New tools for finding first-order zoom lens solutions and the analysis of zoom lenses during the design process

Yee, Anthony; Williams, Daniel J.; Gandara-Montano, Gustavo A.; McCarthy, Peter W.; Bentley, Julie; Moore, Duncan T.

doi:10.1117/12.2186780

Cited by 7 publications

(9 citation statements)

References 2 publications

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“…Other methods for classical zoom lenses, specifically the ones proposed by Yee et al 23 and Lippmann et al, 25 do perform an analysis of the solution space and generate a large number of first-order solutions. They even include the first steps of thick lens design, which can be performed in a more standardized way for groups without tunable lenses.…”

Section: Comparison With Other Zoom Lens Design Methodsmentioning

confidence: 99%

“…Although there is a wide range of literature discussing first-order calculation approaches for zoom lenses based on tunable lenses in detail, 22 the number of studies covering methods for a systematic search for layouts for this kind of zoom systems seems to be quite limited. Unlike other methods for classical zoom lenses, [23][24][25] our method sets the main focus on mapping the first-order solution space applying traditional thin lens aberration equations. 26,27 This is based on an extension of ideas presented in our earlier work.…”

Section: Introductionmentioning

confidence: 99%

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Design method for zoom systems based on tunable lenses

2022

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It is well known that tunable lenses, with refractive power that can be varied, e.g., by changing the curvature of a membrane, can replace the motion of lens groups in zoom systems. Similar to classical zoom systems, the performance of these systems is heavily influenced by the fundamental first-order layout. Moreover, the first-order layout sets the most important requirements for the employed tunable lenses. In this contribution, we present a method for the analysis of a large number of possible first-order solutions for typical requirements and for the selection of the most promising layouts. The first-order solution space is mapped, allowing the layouts to be automatically filtered and plotted depending on pre-defined characteristics. Ray tracing of the marginal and chief rays combined with the traditional thin lens aberration theory provide efficient estimations of the expected installation space requirements and performance for each firstorder layout. Using an example, we demonstrate good agreement between these estimations and the corresponding real lens layout, optimized by commercial raytracing software. The presented design method for zoom systems based on tunable lenses is compared with similar approaches for classical zoom lenses.

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Section: Comparison With Other Zoom Lens Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design method for zoom systems based on tunable lenses

2022

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“…Although applied here to anamorphic cinema zoom lenses, the fundamentals of the presented Monte Carlo search process can be applied to any highly diverse design space as an efficient way of globally searching for starting points. For example, similar processes have been applied in the past to the design of four group zoom lenses 19,20 and riflescopes. 21…”

Section: Monte Carlo Searchmentioning

confidence: 99%

“…5) is applied separately in the x − z and y − z planes. The infinite conjugate four-group zoom motion can be derived by repurposing a finite conjugate two-group zoom 17 as the two internal moving groups over an internal distance L. The full four-group zoom is then obtained by adding the stationary front and rear groups to the two-group finite zoom to achieve infinite conjugate imaging, as done by Yee et al 19 Given a system EFL zoom range, TTL, BFL, and group focal lengths f 1 , f 2 , f 3 , and f 4 , the zoom motions t 1 , t 2 , and t 3 of a four-group zoom system are calculated as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 2 ; 1 1 6 ; 2 3 4 VL ¼ TTL − BFL;…”

Section: Solution Generationmentioning

confidence: 99%

“…Many different techniques for practically achieving these first-order requirements have been presented including Monte Carlo methods. [19][20][21] Due to the prevalence of both anamorphic and zoom lenses in cinema, joint anamorphic zoom lenses are, naturally, also an essential cinematographic tool. Anamorphic zoom lens designs have historically separated the anamorphic elements and the zoom moving groups.…”

Section: Introductionmentioning

confidence: 99%

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Monte Carlo first-order design method for anamorphic cinema zoom lenses

2021

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Anamorphic zoom lenses, used extensively in the motion picture industry, pose a significant design challenge, combining the difficulties of designing a high-performance zoom lens with those of designing an anamorphic lens. As a result, considerable emphasis must be placed on the first-order configuration of the starting point design before interfacing with optical design software. A Monte Carlo search method is introduced for generating first-order designs of anamorphic zoom lenses based on two different configurations. The obtained designs possess valid zoom motions and ray trace successfully while satisfying a set of system specifications. This search method offers a time effective and illustrative way of exploring the global solution space of first-order designs for use as starting points on the way to a thick lens, color-corrected final design. The results of such a Monte Carlo search are presented for two types of anamorphic zoom configurations, and a design example is demonstrated. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Advances in infrared gradient refractive index (GRIN) materials: a review

et al. 2020

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Optical materials capable of advanced functionality in the infrared will enable optical designs that can offer lightweight or small footprint solutions in both planar and bulk optical systems. The University of Central Florida's Glass Processing and Characterization Laboratory, together with our collaborators, have been evaluating compositional design and processing protocols for both bulk and film strategies employing multicomponent chalcogenide glasses (ChGs). These materials can be processed with broad compositional flexibility that allows tailoring of their transmission window, physical and optical properties, which allows them to be engineered for compatibility with other homogeneous amorphous or crystalline optical components. We review progress in forming ChG-based gradient refractive index (GRIN) materials from diverse processing methodologies, including solution-derived ChG layers, poled ChGs with gradient compositional and surface reactivity behavior, nanocomposite bulk ChGs and glass ceramics, and metalens structures realized through multiphoton lithography. We discussed current design and metrology tools that lend critical information to material design efforts to realize next-generation IR GRIN media for bulk or film applications.

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New tools for finding first-order zoom lens solutions and the analysis of zoom lenses during the design process

Cited by 7 publications

References 2 publications

Design method for zoom systems based on tunable lenses

Design method for zoom systems based on tunable lenses

Monte Carlo first-order design method for anamorphic cinema zoom lenses

Advances in infrared gradient refractive index (GRIN) materials: a review

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