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DESIGN AND PERFORMANCE OF A TRIPLE SOURCE AIR MASS ZERO SOLAR SIMULATOR by Phillip Jenkins and David Scheiman (Ohio Aerospace Institue), and David Snyder (NASA Glenn Research Center). (NASA) Design and Performance of a Triple Source Air Mass Zero Solar Simulator DESIGN AND PERFORMANCE OF A TRIPLE SOURCE AIR MASS ZERO SOLAR SIMULATOR by Phillip Jenkins and David Scheiman (Ohio Aerospace Institue), and David Snyder (NASA Glenn Research Center). BACK From Abstract: "Simulating the sun in a laboratory for the purpose of measuring solar cells has long been a challenge for engineers and scientists. Multi-junction cells demand higher fidelity of a solar simulator than do single junction cells, due to a need for close spectral matching as well as AM0 intensity. A GaInP/GaAs/Ge solar cell for example, requires spectral matching in three distinct spectral bands (figure 1). A commercial single source high-pressure xenon arc solar simulator such as the Spectrolab X-25 at NASA Glenn Research Center, can match the top two junctions of a GaInP/GaAs/Ge cell to within 1.3% mismatch, with the GaAs cell receiving slightly more current than required. The Ge bottom cell however, is mismatched +8.8%. Multi source simulators are designed to match the current for all junctions but typically have small illuminated areas, less uniformity and less beam collimation compared to an X-25 simulator. It was our intent when designing a multi source simulator to preserve as many aspects of the X-25 while adding multi-source capability." Connect with us! How can we serve you? CONTACT US

DOTI manufactures custom mirrors and optics from a wide variety of glass and composite materials in sizes up to 134+". YOU DESIGN. WE BUILD. CONTACT US PRODUCTS DOTI manufactures custom mirrors and optics from a wide variety of glass and composite materials in sizes up to 134+". We are currently in the process of expanding to part sizes of up to 144", with in-house coatings available for parts of up to 108", and can work with customers on coatings for larger parts. DOTI's innovative techniques utilize specialized materials such as Optical Composites, Soda Lime Float Glass, Quartz, Fused Silica, ULE®, Starphire®, Borofloat®, and BK-7®. DOTI supplies optical coatings customized for specific tasks and wavelengths, using superior Enhanced Aluminum, Protected Aluminum, Gold, Silver, UV Coatings utilizing Hafnium, and others. Coatings can be engineered to perform over a broad spectral range. Products Collimators Our STAAG and WAC collimated display systems feature industry leading Fields of View, offering a wide range of capabilities for the simulation and gaming industries. More Info Tessellated Arrays DOTI has supplied mirrors for tessellated arrays to multiple, significant programs. Our quality, rate of production, accuracy and willingness to address customers' design needs had established DOTI as the supplier of choice for such projects. More Info Spherical Mirrors DOTI has the capabilities to manufacture a wide range of the highest quality mirrors required by today's demanding simulation industry. These mirrors include large spherical, flat, and beam splitters. More Info PERMA Mirrors DOTI has pioneered an ultra lightweight mirror product that we have named PERMA. PERMA stands for Performance Enhanced Replacement of Mylar Applications. Our mirrors employ very thin first surface mirrors, permanently bonded in a proprietary manner to very thin lightweight rigid panels. More Info Lightweight DOTI has manufactured many optics utilizing our ability to bend ("slump") glass, as well as from cast substrates, which allow aggressive light-weighting while providing good structural rigidity of the finished optics through use of integral support ribs. The largest cast lightweight mirror we have ground to date is a 42" diameter. More Info LS3 Lone Star Shatter Shield (aka LS3) is a proprietary lamination process which allows us to laminate glass, acrylic, etc. This laminating process is a custom application that we have been successful in applying to various requirements, including laminating collimating mirrors to create mirrors that are nearly impossible to rupture. More Info

Check here for news, updates, anouncements, and events from DOTI. WE DO WHAT WE LOVE, AND LOVE WHAT WE DO. CALL US < Back IMAGE Conference Jun 1, 2013 DOTI is attending IMAGE Conference 2013 - Co-Authored and presented "High Performance Mirrors for High Definition Systems" At this year's IMAGE Conference, DOTI co-authored and presented the paper "High Performance Mirrors for High Definition Systems" (in cooperation with Boeing Training Systems Visual IPT). IMAGE is a gathering of Display and Simulation Industry Professionals, and DOTI was honored to be asked to present information on cutting edge display mirror developments. The conference is held annually in Scottsdale, Arizona at Chaparral Suites Resort. Previous Next How can we serve you? CONTACT US

