Solving for the desired focal length of the collimating lens yields. Gholographic company can offers variety of swir infrared lens for defense, flir system, and surveillance application. Lens design fundamentals, second edition, is the most comprehensive treatise to be published on the subject of lens design. Challenges and solutions for high performance swir lens design. In addition to the stock specifications available, kowa offers madetoorder zoom swir lenses to fit any longrange surveillance application. Plastic diffractionlimited wideangle airspaced cooke. Since silicon sensors have an upper limit of approximately 1. The lens surfaces are rotational symmetric and calculated to have good control of. A tutorial on electroopticalinfrared eoir institute for defense. Conrady in applied optics and optical design and rudolph kingslake in lens design. Ultracompact swir telephoto le ns design with sms method wang lin 1, pablo benitez 1,2, j. A large part of this book is devoted to a study of possible design procedures for various types of lens or mirror systems, with fully worked examples of each.
Nevertheless, lenses such as swir ones can be used for a number of. Photo model number lens format focal length iris range fstop mount data sheet compare. The 20 china lens design competition was to design a conjugate zoom lens with maximum magnification ratio, numerical aperture and field of view, and with specified image quality and distortion. A tutorial on electroopticalinfrared eoir theory and systems. All designs were constrained to have both the first and last lens groups fixed, with two middle moving groups. This paper will demonstrate the steps to achieve a petzval lens with fast aperture and moderate field that is achromatic in the swir and has low axial color in the lwir. The swir spectrum is an ideal choice for a variety of applications, including solar cell inspection, security, and biomedical imaging. This article discusses the advantages of a design conception to production optics supply partner. Using a lens designed for the visible spectrum will result in low resolution images and higher optical aberrations. Product focus, we introduce the new model 363 focus corrected swir lens for. Swir hyperspectral lenses navitars fixed focal length swir hyperspectral lenses are designed for swir short wave infrared cameras and applications. The book is divided into three parts, starting with basic mathematical concepts that are further applied in the book. Since i came from a electrical engineering background, i have sought to get more knowledge in the practical field of lens design beyond laser resonators and optical accesories.
Sep 03, 2015 a design study is compiled for a vis swir dual band 3x zoom lens. Lens design is, therefore, a strong component of a wellrounded education in optics, and a skill valued by industries employing optical engineers. We have recently introduced a new and novel design with switchable zoom ranges with coplanar foci to provide a x12. The design of a sensor is a tradeoff between these three factors, placed in the.
For that reason, bought this book, as well as the virendra n. Handbook of lens design optical science and engineering. A design study is presented to reveal combinations of plastic and glass lenses suitable for aberration correction. The mounted aspheric lens that is ar coated for our 2 m wavelength and most closely matches the desired focal length of 6. Swir series fixed focal length lenses edmund optics. Swir lenses have a super wide focal length 6mm and 8mm and low distortion of 0. Military applications of swir include lowlightnightvision imaging, detection of.
It is essential to use a lens that is both designed and coated for the swir wavelength band. The reader is urged to follow the logic of these examples and be sure that he understands what is happening, noticing particularly how each available degree of freedom is used to control one aberration. Techspec swir series fixed focal length imaging lenses are compact, lightweight lenses designed for applications operating in the shortwave infrared swir spectra, ranging from 0. This book holds a unique place in the optics literature. The design of a fixed focal length lens also known as prime lenses presents fewer challenges than the design of a zoom lens. While in a balanced design, each of the factors needs to be evaluated. Infrared lenses trace pro, oslo, optiwave design consultancy. Field guide to lens design 2012 bentley publications. Beck optronic solutions offers a range of high performance fixed focal length lenses and a zoom lens suitable for use in the swir 0. Commercial swir imaging cameras come in various camera sizes for 320. In addition, the problem of designing and producing broadband ar coatings for such a wide wavelength region will be considered.
Ar coated for r,, abstract this tutorial shows what to do when we design optomechanical system for imaging system. Infrared ir, sometimes called infrared light, is electromagnetic radiation emr with wavelengths longer than those of visible light. The design of swir imaging lenses using plastic optics. When utilized in conjuction with a swir camera, these lenses will permit imaging through silicon, imaging outdoors without additional illumination, detecting bruising on fruit, and a host of additional infrared.
