Systems and methods for providing multiple object planes. Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627 text. The oslo user guide contains proprietary information. Introduction to gradient index optics the way a gradient index grin lens works may be explained best by considering a conventional lens. 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.
Consult selfoc lens array reference book for complete design and application data. These lenslet arrays are manufactured using photolithographic techniques based on semiconductor processing technology, yielding exceptionally accurate microlens profiles and lens. The images from adjacent lenses overlap and form a continuous erect image. Posts about selfreference criterion written by soymeg. Imaging properties and measurement of selfoc lens and sla ieee. Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of microlens array mla. We are exhibiting a line of fiberoptic fluorescence detectors. Shortening the rod to a length of 14 pitch, as shown in fig. Drawing the lens in the graphics window, with zooming.
Agilent 86146b option dpc optical spectrum analyzer. Lens array 110 may comprise an array of rodshaped lenses which have a relatively short depth of focus. Standardisation for microlenses and microlens arrays. Microlens arrays with superior form accuracy are used for applications, where reliability and highest efficiency are crucial criteria. This laserreceiving array has evolved from the solarreceiving stretched lens array sla. 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. It is for students of contact lens fitting in colleges and universities, and for firms and individuals who support and promote continuing education. Selfoc mircolens calculations magnification selfoc microlens arrays. The high precision of the lateral array dimensions better than 0. The experimental results with the sla and fiberoptic array demonstrate the feasibility of linear fiberoptic array sensing of the weld joint. The refractive index distribution of even polygonal selfoc.
The arrays are composed of one or more rows of lenses. Stretched lens array sla for collection and conversion of. 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. Using these values for r and va in equation 3, the length l of the lenses can be calculated to be 17. We demonstrate that a quasicrystal array of nanoholes in a metal screen can mimic a function of the lens. A rodlens array may comprise at least one row of gradedindex micro lenses, which may be equal. For example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. In order to get a clear lateral borehole image, its needed to disposit the lens facing to. These fused silica microlens arrays are available mounted or unmounted click here to see an enlarged photo. 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. In order to get a clear lateral borehole image, its needed to disposit the lens facing to the lateral sidewall45. A microlens array used in conjunction with a ccd array can constitute the core of a shackhartmann wavefront sensor.
Integral imaging is a true, threedimensional 3d display technology that captures and reconstructs 3d scenes using twodimensional 2d microlens arrays. However, it is still a challenge to process mla in large scale due to certain. Using sla polymer and dod wax 3d printers, we realized three different types of lenses that are complicated to manufacture in traditional ways. Download citation application of optical film with microlens array on a solar. The small sizes of the lenses means that a simple design can give good optical. Selfoc the world first selffocusing lens nsg group 100th. Osa largescale fabrication of microlens array by novel. Lph16 sla20 lph1229702 selfoc sla12 dpi 600 lph21627. First in glass annual report 2008 fiscal year ended march 31, 2008 nippon sheet glass co. 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. Optical element for a document illuminator xerox corporation. 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. However, it is still a challenge to process mla in large scale due to certain inherent limitations of this technique.
A sla selfoc lens array is composed of many selfoc lens in a strict manner. Us7225984b2 systems and methods for providing multiple. For example, lens array 110 may comprise a selfoc lens array sla, which is manufactured and sold by nippon sheet glass co. Using powerphotonics unique laser directwrite process, we can create a wide.
Multiple row lens array alignable with multiple row image bar. Selfoc tm radial gradient glc gradient lens corporation gradium tm axial gradient grintech, jena linear axial. A novel video logging method based on the selffocus lens array. Instead of a ball lens, a gradient index lens is frequently used as a fiber coupling element. This barcode number lets you verify that youre getting exactly the right version or edition of a book. 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 highclass lens quality and the exceptional lenstolens uniformity ensure optimum coupling efficiencies for all optical channels in parallel.
However, planar implementations are preferable in view of their simplicity and practical bene. Fastslow tool servo ftssts diamond turning is a very promising technique for the generation of micro lens array mla. If item is not in stock, delivery is usually 12 weeks. We offer microlens arrays having a pitches of 150m and 300m in a square pattern. Stretched lens array sla for collection and conversion. In the present study, a novel ultraprecision diamond cutting method, as the endflycuttingservo efcs system, is adopted and investigated for large. It can be used for a wide range of applications such as fiber. These include collimators for a wide variety of applications and lens arrays for medical scanning.
