Grin lenses have extremely low aberrations for objects near the optical axis, making them excellent for collimating diode lasers or coupling light into multimode optical fibers. Micro lens arrays are a relatively new technology which are now widely used for such applications as optical switching, dwdm and waveguides. Oct 22, 1996 for example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Consult selfoc lens array reference book for complete design and. The slas short total conjugate tc, ranging from 9 to 80 mm, allows the designer to decrease the optical path length and, thus, reduce the overall. Solution a selfoc lens array sla is a compact image transfer device that is. They range from beam transformation for fiber coupling over the homogenization of laser light up to the efficient combination of laser stacks of identical wavelength. The adaptive lens array we have developed is an important step towards making the concept of flexible sheet cameras viable.
Microflex is a unique and visually stunning new ultra thin lens array film developed by forward and available exclusively and securely through our certified print partners. Selfoc mircolens calculations magnification selfoc microlens arrays. Apr 17, 2016 the adaptive lens array we have developed is an important step towards making the concept of flexible sheet cameras viable. The company provides additional detailed information, such as website, fax and telephone numbers, contact persons, history and company data. A rodlens array may comprise at least one row of gradedindex micro lenses, which may be equal. Browse the amazon editors picks for the best books of 2019, featuring our. Light passing through a gradientindex lens is focused as in a convex lens. Ittc to w avelength 685, 700,720,780 100 dpi 1ut k o t. This setup for microlens array characterization is described in 8. Shortening the rod to a length of 14 pitch, as shown in fig.
Experience consistent vision across multiple pairs of eyewear with availability in the most lens materials and treatments. Lenses of that kind are commercially available under the trade name selfoc, a derivative from selffocusing. Chromatic aberration of the selfoc lens as an imaging system osa. All lens on lens structures were fabricated not as an isolated lens but as an array on a transparent plastic film on a large scale. Service manual service manual ir1200 series ir1570f jun 17 2004.
A comprehensive study and reference guide, volume i, encompasses the basic fundamentals of contact lens technology. Selfoc microlenses are flatended gradientindex lenses. Beyond being very interesting from a conceptual point of view, lenses and other functional references allow for several convenient and increasingly common idioms, put into use by a number of useful libraries. Alibaba manufacturer directory suppliers, manufacturers. Chromatic aberration of the selfoc lens as an imaging system. It then updates the defined field by applying the lens with the new value. If item is not in stock, delivery is usually 12 weeks. This means that the rubber bumper strip surrounding your car could. Selfoc lens arrays for line scanning applications dtsheet. A wide variety of multi lens array options are available to you, there are 90 suppliers who sells multi lens array on, mainly located in asia.
Thoroughly revised and updated, this popular book provides a comprehensive yet easy to read guide to modern contact lens practice. As a standard option, we offer a hexagonal array of 127 microlenses with a focal distance of 18 mm and a pitch of 300 m, mounted in a cmount. This lab is designed to familiarize you with micro lens arrays, and its use in diagnostics of phase front distortions. A gradient index lens array selfoc lens array which is composed by several hundred pieces of gradient index micro lenses together in an array has been developed by nsg.
Assessment in the contemporary masjid with special reference to nontraditional forms, case study. You have clicked a page that seems to be very popular. The apparatus of claim 8, the collection optics including a selfoc lens. This manual is ideal for the contact lens professional seeking to expand their fitting skills beyond the fundamentals covered in volume i. Imaging properties and measurement of selfoc lens and sla ieee.
Multiple row lens array alignable with multiple row image bar. Multiple row lens array alignable with multiple row image. Luminous intensity of a gradientindex lens array osa. Microlens arrays with spatial variation of the optical. A microlens array is commonly used for homogenizing and shaping a variety of modern light emitters ranging from a linenarrowed excimer lasers to high power leds. Optical element for a document illuminator xerox corporation. The arrays are composed of one or more rows of lenses.
Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of microlens array mla. They are used as collimators or lenses for filter components. Four different types of micro lens on lens array structures, one of which corresponds to an array of a compound eye lens, were fabricated on a commercial plastic film using a novel fabrication technique. Optical fiber and photodetector array for robotic seam tracking. Flexible optical produces highquality replicated microlens arrays specially for the use with frontsurfer wavefront sensors. A microlens array used in conjunction with a ccd array can constitute the core of a shackhartmann wavefront sensor. For example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Fabrication and applications of lens arrays and devices. The light emitted from the light guides 11 illuminates a document on the platen glass 107 or continuous reading glass 109, as shown in fig. Haskelllenses and functional references wikibooks, open. It is for students of contact lens fitting in colleges and universities, and for firms and individuals who. As seen from the figure below, a planar wavefront that is transmitted through a microlens array and imaged on a ccd sensor will form a regular pattern of bright spots. Using these values for r and va in equation 3, the length l of the lenses can be calculated to be 17.
