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Robust Dual optical Sensor for pH and Dissolved Oxygen

ACS SENSORS 2022年第5期7卷 1506-1513页

作者： Wang, Lu Jensen, Kim Hatzakis, Nikos Zhang, Min Sorensen, Thomas Just Univ Copenhagen Nano Sci Ctr DK-2100 Copenhagen Denmark Univ Copenhagen Dept Chem DK-2100 Copenhagen Denmark Univ Copenhagen Nano Sci Ctr DK-1871 Frederiksberg Denmark Univ Copenhagen Dept Chem DK-1871 Frederiksberg Denmark

As part of moving our optical pH and dissolvedoxygen (DO) optical chemosensors toward industrial applications,we decided to explore a many-sensors-in-one principle. It wastested if physical segregation of the optical sensor components in asingle sensor polymer could remove cross-talk and quenching. Itwas found that a design concept with an oxygen-responsive dye inpolymer nanoparticles and a pH-responsive dye in an organicallymodified siloxane polymer resulted in a robust pH/O2dual opticalsensor. Individually, the O2-sensitive nanoparticles, a knowncomponent for optical DO sensing, and the pH sensor areoperational. Thus, it was decided to test if nanoparticles enclosedwithin the pH-sensitive responsive sol-gel (i) could work togetherif segregated and (ii) could operate with a single intensity signalthat is without a reference signal;developments within industrial optical sensor technology indicate that this should be feasible. Theprototype optode produced in this work was shown to have a negligible drift over 60 h, bulk diffusion-limited DO response, andindependent response to pH and O2. On the individual optode, pH calibration was found to show the expected sigmoidal shape andpKa, while the complexity of the calibration function for the DO signal was significant. While the engineering of the sensor device,optics, and hardware are not robust enough to attempt generic sensor calibration, it was decided to demonstrate the design conceptin simple fermentation experiments. We conclude that the dual sensor design with the physical segregation of components is viable.

关键词： optical sensors optodes dual sensors multiple analyte sensors fermentation composite materials microsegregation

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Generative design and Digital Manufacturing: Using AI and robots to build lightweight instruments 23

Generative Design and Digital Manufacturing: Using AI and ro...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： McClelland, Ryan NASA Goddard Space Flight Ctr Greenbelt MD 20770 USA

ISBN: (纸本)9781510654198;9781510654181

Digital engineering technologies are transforming long-stagnant development processes by applying the tremendous advancements in Information Technology (IT) to classical engineering tasks such as design, analysis, and fabrication of space-flight instrument structures. Generative design leverages developments in Artificial Intelligence (AI) and Cloud computing to enable a paradigm shift in the design process, allowing the engineer to focus on defining the requirements and objectives of the design while AI generates optimized designs which comply with the input requirements. Digital Manufacturing allows these complex lightweight designs to be efficiently manufactured by directly fabricating from the resulting 3D models. The development of these two Digital engineering technologies realizes significant mass savings while simultaneously reducing structure development time from months to days. This paper describes the development of the Evolved Structures process applying these technologies to spaceflight optical instrument structures including an example demonstrating greater than 10x reduction in development time/cost and greater than 3x improvement in structural performance.

关键词： Generative design Digital Manufacturing Topology Optimization Evolved Structures AI

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A File Sharing Site for Lens designs 23

A File Sharing Site for Lens Designs

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Reiley, Daniel J. Claff, William Burbank (United States) Sherborn (United States)

ISBN: (纸本)9781510654198;9781510654181

A file sharing site for lens designs has been started at *** . This site currently contains almost 2,000 optical models. Many engineering disciplines have built public libraries of useful, publicly-available content. For example, GITHUB(1) has publicly-available software;GrabCAD(2), 3DcontentCentral(3), TurboSquid(4) all offer mechanical engineering content such as solids files;TI, Analog, etc. offer reference designs for electronics engineers. Generally, these services aren't just file repositories;they also offer collaboration, yielding more models, more refinement, more discussion, more community, and more to learn. Lens designers can also benefit from such design libraries. This paper explains the utility and structure of the site.

关键词： Lens design

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Changing field of view by applying voltage difference 23

Changing field of view by applying voltage difference

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Sakarya, Dogan Ugur Roketsan Tact Missile Syst Grp TR-06780 Ankara Turkey

ISBN: (纸本)9781510654198;9781510654181

Dual field of view optical systems provide search, detect and observation abilities with wide and narrow field of views. These systems provide dual field of view by changing the effective focal length with moving a lens or lens group mechanically to exact positions. In this paper, previously proposed methodology is used to change effective focal length without any mechanical movement. This methodology relies on ionization of fluid with voltage difference to change the refractive index which is patented in 2022.

