i am not sure if hier is the right place for my topic, but i take my chances. David, thanks. Thanks for your post here! I know there is Gradient surface types in sequential mode, can those somehow be made as a periodic array? This example also shows how to describe lenslet arrays in fully sequential mode using the us_arrayUser Defined Surface DLL. How to create an array of sources - Knowledgebase We also provide the source code for theUS_ARRAY and US_ARRAYEVENso you can modify it as needed in order to represent whichever surface type you need. I would think that placing the object and image plane 2f before and after the array would give a 1:1 imaging of the object (f being the single lens focal length). I mean some lens (no microlens) in the same plane on the circle radius. With optical sensor arrays tiny lens systems serve to focus and concentrate the light onto the photodiode surface instead of allowing it to fall on non-photosensitive areas of the pixel device. Zemax, which is a powerful optical design program, was preferred in order to make correct optimization for forming the characteristic structure of the microlens array. Sorry, our virus scanner detected that this file isn't safe to download. Microlens arrays contain multiple lenses formed in a one-dimensional or two-dimensional array on a supporting substrate. Exploring Physical Optics Propagation (POP) in OpticStudio Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website. Yes let us know how this goes and we'll be happy to help. Help me please to model the lens array in sequential mode. For instance, in the below image, I have two configurations for a cylindrical lens, Config 1 (in blue rays) being the nominal placement, and Config 2 (in green rays) being a displaced len along the Y-axis: Since the decenter is defined to only apply to the lens, the image surface is left unaffected. Good luck! I got the same results from both ways. Please try again in a few minutes. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations. Using this program, sequential or non-sequential optical systems can be designed and optical performance analysis of these systems can be made [ 18 ]. The results show that in order to obtain the best imaging quality, when the effect of optical crosstalk for CMOS is the minimum, the best distance between microlens array and CMOS is about 19.3 m. Our entire Zemax Catalog is also available. Don't know why. Figure1illustrates the schematic of the optical CMA homogenizer constructed in ZEMAX software. A microlens array (MLA) based see-through, front projection screen, which can be used in direct projection head-up displays (HUD), color teleprompters and bidirectional interactive smart. Sorry, we're still checking this file's contents to make sure it's safe to download. Sorry, we're still checking this file's contents to make sure it's safe to download. (or is it just me), Smithsonian Privacy If you can, feel free to share it on this thread here. PowerPhotonic standard lens arrays are designed for coupling or collimation of SMF-28 single mode fibers. They collect and focus light that would have otherwise fallen on to the non-sensitive areas of the CCD. What I do not understand is that the intensity of the diffraction spikesare much smaller than I see in reality. The lenses have a rectangular shape and the aspheric terms are only in one axis. So in this example, there is a pupil for the whole system so it won't trace a chief ray for a specific lenslet. We developed a single microlens model of Kodak KAI- 16,000 image detector based on Fig. Microlens Array Homogenizer for Laser Illuminated Projector In this study, a design for developing an anti-reflective microlens array is presented to increase the performance of multi-junction solar cells for satellite power systems. When using the off-axis field to make the Image Simulation, the picture appears to have multiple overlays (4). You currently do not have any folders to save your paper to! Im trying to model the diffraction from microlens arrays using non-sequential mode. Translations are not retained in our system. Find over 2,5 million titles in our affiliate shop, in various languages, genres and countless topics. Heres a good article that describes the details: How to use POP with lenslet arrays. You could modify your sequential system to include a nonsequential region that contains your lenslet array, using the Lenslet Array object. In order to reduce the optical crosstalk and improve the fill factor of CMOS image sensor, a microlens array has been designed and integrated with CMOS. Astrophysical Observatory. Array size strongly depends on the applications. A