David H. Lippman, R. Chou, Ankur X. Desai, Nicholas S. Kochan, Tianyi Yang, Greg R. Schmidt, J. Bentley, D. Moore
Annular folded lenses (AFLs) offer high resolution monochromatic imaging in a low telephoto ratio package. Monolithic designs offer advantages but are inflicted with chromatic aberrations. Applying freeform gradient- index media enables more advanced, diffraction-limited monochromatic AFL designs. By optimizing the GRIN profile along with its dispersion, chromatic aberrations can also be corrected, granting high performing poly- chromatic designs.
{"title":"Design of annular folded lenses using freeform gradient-index optics","authors":"David H. Lippman, R. Chou, Ankur X. Desai, Nicholas S. Kochan, Tianyi Yang, Greg R. Schmidt, J. Bentley, D. Moore","doi":"10.1117/12.2603679","DOIUrl":"https://doi.org/10.1117/12.2603679","url":null,"abstract":"Annular folded lenses (AFLs) offer high resolution monochromatic imaging in a low telephoto ratio package. Monolithic designs offer advantages but are inflicted with chromatic aberrations. Applying freeform gradient- index media enables more advanced, diffraction-limited monochromatic AFL designs. By optimizing the GRIN profile along with its dispersion, chromatic aberrations can also be corrected, granting high performing poly- chromatic designs.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129353108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Makarenko, A. Burguete-Lopez, F. Getman, A. Fratalocchi
We introduce a universal design platform for the development of highly-efficient wavefront engineering structures. To validate this methodology, we fabricated many different optical devices with an experimental efficiency exceeding 99%.
{"title":"Highly-efficient flat-optics inverse design platform via fast trained neural predictors","authors":"M. Makarenko, A. Burguete-Lopez, F. Getman, A. Fratalocchi","doi":"10.1117/12.2603689","DOIUrl":"https://doi.org/10.1117/12.2603689","url":null,"abstract":"We introduce a universal design platform for the development of highly-efficient wavefront engineering structures. To validate this methodology, we fabricated many different optical devices with an experimental efficiency exceeding 99%.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"12078 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129977265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jorge Alvarado-Martínez, F. Granados-Agustin, A. Vázquez-Villa, S. Vázquez-y Montiel
The optical design of a reflective objective system of a thermal camera for a syndromic surveillance system that captures bio-clinical signals, like temperature, directly related to the physical symptoms of the COVID-19 disease through thermal images is presented. The design is based on an off-axis four mirror system that allows for correcting spherical, coma, astigmatism, and field curvature aberrations. The OFOS design works on wavelengths of 7.5 μm - 14 μm, with an f-number less than 5, and a field of view (FOV) greater than 10 degrees.
{"title":"Optical design of an off-axis four-mirror objective system (OFOS) for a thermal camera","authors":"Jorge Alvarado-Martínez, F. Granados-Agustin, A. Vázquez-Villa, S. Vázquez-y Montiel","doi":"10.1117/12.2603677","DOIUrl":"https://doi.org/10.1117/12.2603677","url":null,"abstract":"The optical design of a reflective objective system of a thermal camera for a syndromic surveillance system that captures bio-clinical signals, like temperature, directly related to the physical symptoms of the COVID-19 disease through thermal images is presented. The design is based on an off-axis four mirror system that allows for correcting spherical, coma, astigmatism, and field curvature aberrations. The OFOS design works on wavelengths of 7.5 μm - 14 μm, with an f-number less than 5, and a field of view (FOV) greater than 10 degrees.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"13 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122994147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A hyper-aspheroid is a surface of revolution (with a specified vertex curvature) that nears or extends beyond where it’s parallel to the axis. The familiar ‘hyperhemispherical’ is one limiting example, but the superconic and rational Bézier approaches are more flexible. Both will be applied to the redesign of a condenser system from the late Juan Rayces’ Eikonal program but using the author’s own design code.
{"title":"Hyper-aspheroidal surfaces: two approaches","authors":"A. W. Greynolds","doi":"10.1117/12.2603614","DOIUrl":"https://doi.org/10.1117/12.2603614","url":null,"abstract":"A hyper-aspheroid is a surface of revolution (with a specified vertex curvature) that nears or extends beyond where it’s parallel to the axis. The familiar ‘hyperhemispherical’ is one limiting example, but the superconic and rational Bézier approaches are more flexible. Both will be applied to the redesign of a condenser system from the late Juan Rayces’ Eikonal program but using the author’s own design code.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116944337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the field of Entertainment Stage Lighting there is wide variety of luminaires with beams of different intensity distributions. It would be advantageous if the optics allowed to adjust the edge sharpness.
{"title":"A unusual zoom design for a variable edge beam","authors":"H. Rehn","doi":"10.1117/12.2603649","DOIUrl":"https://doi.org/10.1117/12.2603649","url":null,"abstract":"In the field of Entertainment Stage Lighting there is wide variety of luminaires with beams of different intensity distributions. It would be advantageous if the optics allowed to adjust the edge sharpness.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115539767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recently, the general exact equation to design a stigmatic lens has been found and extensively studied. In this manuscript, we discuss what we have learned by obtaining such an equation and its implications.
{"title":"The general equation of the stigmatic lenses: its history and what we have learned from it","authors":"Rafeal G. Gonzalez-Acuna, Simon Thibault","doi":"10.1117/12.2603611","DOIUrl":"https://doi.org/10.1117/12.2603611","url":null,"abstract":"Recently, the general exact equation to design a stigmatic lens has been found and extensively studied. In this manuscript, we discuss what we have learned by obtaining such an equation and its implications.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114153179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this invited paper, a simple and efficient matrix formalism is presented for computing aberrations in plane-parallel freeform mirror systems. The approach is flexible and can be easily generalized to arbitrary aberration orders and/or to systems with different symmetries. As an illustration, we derive analytical expressions for all 2nd and 3rd order image and pupil aberrations in plane-parallel confocal N-mirror systems. Some design examples are also presented and discussed.
