Osa largescale fabrication of microlens array by novel. If item is not in stock, delivery is usually 12 weeks. It is for students of contact lens fitting in colleges and. Highresolution shackhartmann sensor uses grin lens array. Imaging properties and measurement of selfoc lens and sla ieee. A novel video logging method based on the selffocus lens. However, it is still a challenge to process mla in large scale due to certain inherent limitations of this technique.
An incoming light ray is first refracted when it enters the shaped lens surface because of the abrupt change of the refractive index from air to the homogeneous material. These include collimators for a wide variety of applications and lens arrays for medical scanning. The high precision of the lateral array dimensions better than 0. This barcode number lets you verify that youre getting exactly the right version or edition of a book. These fused silica microlens arrays are available mounted or unmounted click here to see an enlarged photo. In the longer term 20202025, with constantly improving solar cell efficiencies and incorporation of new nanotechnology materials into the lens and. The experimental results with the sla and fiberoptic array demonstrate the feasibility of linear fiberoptic array sensing of the weld joint. Consult selfoc lens array reference book for complete design and application data.
In order to get a clear lateral borehole image, its needed to disposit the lens facing to. Luminous intensity of a gradientindex lens array osa. Micro lens arrays are used to homogenize light paths from projectors and to guide the beams into laser projector systems. Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627 text.
Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627. Once youve finished setting up your different slas, make sure to. To collimate and focus the visible semiconductor laser lights figure 2 onto the active areas, i. The small sizes of the lenses means that a simple design can give good optical quality but sometimes unwanted effects arise due to optical diffraction at the small features. Drawing the lens in the graphics window, with zooming. They range from beam transformation for fiber coupling over the. In order to get a clear lateral borehole image, its needed to disposit the lens facing to the lateral sidewall45. Agilent 86146b option dpc optical spectrum analyzer. Selfoc microlenses are flatended gradientindex lenses. Powerphotonics fiber coupling microlens array products offer a wide range of configurations, focal lengths, and forms. 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.
Standardisation for microlenses and microlens arrays. For example, lens array 110 may comprise a selfoc lens array sla, which is manufactured and sold by nippon sheet glass co. The lens has good condensing, collimating, and imaging features that can greatly improve the performance of optical systems. The small sizes of the lenses means that a simple design can give good optical. First in glass annual report 2008 fiscal year ended march 31, 2008 nippon sheet glass co. Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of microlens array mla. This technique uses a structured laser illumination source. Multiple row lens array alignable with multiple row image bar. With the development of microoptical systems, the selfoc lens has been widely used in many areas. Systems and methods for providing multiple object planes. Optical element for a document illuminator xerox corporation. Takaaki miyashita, project leader for iso 14880 microlens standards, ricoh company ltd, japan.
It is for students of contact lens fitting in colleges and universities, and for firms and individuals who support and promote continuing education. A novel video logging method based on the selffocus lens array. A microlens is a small lens, generally with a diameter less than a millimetre mm and often as small as 10 micrometres m. We demonstrate that a quasicrystal array of nanoholes in a metal screen can mimic a function of the lens. Stretched lens array sla for collection and conversion. Lenses of that kind are commercially available under the trade name selfoc, a derivative from selffocusing.
Principle and optical architecture of a highperformance optoelectronic switching network. In the longer term 20202025, with constantly improving solar cell efficiencies and incorporation of new nanotechnology materials into the lens and radiator elements, slas technology roadmap leads to wkg solar arrays, as shown in fig. Oct 22, 1996 for example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Introduction to gradient index optics the way a gradient index grin lens works may be explained best by considering a conventional lens. Double light guide type with uv array light source on one side, and r g b ir light sources on the other side. However, the current production and applications mostly use.
The stretched lens array sla a lowrisk, costeffective concentrator array offering winglevel performance of 180 wkg and 300 wm2 at 300 vdc. Osa imitating microlens array for integral imaging. This laserreceiving array has evolved from the solarreceiving stretched lens array sla. The images from adjacent lenses overlap and form a continuous erect image. One of europes largest telecom firms, orange, is generally considered a marketing success story with the launch of its now famous slogan. For the past 2% years, our team has been developing a unique photovoltaic concentrator array for collection and conversion of infrared laser light. Lens array 110 may comprise an array of rodshaped lenses which have a relatively short depth of focus. Double light guide type with unique uv bar light source on one side, and r g b ir light sources on the other side.
Gradient index raytrace for radial, axial and mixed gradients. Selfoc selfoc and selguide technologies lens array sla. These lenslet arrays are manufactured using photolithographic techniques based on semiconductor processing technology, yielding exceptionally accurate microlens profiles and lens. Shortening the rod to a length of 14 pitch, as shown in fig. To modify an existing sla, click on the sla in the list. Optical spectrum analyzer accurate dispersionpenalty calculations in less than a minute fast measurement speed dispersion penalty versus fiber length dispersion penalty versus fiber type. Microlens arrays with superior form accuracy are used for applications, where reliability and highest efficiency are crucial criteria. Selfoc selfoc and selguide technologies lens array.