curvature with microlens array for the bionic compound eye can be fabricated. Please try again in a few minutes. Student. In sequential mode, I would suggest the sample .dll that is included in OpticStudio. In sequential mode, I would suggest the sample .dll that is included in OpticStudio. All lens parameters can be customer-specified: spherical, aspherical, astigmatic or acylindrical lenses can be arranged on a linear, square, hexagonal or arbitrary grid. Here is an illustration made by modifying your file: View original 1 Attachment TestFile.zip System Analysis Sorry, our virus scanner detected that this file isn't safe to download. There are more array types available in this forum post: Another simple option is to use multi configuration, with one configuration per lens. Armeneasca 28/1, office 1Chisinau MD-2012Republic of Moldova, Europe, Managing Directors: Virtoria Ursu, Ieva Konstantinova. How it is possible? The six lenses form six spots on the image plane. The ZEMAX software can be used to simulate the light path with a long focal length for the compound eye. Best answer by Thomas Magnac 21 May 2020, 15:29. Sorry, our virus scanner detected that this file isn't safe to download. Sorry, we're still checking this file's contents to make sure it's safe to download. 1 Fabrication Methods for Microlenses 2 Applications 3 Our Experience 4 Microlens Arrays 5 Our Experience A microlens is roughly defined as a lens with a diameter lower than 1 mm to around 10 micrometers. Please refer to the following Knowledgebase article for details on how to compile a DLL:How to compile a User-Defined DLL Knowledgebase (zemax.com). Microlens arrays are the key component in imaging systems because the systems exhibit some excellent optical properties such as large FOV angles and low aberration and distortion 6 . As Ray mentioned, there are sequential array lens types which comewith your installation of OpticStudio. The usefulness of this model is limited. Sorry, our virus scanner detected that this file isn't safe to download. Resolution in an imaging system with a microlens array - Zemax I know this method. The common applications are to 1) increase the collection efficiency of pixelated detectors by providing each pixel with a lenslet aligned so as to couple light into it; 2) perform source homogenization by overlapping sections of a source. Enter your username or e-mail address. Hi @Maximizator- The solution Ray shared is part of the Code Exchange. 1 reply Dear Community, I'm trying to model the diffraction from microlens arrays using non-sequential mode. Both beamlets . Although their small size will reduce the presence of some type of aberrations, it will create some unexpected effects. 1 reply 174 views Raphael.S Single Emitter 0 replies Hello community, i want to simulate a aspherical surface with aspheric coefficients (2,4,6,8,10,12,14,16,) as a microlens array. Microlens Arrays Solar Concentrator Design Using ZEMAX If you now place an aperture stop in front of the lenslet, then I'd imagine that you could aim the chief ray towards the stop by setting on the real ray aiming feature in the system explorer menu. The example from the KBAHow to use POP with lenslet arraysis using a lenslet array. is it possible to trace chief ray at a specific lenslet? This file demonstrates the propagation of a top hat beam through a rectangular array of spherical lenses. 3. Then you can select a DLL such as US_ARRAY,US_ARRAYEVEN. Ray, I have not access to the page from your last message. Microlens Arrays - PowerPhotonic They collect and focus light that would have otherwise fallen on to the non-sensitive areas of the CCD. Do you know which is the best solution for building such an lens array for aspheric surfaces? Second question (perhaps the reason behind my misunderstanding), is how can Microlens Arrays be used to form images. The manufacturers' data is as follows. Mostly, the lens shape is cylindrical or spherical. You have requested a machine translation of selected content from our databases. The entrance and exit ports are drawn. Please try again in a few minutes. tracing chief ray at micro lens array | Zemax Community Ultrawide-angle and high-efficiency metalens in hexagonal - Nature Sorry, we're still checking this file's contents to make sure it's safe to download. The unfortunatly i can not explain it with the optical design fundamental of MLAs. We'll send you an e-mail with instructions to reset your password. If I build a micro lens array at sequential mode. To access this item, please sign in to your personal account. Sorry, our virus scanner detected that this file isn't safe to download. They arefound