The control of light propagation in highly tilted geometry by freeform illumination optics has numerous applications. However, difficulties associated with the tailoring surfaces significantly limit scope Here, for first time, to best our knowledge, we develop a general formulation designing geometry. numerical and experimental results show that when precise is achieved, lenses are efficient can reduce glare trespass.

Freeform optics constitutes a new technology that is currently driving substantial changes in beam shaping. Most of the current shaping systems are elaborately tailored for fixed optical properties, which means output light distribution system usually cannot be changed. What we present here class systems, properties can changed to meet requirements different applications. The proposed composed freeform lens and non-classical zoom designed by ray aiming conservation energy instead aberration...

Designing freeform optics for illuminating hard-to-reach areas is a challenging and rewarding issue. The current designs of illumination are mostly valid in the applications which region interest easily accessible. What we present here general formulation designing lenses areas. In this method, lens consists two elaborately designed surfaces, by both intensity distribution wave-front light beam manipulated desired manner. after refraction further guided through light-guiding system to...

The direct-lit LED backlight is a key component in large-area LCD displays. existing methods which rely on point source assumption and irradiance feedback are less effective compact designs near field, designing thin high-quality back-lit backlights still remains challenging issue. In this paper, we develop direct method for systems. étendue of light sources considered the numerical calculation lens profiles without cumbersome Monte Carlo ray tracing, allows us to obtain lighting modules...

Freeform and precise irradiance tailoring in arbitrarily oriented planes is an ultimate goal of nonimaging optics has not been well addressed. In this paper, we develop a general formulation for arbitrary three-dimensional (3D) space using freeform lenses. This method breaks any symmetric constraints imposed on the geometrical arrangement conventional beam shaping systems, yielding high-performance systems with new functions flexible arrangements 3D space. paves way broad application optics....

A key challenge in tailoring compact and high-performance illumination lenses for extended non-Lambertian sources is to take both the étendue radiance distribution of an source into account when redirecting light rays from source. We develop a direct method tailor with prescribed irradiance properties sources. relationship between on given observation plane established. Both edge internal emanating are considered numerical calculation lens profiles. Three examples illustrate effectiveness...

Fourier ptychographic microscopy (FPM) is a recently developed computational imaging technology, which achieves high-resolution with wide filed-of-view by overcoming the limitation of optical spatial-bandwidth-product (SBP). In traditional FPM system, aberration system ignored, may significantly degrade reconstruction results. this paper, we propose novel method based on forward neural network models correction, termed FNN-AC. Zernike polynomials are used to indicate wavefront in our...

Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text R. Wu, Z. Ding, L. Yang, and Zheng, "Precise light control in highly tilted geometry by freeform illumination optics," Optical Design Fabrication 2019 (Freeform, OFT), OSA Technical Digest (Optica Publishing Group, 2019), paper FT2B.2. Export BibTex Endnote (RIS) HTML Plain alert Save article

The optical combiner is an important part of the see-through augmented reality display system. Waveguide appropriate solution due to its advantages such as light weight and compact structure. Because grating has replicability, it a promising waveguide's coupler for mass-production. In this paper, waveguide designed by using rigorous coupled wave analysis (RCWA) increase accuracy simulation critical dimension similar wavelength. uniformity diffraction efficiency considered parameter better...

Two freeform surfaces provide more degrees of freedom in designing illumination optics and can yield a better solution. The existing methods for point-like sources are mostly valid one surface. Designing two still remains challenging issue. In this letter we develop general formulation lens sources. proposed method is very robust lenses with elaborately designed surfaces. examples clearly show that using yields solutions to problems ultra-high energy efficiency.

We develop a method for designing aspherical lenses in two-dimensional geometry, which can be used to redirect the light rays from extended Lambertian sources produce prescribed illuminance distribution with short lighting distance.

Freeform surfaces are optical without linear or rotational symmetry. Their high degrees of design freedom liberate designers and engineers from restrictions on surface geometry, yielding compact lightweight imaging systems with excellent performance. optics have become a competitive tool in the seethrough head-mounted display (OST-HMD) systems. In this paper, we present two different OST-HMD which configurations both employ freeform to correct balance aberrations. optimization systems, start...

Direct design of illumination optics for extended light sources is challenging but rewarding. Most the current direct methods, which are developed specifically treatment prescribed intensity designs, usually cannot yield acceptable in near field where influence lens size on irradiance distribution be ignored. Here, first time, to best our knowledge, we develop a method designing aspherical lenses with properties 3D geometry. The proposed valid both and far field. numerically experimentally...

In compressive spectral imaging, three-dimensional spatio-spectral data cubes are recovered from two-dimensional projections. The quality of the compressive-sensing-based reconstruction is dependent on coherence sensing matrix, which determined by system projection and sparse prior. Studies optimization projection, mainly deals with coded aperture, successfully decreases matrix improves quality. However, prior considering relationship between remains a challenge. this paper, we propose...

It is a meaningful but challenging issue that designing illumination optics for extended sources directly. A number of direct design methods developed specifically to deal with prescribed intensity designs usually fail produce satisfactory in the near field where influence lens size on irradiance distribution cannot be ignored. In this paper, method aspherical lenses introduced achieve specified characteristics. And various types distributions are shown paper verify broad applicability and...

High-performance image-forming systems often require high system complexity due to the overdetermined nature of optical aberration correction. What we present here is a novel computational imaging modality which can achieve high-performance using simple non-image-forming system. The presented contains an aspherical non-imaging lens designed with optimal transfer light radiation between object and detector. All spatial frequencies collected by are delivered No image formed on detector,...