Powerphotonics fiber coupling microlens array products offer a wide range of configurations, focal lengths, and forms. A microlens is a small lens, generally with a diameter less than a millimetre mm and often as small as 10 micrometres m. Once youve finished setting up your different slas, make sure to. Oct 22, 1996 for example, one commercially available lens array, nsg sla 12a selfoc lens array, contains lenses having radius r of 0. Highresolution shackhartmann sensor uses grin lens array. 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. Luminous intensity of a gradientindex lens array osa. 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. Double light guide type with uv array 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. A novel video logging method based on the selffocus lens.
Takaaki miyashita, project leader for iso 14880 microlens standards, ricoh company ltd, japan. The lens has good condensing, collimating, and imaging features that can greatly improve the performance of optical systems. They are used as collimators or lenses for filter components. Micro lens arrays are used to homogenize light paths from projectors and to guide the beams into laser projector systems.
Search for abbreviation meaning, word to abbreviate, or lists of abbreviations. It is for students of contact lens fitting in colleges and. 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. 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. With the development of microoptical systems, the selfoc lens has been widely used in many areas. The selfoc lens arrays sla are widely used in imaging and image processing equipment. Such a lens has a gradient profile in which the refractive index varies in the direction perpendicular to the optical axis.
Application of optical film with microlens array on a solar concentrator. Selfoc microlenses are flatended gradientindex 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. To modify an existing sla, click on the sla in the list. Light passing through a gradientindex lens is focused as in a convex lens. Double light guide type with unique uv bar light source on one side, and r g b. Recent listings manufacturer directory get instant insight into. A novel video logging method based on the selffocus lens array for the lateral can only get fuzzy and unclear images. Semifinished quick reference guide the olas best lens design award winning progressive lens providing up to 40%. Efficient and versatile the doublesided polymer micro lens arrays can be used in costeffective mass production thanks to a unique tool technology. We note that the pqr laser with the micro collimator. Moreover, typical led printers use selfoclens arrays slas to concentrate and guide individual light, but the expensive sla technology is complicated. Investigation of an array technique for robotic seam. Pdf the stretched lens array sla spacecraft solar power.
Our group study with selffocus lens array sfla as objective lens, which placed in the lateral multiple. For the past 2% years, our team has been developing a unique photovoltaic concentrator array for collection and conversion of infrared laser light. Optical spectrum analyzer accurate dispersionpenalty calculations in less than a minute fast measurement speed dispersion penalty versus fiber length dispersion penalty versus fiber type. An incoming light ray is first refracted when it enters the shaped. Selfoc selfoc and selguide technologies lens array. However, the current production and applications mostly use.
They were developed by nippon sheet glass references. They range from beam transformation for fiber coupling over the. In a thin glass rod or filament, selfoc distributes light so that the refractive index decreases in a parabolic. This laserreceiving array has evolved from the solar. Double light guide type with unique uv bar light source on one side, and r g b ir light sources on the other side. In the longer term 20202025, with constantly improving solar cell efficiencies and incorporation of new nanotechnology materials into the lens and. Sep 08, 2009 this angle is typically 48 degrees or higher if an sla09 lens is used. Thus it is an important component in optical communication and integrated optics. The slas short total conjugate tc, ranging from 9 to 80 mm, allows the designer to. Photonic quantum ring laser of whispering cave mode. If the length of such a lens is identified as t, then the focal length is expressed by 1. 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. The illuminance of a gradientindex lens array is analyzed theoretically, and some examples of the design of a line scanning optical system are. Fused silica offers excellent transmission characteristics from the uv to the ir.
645 1167 696 144 861 217 122 481 17 1306 1004 1366 1536 524 148 83 611 1082 1298 284 151 1545 1514 355 1272 853 294 978 1283 99 1181 1415 1354 6 536 747 890 853 768 82 685 1333 862 517 1306 1205