High performance swir 50mm lens option solo sensors. An assessment of the advantages and disadvantages for each of the lens design forms will be provided together with a discussion of producibility limitations. Shortwave infrared swir light is typically defined as light in the 0. Lumitron offers our customers a wide range of offtheshelf optical solutions for each of our camera products. On the right is a commercial swir digital linescan camera with a 1024element linear array that features square 25. Unique coating technology delivers high transmission from 800nm1,700nm highresolution, lowdistortion design offers megapixel clarity in hyperspectral application. Swir short wave infrared lenses are specifically designed for machine vision applications in nir and swir. Ultracompact swir telephoto le ns design with sms method. It is therefore generally invisible to the human eye, although ir at wavelengths up to 1050 nanometers nms from specially pulsed lasers can be seen by humans under certain conditions. Swir lenses trace pro, oslo, optiwave design consultancy. Refractive lens design for simultaneous swir and lwir imaging. Ultracompact swir telephoto lens design with sms method. Edmund optics eo, the premier provider of optical components, introduces new techspec swir fixed focal length lenses to product line. Can you describe your optical design and manufacture capabilities to our readers in short.
The process of designing lenses is both an art and a science. Swir lenses can be used in a variety of applications including solar cell testing, outdoor night vision imaging security application, fruit surface. This swir lens features a manual locking focus and advanced optics delivering 90% throughput. Adapting existing lens designs from the visible region by recoating for swir will improve total transmission but diminished image quality. Solid catadioptric telephoto lens design with sms method. Kowas zoom swir lenses offer high transmission from to 2000 nanometers and are ir corrected to ensure flawless transitions from day to night without manual adjustments. Custom swir optics for material sorting and inspection pcn europe.
Infrared lenses, simultaneously color corrected at multiple wavelengths from 1. It adds impressive building blocks to the foundation established by a. Lens design, third edition, optical science and engineering. The initial first order design study investigated zoom motion, power in each lens group, and aperture stop location. These compact, lightweight lenses are ideal for applications operating in the shortwave infrared spectrum, from 0. High performance swir cameras need high resolution lenses. Fixed focal length lenses are designed for swir cameras. This paper explores the viability of using plastic optics in broadband swir imaging applications and the efficacy of using plastic lenses as a method of weight reduction. Basic principles about designing paraxial systems are introduced. These lenses feature swiroptimized optical designs, glass types, and ar coatings from 0. Not a must have book, but nice to have on your bookshelf.
A highquality prime lens whose focal length is about equal to the diameter of the film frame or sensor may be constructed from as few as four separate lens elements, often as pairs on either side of the aperture diaphragm. Ar coated for r swir short wave infrared lenses are specifically designed for machine vision applications in nir and swir. In lens design with large computers, proceedings of the conference, institute of optics, government superintendent, rochester, new york. We stock lwir lenses for our uc320 product, mwir lenses for our rc320 product and swir lenses for our nir320 product with a wide range of focal length choices to optimize performance for a given application. Navitars fixed focal length swir hyperspectral lenses are specifically designed for swir short wave infrared cameras and applications.
While advancements in the field over the past two centuries have done much to transform it from the former category to the latter, much of the lens design process remains encapsulated in the experience and knowledge of industry veterans. Comparing the acrylicpolycarbonateacrylic airspaced cooke triplet lens design with the other three plastic lens designs, the obtained results indicate that the acrylicpolycarbonateacrylic design can achieve the best image quality performance at 50% contrast 56 cyclesmm and strehl ratio 0. A lowkey textbook that covers material most graduate students would learn before moving on to computeraided optical design. As with all navitar imaging optics, the new swir lenses are constructed for rugged environments and come standard with thumb screws for locking the focus and iris functions.
For any given sensor and state of the technology employed, it may be the case that the sensor is signaltonoise limited. The lens achieves a high resolution solution in terms of modulation transfer function mtf. The design of a sensor is a tradeoff between these three factors, placed in the context of characteristics of the target and environment. Lens focal lengths include two 25mm designs, a 35mm and a 50mm design. Ultracompact swir telephoto lens design with sms method conference paper.
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