关键词： Observation system field of view zoom lens design voltage difference solution ionization

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Accurate camera performance prediction using optical and imaging simulation pipeline for super wide-angle lens 23

Accurate camera performance prediction using optical and ima...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Buquet, J. Larouche, R. Parent, J. Roulet, P. Thibault, S. Immervision 2020 Blvd Robert Bourassa Montreal PQ H3A 2A5 Canada

ISBN: (纸本)9781510654198;9781510654181

optical design process consists in minimizing aberrations using optimization methods. It relies on key performance indicators (KPIs), such as point spread function (PSF), Modulated transfer function (MTF), or relative illumination (RI) and spot sizes, that depend on lens elements aberrations. Their target values need to be defined -either for human or machine perception- at early stage of the design, which can be complex to do for challenging designs such as extended field of view. We developed an optical and imaging simulation pipeline able to render the effects of complex optical designs and image sensor on an initial aberration-free image. Extracting files from ray tracing software for simulating the PSF and sensor target information, the algorithm accurately renders off-axis aberrations with Zernike polynomials representation combined with noise contribution and relative illumination. The obtained image faithfully represents an optical system performance from the optics to the sensor component and we can then study the impact of additional aberration introduction.

关键词： End-to-End design spatially varying PSF wide angle image simulation

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Realizing low-distortion in miniature wide-angle lens with freeform optics technique 23

Realizing low-distortion in miniature wide-angle lens with f...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Zhuang, Zhenfeng Parent, Jocelyn Roulet, Patrice Thibault, Simon Immervision Inc 2020 Robert Bourassa BlvdSuite 2320 Montreal PQ H2A 2A5 Canada Univ Laval Dept Phys Genie Phys & Opt 2375 Rue Terrasse Laval PQ G1V 0A6 Canada

ISBN: (纸本)9781510654198;9781510654181

Distortion is one major shortcoming of conventional wide-angle lens. The correction of distortion can maximize field of view in a wide-angle lens and benefit natural scenes. In this paper, we propose a compact wide-angle lens utilizing freeform surfaces to address the shortcoming. The design approaches, including the starting point selection, freeform surface conversion scheme, and system optimization, are discussed in detail. Moreover, freeform diagnostic tools are developed aiming to facilitate system optimization and visualize the critical aspects of optical performance. The simulation results are demonstrated and discussed. Analysis results demonstrate that the design strategies proposed in this paper have been shown to be effective in reducing distortion as well as improving optical performance. We envision that the proposed design schemes will have a positive effect on research and application values for wide angle lens system.

关键词： Lens system design optical systems geometric optical design aspherics

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Method for designing optical systems from the off-the-shelf optical components 23

Method for designing optical systems from the off-the-shelf ...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Ryzhikov, Lev 136 Newtown Ave Unit 7 Norwalk CT 06851 USA

ISBN: (纸本)9781510654198;9781510654181

Several off-the-shelf optical lenses and lens components are available for use in the design of new optical systems. But there isn't a clear methodology on how effective there can be in a real optical device. It should be noted that the use of standard optical elements reduces the cost of the optical device, which is especially important for mass production. Ease and speed of replacement are also important parameters for the usability of standard optical elements. That is why the extensive use of purchased optical elements in optical devices will simplify their operation and improve the convenience of maintenance. Selecting purchased optical components of an optical circuit is not an easy task and requires certain skills. The main problem is that the optical design stage is divided into two parts. The first part is the creation of an optical circuit from non-standard (custom) optical components with optical characteristics close to cataloging lenses. The second part is to adjust the position of the optical component to satisfy specification requirements. This process sometimes required several iterations. For the process of fitting distances in an optical system to be successful, it is necessary to take into account the properties of optical glasses such as refractive index and dispersion when choosing lens components, in addition to their focal lengths and geometrical dimensions. It should be noted that in the catalogs of optical components there are optical parameters of lenses, and also glass parameters of the lens. This is essential information for lens designers to substitution the custom optical element for the off-the-shelf lens. Problems that arise with such a replacement are based on a limited number of standard lenses and lens components. To get comfortable for replacement, the custom lenses components must be modified (adjusted) so that optical parameters will be close enough to the parameters of the catalog lenses other words during the custom lenses opt

关键词： optical components Lenses Glasses optical design Relays Head Aberration correction Lens design Refractive index Tolerancing

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design of an expander lens for an MWIR zoom camera using the third-order aberration analysis 23

Design of an expander lens for an MWIR zoom camera using the...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Yun, Min-Seok Ryu, Tae-Sik Park, Sung-Chan Dankook Univ Dept Phys 119 Dandae Ro Cheonan Si 31116 Chungcheongnam South Korea

ISBN: (纸本)9781510654198;9781510654181

This study presents the methods for designing an expander lens for an MWIR zoom lens through the third-order aberration analysis and evaluating the optical zoom system. This expander lens is used to enlarge the focal lengths of an original main zoom lens two times, which unfortunately doubles the aperture size of the expander lens elements. Thus, this extended apertures significantly generate the aberrations of a zoom system. To solve the problem, an expander lens has been designed using the third-order aberration analysis numerically. Since an MWIR optical system uses a cooled detector, this zoom system should be designed to eliminate the narcissus effect. Using this design approach, we efficiently obtain an expander lens for an MWIR zoom system satisfying the current requirements.