{"title":"Progress in aberration theory for freeform off-axis mirror systems","authors":"J. Caron, Tiberiu Ceccotti, S. Bäumer","doi":"10.1117/12.2603625","DOIUrl":"https://doi.org/10.1117/12.2603625","url":null,"abstract":"In this invited paper, a simple and efficient matrix formalism is presented for computing aberrations in plane-parallel freeform mirror systems. The approach is flexible and can be easily generalized to arbitrary aberration orders and/or to systems with different symmetries. As an illustration, we derive analytical expressions for all 2nd and 3rd order image and pupil aberrations in plane-parallel confocal N-mirror systems. Some design examples are also presented and discussed.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114082225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The diffraction efficiency of conventional diffractive lenses is typically analyzed using the complex Fourier series expansion coefficients. While conventional diffractive lenses typically target high diffraction efficiency in a single diffractive order, applications such as multifocal intraocular lenses seek high diffraction efficiency in multiple diffractive orders. Here, the complex Fourier series technique is generalized to handle these multifocal lenses, and applied to a novel trifocal intraocular lens design.
{"title":"Diffractive multifocal lens analysis using complex Fourier series","authors":"J. Schwiegerling","doi":"10.1117/12.2603645","DOIUrl":"https://doi.org/10.1117/12.2603645","url":null,"abstract":"The diffraction efficiency of conventional diffractive lenses is typically analyzed using the complex Fourier series expansion coefficients. While conventional diffractive lenses typically target high diffraction efficiency in a single diffractive order, applications such as multifocal intraocular lenses seek high diffraction efficiency in multiple diffractive orders. Here, the complex Fourier series technique is generalized to handle these multifocal lenses, and applied to a novel trifocal intraocular lens design.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121020020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We propose a lens design ray tracing engine that is derivative-aware, using automatic differentiation. This derivative-aware property enables the engine to infer gradients of current design parameters, i.e., how design parameters affect a given error metric (e.g., spot RMS or irradiance values), by back-propagating the derivatives through a computational graph via differentiable ray tracing. Our engine not only enables designers to employ gradient descent and variants for design optimization, but also provides a numerically compatible way to perform back-propagation on both the optical design and the post-processing algorithm (e.g., a neural network), making hardware-software end-to-end designs possible. Examples are demonstrated by freeform designs and joint optics-network optimization for extended-depth-of-field applications.
{"title":"Lens design optimization by back-propagation","authors":"Congli Wang, Ni Chen, W. Heidrich","doi":"10.1117/12.2603675","DOIUrl":"https://doi.org/10.1117/12.2603675","url":null,"abstract":"We propose a lens design ray tracing engine that is derivative-aware, using automatic differentiation. This derivative-aware property enables the engine to infer gradients of current design parameters, i.e., how design parameters affect a given error metric (e.g., spot RMS or irradiance values), by back-propagating the derivatives through a computational graph via differentiable ray tracing. Our engine not only enables designers to employ gradient descent and variants for design optimization, but also provides a numerically compatible way to perform back-propagation on both the optical design and the post-processing algorithm (e.g., a neural network), making hardware-software end-to-end designs possible. Examples are demonstrated by freeform designs and joint optics-network optimization for extended-depth-of-field applications.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131863945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Axial as well as lateral color aberrations in broadband optical systems can efficiently be corrected by using diffractive optical elements (DOEs). However, DOEs such as kinoforms consisting of only one material are not suitable for high-quality optics because of straylight in spurious diffraction orders. The amount of stray light can significantly be reduced by using so-called efficiency-achromatized DOEs (EA-DOEs), which consist of a material pair whose refractive indices fulfill a specific material condition. Unfortunately, manufacturing of EA-DOEs is very challenging because the grating structures are subject to tight fabrication tolerances. Therefore, only few broadband optical systems with EA-DOEs are on the market. Here we show that DOEs in broadband optical systems can surprisingly be replaced by refractive doublets made of materials that fulfill the material condition for EA-DOEs. As opposed to the EA-DOEs themselves, these purely refractive replacements do not suffer from stray light. In addition, from a theoretical point of view, our result allows for understanding the effect of DOEs in optical designs by classical refractive optical design theory.
{"title":"How to replace diffractive optical elements for color correction by refractive lenses from specific materials","authors":"M. Seesselberg, Daniel Werdehausen","doi":"10.1117/12.2603629","DOIUrl":"https://doi.org/10.1117/12.2603629","url":null,"abstract":"Axial as well as lateral color aberrations in broadband optical systems can efficiently be corrected by using diffractive optical elements (DOEs). However, DOEs such as kinoforms consisting of only one material are not suitable for high-quality optics because of straylight in spurious diffraction orders. The amount of stray light can significantly be reduced by using so-called efficiency-achromatized DOEs (EA-DOEs), which consist of a material pair whose refractive indices fulfill a specific material condition. Unfortunately, manufacturing of EA-DOEs is very challenging because the grating structures are subject to tight fabrication tolerances. Therefore, only few broadband optical systems with EA-DOEs are on the market. Here we show that DOEs in broadband optical systems can surprisingly be replaced by refractive doublets made of materials that fulfill the material condition for EA-DOEs. As opposed to the EA-DOEs themselves, these purely refractive replacements do not suffer from stray light. In addition, from a theoretical point of view, our result allows for understanding the effect of DOEs in optical designs by classical refractive optical design theory.","PeriodicalId":386109,"journal":{"name":"International Optical Design Conference","volume":"12078 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129734671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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