Check here for news, updates, anouncements, and events from DOTI. WE DO WHAT WE LOVE, AND LOVE WHAT WE DO. CALL US < Back Expanded Capabilities Jul 21, 2017 DOTI has expanded manufacturing capabilities by 150%! Displays and Optical Technologies, Inc. has expanded our manufacturing capabilities to meet customer demands for larger field of view display components. DOTI is proud to have served the simulation industry over the past 20 years by providing high precision optical components geared toward the most advanced projection display systems. Because of recent customer requests, DOTI has answered by expanding our manufacturing capabilities by 150%. This expansion was exclusively designed to house upgraded custom machinery capable of producing optical quality spherical glass mirrors for dual eye point displays in excess of 60° vertical field of view. Our custom machines now produce optics with a diagonal up to a 144” and increase our capabilities in formed optics, planar optics, and grinding and polishing. Our increase in facility space will focus on supplying customers with the highest quality solutions for 9’, 10’, and 11’ fixed and rotary wing applications. Previous Next How can we serve you? CONTACT US

Check here for news, updates, anouncements, and events from DOTI. WE DO WHAT WE LOVE, AND LOVE WHAT WE DO. CALL US < Back Achieving Our Goals Apr 20, 2018 Update from DOTI Over the past year, DOTI has been focused on proving to the simulation industry, our commitment to manufacturing large format (9’, 10’ and 11’ radius) optical grade spherical glass mirrors for both military and commercial flight simulators. We have been successful in achieving our goals to this point and are proud to say we are now taking our growth to the next level. DOTI is in the process of adding new manufacturing equipment to our newest building. We have designed and are building an additional large grinding and polishing machine to be better prepared for future sales of these larger format mirrors, and have more announcements to come. DOTI has just recently completed source inspection on a massive 5 mirror set for a major simulation integrator. In addition, DOTI will be rolling out a second set of these large format mirrors over the next few weeks to meet a demanding schedule for the final install. Both systems are for the same company and will be providing the commercial simulation market with DOTI glass mirrors. DOTI has begun manufacturing on four sets of glass mirror upgrades that follow these commercial projects. These sets will be delivered into the Military market for another major integrating customer (customers to remain undisclosed at this time). These sets will be deliverable in 2018 and 2019. The four mirror sets will be divided into two different designs of two systems each. Customer interest in massive collimating mirrors and flat mirror production (new and existing business) have surpassed our expectations during the past year and we appreciate the support of our established customers and the opportunity to prove ourselves to new customers, as well. Increases in business and even demanding delivery schedules will be met as DOTI continues to expand and advance to meet our market’s needs for the future. Previous Next How can we serve you? CONTACT US

Check here for news, updates, anouncements, and events from DOTI. WE DO WHAT WE LOVE, AND LOVE WHAT WE DO. CALL US < Back New Contract Feb 14, 2018 DOTI wins contract for 8 large, precise, ground and polished systems. DOTI has been awarded a contract to supply mirrors into new flight simulation displays to a US manufacturer for large, precise, ground and polished mirror systems. The award is for deliveries in 2018 and is for a total of 8 display systems and over 110 mirrors. DOTI’s manufacturing capability and experience allow for rapid fielding of the displays. DOTI always respects and protects customer identity and privacy unless specifically requested to participate in contract publicity. This contract is one of several that DOTI has earned in the past quarter and marks a significant increase in business in our new manufacturing / size capability. DOTI will be adding additional manufacturing area, equipment, and staff for 2018-2019 and beyond. Previous Next How can we serve you? CONTACT US

