Using these values for r and va in equation 3, the length l of the lenses can be calculated to be 17. The apparatus of claim 14, the selfoc lens being an sla12 lens, and the angle of each prism being not less than about 52. They are used as collimators or lenses for filter components. Fabrication and applications of lens arrays and devices. Chromatic aberration of the selfoc lens as an imaging system. In the present study, a novel ultraprecision diamond cutting method, as the endflycuttingservo efcs system, is adopted and investigated for. Osa largescale fabrication of microlens array by novel. Haskelllenses and functional references wikibooks, open. A comprehensive study and reference guide, volume i, encompasses the basic fundamentals of contact lens technology. Experience consistent vision across multiple pairs of eyewear with availability in the most lens materials and treatments. 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. Recent progress of optical fiber communication systems bring about tremendous possibilities of digital communication.
Lens array homogenizers can be used to create line. A sla selfoc lens array is composed of many selfoc lens in a strict manner. For example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Micro lens arrays are used to homogenize light paths from projectors and to guide the beams into laser projector systems. Imaging properties and measurement of selfoc lens and sla ieee. 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. These lenslet arrays are manufactured using photolithographic techniques based on semiconductor processing technology, yielding exceptionally accurate microlens profiles and lens. The adaptive lens array we have developed is an important step towards making the concept of flexible sheet cameras viable. Thoroughly revised and updated, this popular book provides a comprehensive yet easy to read guide to modern contact lens practice. 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. The arrays are composed of one or more rows of lenses. 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. The refractive index variation in the material is created by ion exchange. Us7225984b2 systems and methods for providing multiple.
The product allows a wide variety of dynamic 4d effects. I love the contact lens manual it is a great reference book and it helped me pass my ncle. Selfoc selfoc and selguide technologies lens array sla. Browse the amazon editors picks for the best books of 2019, featuring our.
Micro lens arrays are a relatively new technology which are now widely used for such applications as optical switching, dwdm and waveguides. 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. The lenses were tested using a confocal microscope with a. It then updates the defined field by applying the lens with the new value. 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. Thus it is an important component in optical communication and integrated optics. For example, lens array 110 may comprise a selfoc lens array sla, which is manufactured and sold by nippon sheet glass co. Ittc to w avelength 685, 700,720,780 100 dpi 1ut k o t. Assessment in the contemporary masjid with special reference to nontraditional forms, case study. Shortening the rod to a length of 14 pitch, as shown in fig. 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 from. You have clicked a page that seems to be very popular.
Lenses of that kind are commercially available under the trade name selfoc, a derivative from selffocusing. Us6892945b2 structure for preventing extraneous light. 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. Pdf interference filters as nonlinear decisionmaking. Array lenses use a proprietary 3d design software to model nearly every scenario of how human eyes truly see with each prescription. Microlens arrays with spatial variation of the optical functions. 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. 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. Multiple row lens array alignable with multiple row image bar.
The result is optimal intermediate and reading area placement and balanced design symmetry. All lensonlens structures were fabricated not as an isolated lens but as an array on a transparent plas. Oct 22, 1996 for example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Service manual service manual ir1200 series ir1570f jun 17 2004. 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. This exciting new technology was designed exclusively for the brand authentication and security printing markets. Light passing through a gradientindex lens is focused as in a convex lens. Solution a selfoc lens array sla is a compact image transfer device that is.
These lens array homogenizers are carefully designed to produce flattop spots at the focus of a lens. Optical element for a document illuminator xerox corporation. Apr 17, 2016 the adaptive lens array we have developed is an important step towards making the concept of flexible sheet cameras viable. 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. Selfoc microlenses are flatended gradientindex lenses. By how much does the image move if the object is moved a 1.
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. The result is optimal intermediate and reading area placement and balanced design symmetry for wide, stable and natural vision. Chromatic aberration of the selfoc lens as an imaging system osa. Flexible optical produces highquality replicated microlens arrays specially for the use with frontsurfer wavefront sensors. Multiple row lens array alignable with multiple row image. If the length of such a lens is identified as t, then the focal length is expressed by 1. It is for students of contact lens fitting in colleges and universities, and for firms and individuals who. This means that the rubber bumper strip surrounding your car could.
Its not so easy to send light where it should go source. A rodlens array may comprise at least one row of gradedindex micro lenses, which may be equal. Interference filters as nonlinear decisionmaking elements for threespot pattern recognition and associative memories. It is for students of contact lens fitting in colleges and universities, and for firms and individuals who support and promote continuing education. You can order it through the contact lens society i would suggest giving them a call rather than ordering online. Page 3 when changes occur in applicable products or in the contents of this manual, canon will release technical information as the need arises. Consult selfoc lens array reference book for complete design and application data.
Efficient and versatile the doublesided polymer micro lens arrays can be used in costeffective mass production thanks to a unique tool technology. The apparatus of claim 8, the collection optics including a selfoc lens. 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. 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. A comprehensive study and reference guide, volume ii, is an advanced manual that explores the most challenging areas of contact lens technology. 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. Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of microlens array mla.
If item is not in stock, delivery is usually 12 weeks. Luminous intensity of a gradientindex lens array osa. Instead of a ball lens, a gradient index lens is frequently used as a fiber coupling element. Microlens arrays with spatial variation of the optical. A microlens array used in conjunction with a ccd array can constitute the core of a shackhartmann wavefront sensor. However, it is still a challenge to process mla in large scale due to certain inherent limitations of this technique. The images from adjacent lenses overlap and form a continuous erect image. Selfoc lens arrays for line scanning applications dtsheet. Building on the foundation of the first edition, this comprehensive reference. This setup for microlens array characterization is described in 8. Fredos full aperture, 5mm why are lenses so complex. 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. Lens array 110 may comprise an array of rodshaped lenses which have a relatively short depth of focus.
They range from beam transformation for fiber coupling over the homogenization of laser light up to the efficient. This lab is designed to familiarize you with micro lens arrays, and its use in diagnostics of phase front distortions. Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627 text. 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. Microlens arrays with superior form accuracy are used for applications, where reliability and highest efficiency are crucial criteria. 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. Selfoc mircolens calculations magnification selfoc microlens arrays. Selfoc selfoc and selguide technologies lens array. 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 apparatus of claim 14, the selfoc lens being an sla09 lens, and the angle of each prism being not less than about 48. Optical fiber and photodetector array for robotic seam tracking. 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. 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.
106 614 675 556 1210 623 194 1367 797 1473 729 1533 336 1134 976 14 1151 497 1495 589 942 464 858 999 1173 441 1495 1043 1368 1341