in the folderZemax\DLL\Surfaces. A Microlens Array with Different Focal Lengths Fabricated by Roll-To (I used the user defined .dll for building the MLA). Each configuration would specify an x and y decenter for a single lenslet. Aspheric Microlens array | Zemax Community It can range from 12 for optical switch applications up to more than 103103 for diffusers or display applications. The microlens array beam homogenizer usually contains two lens arrays and a condenser lens, which will have much greater flat-top uniformity. lens array | Zemax Community Using the spot size (airy disc) or MTF doesnt seem to work with arrays. Best answer by Jeff.Wilde 8 December 2021, 19:43. ZEMAX 1. I can sort out your account details on the forum if needed. If you do have a supported license, send me a private message. Create a new folder below. Array size strongly depends on the applications. (I used the user defined .dll for building the MLA) OpticStudio. a) The Zemax layout of the simulation scheme. b)The - ResearchGate Both . Mostly, the lens shape is cylindrical or spherical. It is defined with a user-defined surface us_array.c. Lambert Academic Publishing is a brand of OmniScriptum S.R.L. Is there a way to find the resolution of a system that uses a microlens array (MLA) for imaging in sequential mode? Additionally, Im guessing some kind of post-processing of the image is necessary to actually make the image resolvable? I've made my array fine and I'm using a diffractive source. See the User Defined surface documentation for details. In thinking out loud, I am imagining that Zhenfeng Zhuang is referring to a situation where you're creating a lenslet array in sequential mode using multi-configurations and coordinate breaks. There are more array types available in this forum post: Single microlens is used to couple light to optical fibers while microlens arrays are often used to increase the light collection efficiency of charge-coupled device (CCD) array. Arrays of sources are more efficient than multiple instances of the same source, especially when the source is defined using a data file. Diffraction from microlens arrays in non-sequential mode - Zemax PowerPhotonic offers a wide range of standard and custom microlens arrays, with high uniformity of RoC, conic constant and pitch. i want to simulate a aspherical surface with aspheric coefficients (2,4,6,8,10,12,14,16,) as a microlens array. Hongyan Xu, Defeng Mo, Yingjie Ma, Zhenli Zhao, Xiangyang Liu, Tong Zhao, Xue Li, "Focused micro-lens array design and performance testing," Proc. The results look nice, with the diffraction spikes in the place where I would expect. Just to be clear here, so that I am sure that I understand your question correctly: are you asking about the proper Reference setting (either Chief Ray or Vertex) for your MLA decenter? The optical design program Zemaxa defines the numerical aperture of a single mode optical fiber as "the sin of the half angle to the 1/e2intensity" (= 13.5%). Poly. Fill-factor area occupied by the microlens arrays. The attached file implements such a system. Designing anti-reflective microlens arrays for space solar cells This functionality is provided solely for your convenience and is in no way intended to replace human translation. Angel Morales | Senior Application Engineer | Zemax. 2015-11-03 Im trying to model lens array imaging using mixed mode (array defined in NSC). We manufacture a wide range of arrays, from basic spherical to more complex diffractive and aspheric profiles. Ive made my array fine and Im using a diffractive source. In the meantime, the duty ratio of CMOS is low because of its pixel structure. Help me please to model the lens array in sequential mode. Setting up the initial design This article describes a commercial fiber coupler, which couples two pieces of Corning SMF-28e Fiber using SUSS MicroOptics FC-Q-250 microlens arrays. Are both settings not quite giving you what you expect? The depth-sensing system illustrated in Figure 2 was designed to acquire the depth information of objects. Fill-factor area occupied by . Zemax Files Click on the red Document icon next to the item numbers below to access the Zemax file download. Please try again in a few minutes. PDF ZEMAX Simulation of Fiber-To-Fiber Coupling - AMS Technologies As noted in this Knowledgebase article: The Source Diffractive object -- The Source Diffractive object in Non-Sequential Mode is defined by a collimated ray bundle passing through a User Defined Aperture (UDA). US_Array modelsan n x m array of lenses, but the number of lenses in each direction must be odd. PDF Strategies for Beam Homogenizing - AMS Technologies