Providing our customers with the highest quality components available, DOTI manufactures optics to meet the most advanced specifications and performance in the industry. Mirrors and Lasers in Astroparticle Physics Infrastructures 2nd ASPERA Technology Forum 20-21 October 2011 - EGO/Virgo Site (Cascina), Pisa BACK From Forward : "To some extent, Astroparticle Physics (ApP) can be considered as the science of rare events, arising in some cases from the most violent phenomena in the Universe, happening fortunately far away! Nonetheless, detecting such weak signals and understanding their nature / origin are of paramount importance in our understanding of the fundamental laws governing the Universe. Identifying rare and weak signals requires imagining appropriate experiments and then going from conceptual design to the realisation of sophisticated and large size facilities with technical performances often beyond the exciting technological abilities. Accordingly, to constitute the indispensable large spectrum of expertise, close collaboration / cooperation between academia and industry is a must. ASPERA, a European ERA-Net project started within FP6 (2006 – 2009) and being continued in FP7 (2009 – 2012), has been developing an ambitious approach for i) facilitating the creation of large enough collaborations in ApP in Europe, ii) strengthening / creating bridges between public research institutions and companies, especially via the organisation of Technological Forums. The present event is focused on lasers and mirrors. Actually, new generation of facilities for the detection of Gravitational Waves (GW) and (very) high energy gamma rays (HEGR) are in R&D phases. The first topic deals with one of the most fascinating predictions of the General Relativity, going back to 1916 and still undiscovered! Detectable signals are expected resulting from merging / collision between black holes, binary neutron stars… The third generation interferometic detectors is planned to be constructed underground and use cryogenics technology, with unprecedented requirements on the characteristics and performances of lasers and mirrors. The realm covered by the second topic spans phenomena due to supernovae, pulsars, merging galaxies… Hunting rare events requires a very high selectivity and hence minimised background. The Cherenkov Telescope Array project anticipates various sized telescopes in order to pin down the sources of the HEGR and uncover the mysteries of underlying mechanisms. Here also, the required characteristics and performances go far beyond the state-of-the-art in the ground-based telescopes. In summary, the ApP community needs to impulse highly challenging R&D in optics, lasers and mirrors. Innovations in all those areas will certainly also allow companies to apply the gained expertise in other fields at the heart of social needs and concerns: energy, environment, health…" Connect with us! How can we serve you? CONTACT US

Lone Star Shatter Shield is a DOTI first-surface mirror product laminated for added structural strength and safety. LS3 - LONE STAR SHATTER SHIELD CONTACT A SALES ASSOCIATE Fine optics manufactured with robust durability and safety in mind. Lone Star Shatter Shield is a DOTI first-surface mirror product laminated for added structural strength and safety. DOTI has developed the ability to laminate to glass, acrylic, metals, etc. This laminating process is a custom DOTI-developed application that we have already been successful in applying to various requirements including techniques for laminating collimating mirrors to create mirrors that are nearly impossible to rupture. DOTI's original laminating process was developed to meet a customer's need to laminate together dissimilar materials in a highly customized manner. The laminated optical components needed to meet specific transmission characteristics, internal quality requirements, and certain rigidity standards. DOTI successfully developed the product line not only to meet this customer's requirement; we then applied its many successes to several other application areas. A significant benefit of this process is that the laminated materials become highly break and shatter resistant. Even if a customer were to damage this mirror, it will probably be able to be used without compromising its utility, while ordering a replacement mirror. This process has been tested to ANSI Z97.1 (L) Level B. We have verified this process. Verification of process runs or required changes can be accomplished. Product Applications LS3 was developed for use in systems and displays that may be in direct public contact, displays with extreme vibration and sudden stops, or any application where safety is paramount. Simulation Military POS LS3 OPTIONS 1 Hand Selected Glass DOTI provides permanent lamination of the highest quality glass available (without grinding and polishing) as our "standard" LS product. 2 Highest Optical Quality DOTI is able to control it's grinding and polishing processes to an incredible degree and is able to provide customers with extremely flat laminated mirror substrates that are immensely rupture resistant. 3 Laminated Beam Splitters DOTI has laminated beam splitter coated substrates for use where the beam splitters would be used in a public setting. The customers wanted to mitigate risk. DOTI has laminated beam splitting coatings inside a "sandwich" which gives the customer the added safety benefit, as well as having the additional advantage of ensuring that the optical coatings would not be rubbed off with the repeated cleanings needed when optics are subject to public exposure. How can we serve you? CONTACT US

