Design and characterization of an infrared Alvarez lens

Smilie, Paul J.; Dutterer, Brian S.; Lineberger, Jennifer L.; Davies, Matthew A.; Suleski, Thomas J.

doi:10.1117/1.oe.51.1.013006

Cited by 40 publications

(14 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alvarez 36 applied two complementary freeform optical components represented by third-order XY polynomials to realize a varying-focal-length lens system. Smilie et al 37 fabricated a germanium Alvarez lens for infrared imaging under conditions of modern precision optical manufacturing. Hicks 38 developed a ray-tracing method to obtain a discrete data point cloud for a freeform reflector, which was used to design a 45-deg field of view and a lower-distortion driver-side mirror to effectively increase the driver's field of view.…”

Section: Applications Of Different Types Of Opticalmentioning

confidence: 99%

Review of optical freeform surface representation technique and its application

Chen

et al. 2017

Opt. Eng

View full text Add to dashboard Cite

Abstract. Modern advanced manufacturing and testing technologies allow the application of freeform optical elements. Compared with traditional spherical surfaces, an optical freeform surface has more degrees of freedom in optical design and provides substantially improved imaging performance. In freeform optics, the representation technique of a freeform surface has been a fundamental and key research topic in recent years. Moreover, it has a close relationship with other aspects of the design, manufacturing, testing, and application of optical freeform surfaces. Improvements in freeform surface representation techniques will make a significant contribution to the further development of freeform optics. We present a detailed review of the different types of optical freeform surface representation techniques and their applications and discuss their properties and differences. Additionally, we analyze the future trends of optical freeform surface representation techniques.

show abstract

Section: Applications Of Different Types Of Opticalmentioning

confidence: 99%

Review of optical freeform surface representation technique and its application

Chen

et al. 2017

Opt. Eng

View full text Add to dashboard Cite

show abstract

“…Recent publications analyze the form and quality of the on-axis phase function or spot diagram generated by Alvarez-Lohmann lenses [16,17]. Since the elements are nonrotationally symmetric free forms, aberrations occur that are specific for off axis propagation, like coma and astigmatism.…”

Section: Optimizing Alvarez-lohmann Lensesmentioning

confidence: 99%

“…As starting system for the optimization, an Alvarez lens was chosen, which was designed and published by Smilie et al [16,27]. Due to the detailed description of the system it was possible to model the design in the ray-tracing software Zemax.…”

Section: Starting Systemmentioning

confidence: 99%

“…To cover a focal-length range from 38.2 to 171.9 mm a weighting constant of A ref 0.0012 mm −2 and a maximum lateral shift of h 1.8 mm were selected. Smilie et al [16] discussed in detail the influence of the systems aperture D and the gap between the phase plates Δz on the on-axis imaging quality. Three different axial distances (Δz 200, 400, 800 μm) were analyzed.…”

Section: Starting Systemmentioning

confidence: 99%

See 1 more Smart Citation

Aberration analysis of optimized Alvarez–Lohmann lenses

2014

View full text Add to dashboard Cite

In this paper aberrations in Alvarez-Lohmann lenses are analyzed, and a semi-analytical strategy for compensation is derived. An x-y polynomial model is used to describe the aberrations and classify them into static and dynamic components. The lenses are enhanced by higher-order polynomials, and a numerical optimization process is used to determine the most influential coefficients. Two simulations of corrected systems are presented. The first one is optimized for on-axis imaging. The second system is optimized for multiple field points and shows the limitations of a single Alvarez-Lohmann lens. Two systems overcoming these limitations by introducing additional optical surfaces are presented, and their performance is analyzed in simulations.

show abstract

“…Guangya Zhou's group demonstrated MEMS-driven miniature adaptive Alvarez lens [3], [4]. Paul J. Smilie and his colleges demonstrated an application of Alvarez lenses for mid-wave and long-wave [19]. S.Petsch and Alesksey N.Simonov demonstrated the usage of Alvarez lenses as intraocular vari-focal lens for human eyes [20], [21].…”

Section: Introductionmentioning

confidence: 99%

Ultra Slim Optical Zoom System Using Alvarez Freeform Lenses

et al. 2019

View full text Add to dashboard Cite

In this paper, we proposed an ultra slim optical zoom system with Alvarez freeform lenses. A 3X optical zoom system with two pairs of Alvarez lenses was developed. Alvarez lenses are fabricated by precise injection molding and the movable elements are actuated by voice coil motors. A slim camera module was fabricated with a size of 25 mm(width)×25 mm(length)×6 mm(height). The zooming and imaging capabilities of this Alvarez zoom system are demonstrated experimentally. The prototype exhibits a promising future for space-constrained application such as mobile phone camera module, wearable imaging system and endoscopic system.

show abstract

Design and characterization of an infrared Alvarez lens

Cited by 40 publications

References 17 publications

Review of optical freeform surface representation technique and its application

Review of optical freeform surface representation technique and its application

Aberration analysis of optimized Alvarez–Lohmann lenses

Ultra Slim Optical Zoom System Using Alvarez Freeform Lenses

Contact Info

Product

Resources

About