A comprehensive study and reference guide, volume ii, is an advanced manual that explores the most challenging areas of contact lens technology. The result is optimal intermediate and reading area placement and balanced design symmetry. Application of a contour boring tool in an ultra precision machine omrons new sensor, the gen3 laser radar lidar sensor using omrons micro lens array technology can handle both long and shortrange sensing. Fredos full aperture, 5mm why are lenses so complex. Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627 text. Us7225984b2 systems and methods for providing multiple. These lens array homogenizers are carefully designed to produce flattop spots at the focus of a lens. Four different types of micro lensonlens array structures, one of which corresponds to an array of a compound eye lens, were fabricated on a commercial plastic film using a novel fabrication technique. In the present study, a novel ultraprecision diamond cutting method, as the endflycuttingservo efcs system, is adopted and investigated for. The images from adjacent lenses overlap and form a continuous erect image. Micro lens arrays are used to homogenize light paths from projectors and to. However, it is still a challenge to process mla in large scale due to certain inherent limitations of this technique. For example, lens array 110 may comprise a selfoc lens array sla, which is manufactured and sold by nippon sheet glass co.
Instead of a ball lens, a gradient index lens is frequently used as a fiber coupling element. Selfoc selfoc and selguide technologies lens array sla. Contact lens manual is for the person who aspires to a career in contactlens fitting, whether they are currently fitting lenses or plan to enter the field. Lens array 110 may comprise an array of rodshaped lenses which have a relatively short depth of focus. In the event of major changes in the contents of this manual over a long or short period, canon will issue a new edition of this manual. Osa largescale fabrication of microlens array by novel. Such a lens has a gradient profile in which the refractive index varies in the direction perpendicular to the optical axis, as expressed in eq. Us6892945b2 structure for preventing extraneous light. Gradient index micro lenses grin lenses have a radially varying index of refraction that causes an optical ray to follow a sinusoidal propagation path through the lens. A sla selfoc lens array is composed of many selfoc lens in a strict manner. The lenses were tested using a confocal microscope with a. The lens can be made concave to eliminate intersystem focal planes or even toroidal to produce rectangles while maximizing efficiency. Lens array homogenizers can be used to create line. Beautifully redesigned in a clean, contemporary layout, this second edition presents relevant and uptodate information in a systematic manner, with a logical flow of subject matter from front to back.
The apparatus of claim 14, the selfoc lens being an sla12 lens, and the angle of each prism being not less than about 52. Contact lens manual is for the person who aspires to a career in contact lens fitting, whether they are currently fitting lenses or plan to enter the field. Selfoc selfoc and selguide technologies lens array. Recent progress of optical fiber communication systems bring about tremendous possibilities of digital communication. Pdf interference filters as nonlinear decisionmaking. These lenslet arrays are manufactured using photolithographic techniques based on semiconductor processing technology, yielding exceptionally accurate microlens profiles and lens. Consult selfoc lens array reference book for complete design and application data. The result is optimal intermediate and reading area placement and balanced design symmetry for wide, stable and natural vision. Thus it is an important component in optical communication and integrated optics. I love the contact lens manual it is a great reference book and it helped me pass my ncle. They range from beam transformation for fiber coupling over the homogenization of laser light up to the efficient.
In these optical fiber communications systems, lenses play an important role for coupling the light between optical devices such as lds laser diodes, fibers and pds photodetectors. Its not so easy to send light where it should go source. Building on the foundation of the first edition, this comprehensive reference. Updated worldwide glass market study 2020 available now for flat, container glass and tableware we have updated our international studies on flat glass, container glass and tableware for 2020. The refractive index variation in the material is created by ion exchange. Microlens arrays with superior form accuracy are used for applications, where reliability and highest efficiency are crucial criteria. Interference filters as nonlinear decisionmaking elements for threespot pattern recognition and associative memories. All lensonlens structures were fabricated not as an isolated lens but as an array on a transparent plas. By how much does the image move if the object is moved a 1.
Micro lens arrays are used to homogenize light paths from projectors and to guide the beams into laser projector systems. The apparatus of claim 14, the selfoc lens being an sla09 lens, and the angle of each prism being not less than about 48. This exciting new technology was designed exclusively for the brand authentication and security printing markets. Array lenses use a proprietary 3d design software to model nearly every scenario of how human eyes truly see with each prescription. The product allows a wide variety of dynamic 4d effects. Microlens arrays with spatial variation of the optical functions. Us6892945b2 structure for preventing extraneous light from. It is for students of contact lens fitting in colleges and universities, and for firms and individuals who support and promote continuing education. Page 3 when changes occur in applicable products or in the contents of this manual, canon will release technical information as the need arises. Efficient and versatile the doublesided polymer micro lens arrays can be used in costeffective mass production thanks to a unique tool technology. If the length of such a lens is identified as t, then the focal length is expressed by 1. The manual guides the contact lens professional from the basics of anatomy and physiology, optics and instrumentation through the fitting of soft and gas permeable contact lenses. You can order it through the contact lens society i would suggest giving them a call rather than ordering online.
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