Check here for news, updates, anouncements, and events from DOTI. WE DO WHAT WE LOVE, AND LOVE WHAT WE DO. CALL US < Back High Honor Dec 1, 2011 DOTI works with Rockwell Collins on its latest high brightness, resolution and contrast collimating display system. DOTI is proud to have been chosen to be Rockwell Collins' partner in optical manufacturing for its latest high brightness, resolution and contrast collimating display system. This system also supports wide eye point separation while maintaining the highest standards for display performance. DOTI is a supplier to the simulation market of the highest quality optical mirrors. DOTI strives to partner with the best systems providers in the industry and is proud to have been selected to assist Rockwell Collins as they expand their offerings in quality simulation products. We believe Rockwell Collins can look forward to strong market demand for this display system, and DOTI is prepared to support their manufacturing needs for optics. Previous Next How can we serve you? CONTACT US

Each of the VERITAS telescopes has 345 adjustable glass facets which were manufactured by D.O.T.I., Roundrock, Texas with slumping and grinding to get the optical figure. The facets were aluminized and anodized at the Whipple Observatory. Mirror Facets for the VERITAS Telescopes by E. ROACHE, R. IRVIN, J. S. PERKINS, K. HARRIS, A. FALCONE, J. FINLEY AND T. WEEKES Smithsonian Astrophysical Observatory, 670 Mount Hopkins Road, Amado, AZ BACK From Harvard Abstract : Each of the VERITAS telescopes has 345 adjustable glass facets which were manufactured by D.O.T.I., Roundrock, Texas with slumping and grinding to get the optical figure. The facets were aluminized and anodized at the Whipple Observatory. The parameters (reflectivity, focal length and blur circle) were measured. The design specifications for focal length (12.00 m +/- 1%) and spot size (< 10 mm) were surpassed by a factor of two. The anodizing process will be described and the effect of exposure at the VERITAS site on the reflectivity described. Project Gallery The below photos are of the VERITAS telescopes at the Fred Lawrence Whipple Observatory in Arizona. Photos taken by DOTI staff, VERITAS staff, and personnel working on the telescopes. Connect with us! How can we serve you? CONTACT US

An article published in Architectural Record about the Light Fall installation by Loisos + Ubbelohde, with mirrors manufactured by DOTI. ARCHITECTURAL RECORD (Feb 2023): In a New York Office Building, Loisos + Ubbelohde’s Fiber-Optic Sculpture Glows with the Light of the Sun The solar-powered 'Light Fall' illuminates the interior stairwell of a company’s East Coast headquarters by Joann Gonchar, FAIA Link to AR article: ARCHITECTURAL RECORD (Feb 2023): In a New York Office Building, Loisos + Ubbelohde’s Fiber-Optic Sculpture Glows with the Light of the Sun BACK Article Gallery Connect with us! How can we serve you? CONTACT US

DOTI produces the hightest quality optical components available, allowing pilots to train in the most realistic environment and giving them an immersive, "out-the-window" view, with depth and realism. SPHERICAL MIRRORS CONTACT A SALES ASSOCIATE Spherical Mirrors Advances in projection technology and rising simulator specifications require the most precise collimating display surfaces. Exceed current and future specifications with DOTI's Large Area Spherical Mirrors. DOTI produces the hightest quality optical components available, allowing pilots to train in the most realistic environment and giving them an immersive, "out-the-window" view, with depth and realism. Product Applications Used in a variety of industries from solar energy to aerospace research development, precision spherical mirrors are a great way to get spectacular and accurate results. With minimal deviation from sphere RoC (Radius of Curvature) and available sub-wave surface accuracy, our spherical mirrors continue to exceed customer expectation. An array of materials, sizes, thickness, coatings, etc. are available to meet every need. Simulation Military / Civil Aviation Automotive Maritime Gaming / Entertainment Construction CONCAVE SPHERICAL MIRRORS 1 Simulation / Remote Operation As the demand for more realistic simulation increases, so does the need for collimated displays. Collimation within the visual display is the one key aspect of a system that gives the user the most realistic simulation experience. Training with a true depth of field allows for increased performance in the field when compared to zero depth systems. 2 Solar Power Increase energy collection concentration efficiency, reduce system footprint, and improve overall system performance with DOTI precision spherical mirrors. CONVEX SPHERICAL MIRRORS 1 Convex Spherical Mirrors Widely used to expand light paths, convex mirrors can reduce the total number of mirrors needed within a visual system of display. Utilizing DOTI precision spherical mirrors for light path expansion will ensure the most accurate and uniform expansion of light. How can we serve you? CONTACT US