Photonic quantum ring laser of whispering cave mode. Fused silica offers excellent transmission characteristics from the uv to the ir. 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. We are exhibiting a line of fiberoptic fluorescence detectors.
Selfaligned integration of 8 micromachined microfresnel. Integral imaging is a true, threedimensional 3d display technology that captures and reconstructs 3d scenes using twodimensional 2d microlens arrays. Posts about selfreference criterion written by soymeg. The oslo user guide contains proprietary information. They were developed by nippon sheet glass references. 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.
The linear density of microlens is thus 66 lenses cm or 33 lenses cm. The arrays are composed of one or more rows of lenses. Semifinished quick reference guide the olas best lens design award winning progressive lens providing up to 40%. A microlens array used in conjunction with a ccd array can constitute the core of a shackhartmann wavefront sensor. Our group study with selffocus lens array sfla as objective lens, which placed in the lateral multiple. In the present study, a novel ultraprecision diamond cutting method, as the endflycuttingservo efcs system, is adopted and investigated for large. However, it is still a challenge to process mla in large scale due to certain. Light passing through a gradientindex lens is focused as in a convex lens.
Sep 08, 2009 this angle is typically 48 degrees or higher if an sla09 lens is used. A sla selfoc lens array is composed of many selfoc lens in a strict manner. Selfoc mircolens calculations magnification selfoc microlens arrays. The refractive index distribution of even polygonal selfoc. Thus it is an important component in optical communication and integrated optics. Double light guide type with unique uv bar light source on one side, and r g b. Selfoc tm radial gradient glc gradient lens corporation gradium tm axial gradient grintech, jena linear axial. The refractive index variation in the material is created by ion exchange. Multiple row lens array alignable with multiple row image. The slas short total conjugate tc, ranging from 9 to 80 mm, allows the designer to. If the length of such a lens is identified as t, then the focal length is expressed by 1.
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 size of the system. Search for abbreviation meaning, word to abbreviate, or lists of abbreviations. Stretched lens array sla for collection and conversion of. The selfoc lens arrays sla are widely used in imaging and image processing equipment. The stretched lens array sla is an evolved version of scarlet, retaining the essential powergenerating elements the silicone fresnel lens, the multijunction solar cells, and the composite. Selfoc the world first selffocusing lens nsg group 100th. Download citation application of optical film with microlens array on a solar. An incoming light ray is first refracted when it enters the shaped. In a thin glass rod or filament, selfoc distributes light so that the refractive index decreases in a parabolic. However, planar implementations are preferable in view of their simplicity and practical bene. We note that the pqr laser with the micro collimator. 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.
Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of micro lens array mla. In case a spherical lens in place of a selfoc lens is used, the prism angle will be chosen such that the light coming out of the light guide is outside the acceptance angle. Pdf the stretched lens array sla spacecraft solar power. Application of optical film with microlens array on a solar concentrator. The highclass lens quality and the exceptional lenstolens uniformity ensure optimum coupling efficiencies for all optical channels in parallel. Efficient and versatile the doublesided polymer micro lens arrays can be used in costeffective mass production thanks to a unique tool technology. Using these values for r and va in equation 3, the length l of the lenses can be calculated to be 17.
We offer microlens arrays having a pitches of 150m and 300m in a square pattern. This laserreceiving array has evolved from the solar. Selected by the american library associations choice magazine as best technical book, the first edition of this book soon established itself as the standard reference work on all aspects of photographic lenses and associated optical systems. A novel video logging method based on the selffocus lens array for the lateral can only get fuzzy and unclear images. It can be used for a wide range of applications such as fiber. A rodlens array may comprise at least one row of gradedindex micro lenses, which may be equal. Us7225984b2 systems and methods for providing multiple. They are used as collimators or lenses for filter components. 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 illuminance of a gradientindex lens array is analyzed theoretically, and some examples of the design of a line scanning optical system are. Recent listings manufacturer directory get instant insight into. 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. Ittc to w avelength 685, 700,720,780 100 dpi 1ut k o t. Optics c lens a c lens has the same function as a grin lens.
Moreover, typical led printers use selfoclens arrays slas to concentrate and guide individual light, but the expensive sla technology is complicated. Such a lens has a gradient profile in which the refractive index varies in the direction perpendicular to the optical axis. If you use 3dmanage or 3dlightyear sla file preparation software, regardless of which sla printer is used and when it was purchased, you will most likely experience workflow disruptions after december 31, 2019. Investigation of an array technique for robotic seam. Using sla polymer and dod wax 3d printers, we realized three different types of lenses that are complicated to manufacture in traditional ways.
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