis of a freeform prism via careful use of orthogonal surface descriptions

- PhysicsPhotonics Europe
- 2018

In this paper, two freeform prism combiner designs with different geometries were studied. The first design, whose geometry is driven by the need for total-internal-refraction, achieves optical…

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