关键词： Zoom lenses Monochromatic aberrations optical spheres Mid-IR Chemical elements Lens design Transparent conductors Modulation transfer functions Spherical lenses Infrared radiation

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Unlocking the Potential of Organic-Inorganic Hybrid Manganese Halides for Advanced Optoelectronic Applications

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ADVANCED MATERIALS 2024年第39期36卷 e2408777页

作者： Zhang, Wei Zheng, Wei Li, Lingyun Huang, Ping Xu, Jin Zhang, Wen Shao, Zhiqing Chen, Xueyuan Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fujian Key Lab Nanomat Fuzhou 350002 Fujian Peoples R China Chinese Acad Sci Fujian Inst Res Struct Matter CAS Key Lab Design & Assembly Funct Nanostruct Fuzhou 350002 Fujian Peoples R China Fuzhou Univ Coll Mat Sci & Engn Key Lab Adv Mat Technol & Int Hongkong Macao & Tai Joint Lab Adv Mat Technol Fuzhou 350108 Fujian Peoples R China

Organic-inorganic hybrid manganese(ii) halides (OIMnHs) have garnered tremendous interest across a wide array of research fields owing to their outstanding optical properties, abundant structural diversity, low-cost solution processibility, and low toxicity, which make them extremely suitable for use as a new class of luminescent materials for various optoelectronic applications. Over the past years, a plethora of OIMnHs with different structural dimensionalities and multifunctionalities such as efficient photoluminescence (PL), radioluminescence, circularly polarized luminescence, and mechanoluminescence have been newly created by judicious screening of the organic cations and inorganic Mn(ii) polyhedra. Specifically, through precise molecular and structural engineering, a series of OIMnHs with near-unity PL quantum yields, high anti-thermal quenching properties, and excellent stability in harsh conditions have been devised and explored for applications in light-emitting diodes (LEDs), X-ray scintillators, multimodal anti-counterfeiting, and fluorescent sensing. In this review, the latest advancements in the development of OIMnHs as efficient light-emitting materials are summarized, which covers from their fundamental physicochemical properties to advanced optoelectronic applications, with an emphasis on the structural and functionality design especially for LEDs and X-ray detection and imaging. current challenges and future efforts to unlock the potentials of these promising materials are also envisioned. This review focuses on the latest advancements in the development of organic-inorganic hybrid manganese(ii) halides as efficient light-emitting materials, which covers from their fundamental physicochemical properties to advanced optoelectronic applications, with an emphasis on the structural and functionality design especially for light-emitting diodes and X-ray scintillators. current challenges and future efforts toward this active research field are envisioned

关键词： anti-counterfeiting circularly polarized luminescence hybrid manganese halide light-emitting diode mechanoluminescence photoluminescence X-ray scintillator

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Simultaneous Multiple Surfaces method applied to infrared lenses 23

Simultaneous Multiple Surfaces method applied to infrared le...

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Conference on current developments in Lens design and optical engineering XXiiI Part of SPIE Optics and Photonics Conference

作者： Mayeur, T. Volatier, J. B. Druart, G. Tartas, E. Durand, A. Cau, F. Off Natl Etud & Rech Aerosp 6 Chemin Vauve Granges F-91120 Palaiseau France Lynred 364 Route Valence F-38113 Veurey Voroize France Safran Elect & Def 100 Ave Paris F-91300 Massy France

ISBN: (纸本)9781510654198;9781510654181

In optical design, the designer's experience is critical. Indeed, an experienced optical designer will often choose a better starting point for optimization than an inexperienced one. Most of the time, lens design software use a local optimization algorithm, which is why the starting point is so important to get an excellent optical system. We present here an alternative to the classical optical design method and a solution to reduce the impact of the designer's experience. Our alternative couples the Simultaneous Multiple Surfaces (SMS) method, introduced by Benitez and Minano with optimization in Zemax OpticStudio. The SMS method is a direct construction method of optical systems without optical aberrations for as many field points as the system contains surfaces. This method can deal with both aspheric and freeform optical systems depending on the dimension of the method implemented. Our implementation of the SMS method can design optical systems with three surfaces. We use the SMS method to define a freeform system with an F-number of 0.85. Then, we use this fast freeform system as a starting point to perform further optimization in Zemax OpticStudio. Finally, we achieve to design two diffraction-limited freeform systems, one over a square field of view of +/- 30 degrees and another over a rectangular field of view of +/- 33 degrees x +/- 26 degrees.

关键词： Simultaneous Multiple Surfaces freeform surfaces Cartesian oval automated method optical design

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