March 31, 2021 00:55 OpticStudio allows all sources to be replicated as arrays. ZEMAX. The optical crosstalk between the pixel units can influence the image quality of CMOS image sensor. This space is restricted to users who have an active, supported Zemax license. Sorry, we're still checking this file's contents to make sure it's safe to download. I would recommend checking the help files about vignetting factors if you are not familiar with them. For 2) homogenization, please see this knowledgebase article about how to model microlens arrays in non-sequential mode:Flys eye arrays for uniform illumination in digital projector optics Knowledgebase (zemax.com). However, I dont know of any supplied DLLs for producing such an array in pure sequential mode. However, I think I've done this before and found that OpticStudio sort of 'breaks down' for large angles. I noticed that when you set your Reference to Vertex, the beam itself looks well-centered on Surface 24. This content is available for download via your institution's subscription. thanks for your quick reply. C. Christos.Katopodis. This article gives examples of the use of this capability. Figure 1 illustrates the schematic of the optical CMA homogenizer constructed in ZEMAX software. Fabrication of Cylindrical Microlens Array on RB-SiC Moulds by - MDPI Maybe it works better if you have an imaging lens (say, a Cooke triplet or double Gauss) in front of the lenslet array, and the chief ray is aimed towards the real entrance pupil of the imaging lens. Microlens Array in Sequential Mode | Zemax Community There is an excellent article on thishere. INTROUCTION Microlens arrays have been applied in many electro-optical and micro-optical systems, such as flexible light-field smart-phones1, solar concentrators2, data storage3 and Integral Imaging 3D displays 4, etc. Agreement NNX16AC86A, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials, Is ADS down? Enter your username or e-mail address. Notice, Smithsonian Terms of This would more or less model a more realistic situation where you have a camera lens and a lenslet array at the image plane. Enter your username or e-mail address. Answer Hi Ceren, This will depend on the shape of the lenses and their size to ensure that ray tracing is applicable. Collimation and coupling of fibers can be made simple with the use of a PowerPhotonic fiber array. If this is a surface after your decentered cylindrical element, you should check to see if you have defined your coordinate-adjusting settings (whether it's through Coordinate Break surfaces or through the Surface Properties) to ensure that your surface after the decentered element is not moving as well (if that is what you're trying to model). Focused micro-lens array design and performance testing I want to get information about how I can design a microlens array in sequetial and non sequential mode. Best answer by David 1 September 2021, 18:55. The simulation of this source includes scalar diffractive effects due the clipping of the wavefront by the aperture.. Browse the world's largest eBookstore and start reading today on the web, tablet, phone, or ereader. Instead, you may want to use Physical Optics Propagation (POP) in a sequential model. Lenslet arrays are modeled using the user defined surface. How to use POP with lenslet arrays - Knowledgebase Here is an illustration made by modifying your file: You may find more information and sample files about the two common applications of microlens arrays that David mentioned here: For 1) to increase the collection of pixelated detectors, please see the Lenslet Arraysample file in the \Documents\Zemax\Samples\Physical Optics folder. Setting the Reference to Vertex then shows the displacement of the focused beam in a way that matches up with what we see in the 3D Viewer: If this doesn't answer your question, though, we may be able to provide more help if we can take a look at your file. I am trying to design a microlens array (10*10) in sequential mode but after designing the array the results show the 9*9 array. Both types use either cross-cylindrical or square microlens arrays to divide the incident beam into beamlets. The question is, what should be used as Reference (Chief Ray or Vertex) to analyse the beam decenter. Alaa Al-Jizany Open the file {Zemax}\Samples\Physical Optics\Lenslet Array.zmx. The definition of Corningbfor the numerical aperture is the sin of the half angle to 1% of the peak center intensity. This type of surface is entirely arbitrary and is defined via an external DLL. LAP Lambert Academic Publishing ( You will have access to both the presentation and article (if available).
