Rear Projection Screens
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Draper's Product Guide for Visual Communication
Draper’s Product Guide for Visual Communication www.draperinc.com | 1-800-238-7999 About Draper ABOUT DRapER DRAPER, INC., originally known as the Luther O. Draper Shade Company, was founded in Spiceland, Indiana, in 1902. Under the ownership and management of Mr. Draper’s descendants, his simple and straightforward business philosophy continues today: make a quality product and offer it at a reasonable price. After more than a century in business, Draper has grown to be one of the world’s largest manufacturers of projection screens, projector lifts, window shades, and gymnasium equipment. In addition, Draper manufactures rear projection display systems, flatscreen lifts and presentation easels. The Draper factory today. In addition to its Spiceland, Indiana headquarters, Draper, Inc. has sales offices in Placentia, CA and in Blackwood, Gwent, United Kingdom. Draper also has three wholly owned subsidiaries: Draper Group Ltd., a sales and warehouse facility in Corby, Northamptonshire, United Kingdom, and two manufacturing companies in Sweden, producing Euroscreen projection screens and SMS Smart Media Solutions video projector and flat screen mounts. Warranty All products in this catalog are warranted for one year against defects in materials and The Draper factory c. 1920. workmanship. Some products carry a longer This catalog features Draper’s full line of products for warranty term: see product description. Defective visual communication, which includes: products will be repaired or replaced, at Draper’s option. Authorization required -
Angles of Reflection
Angles of Reflection Collected Edition Angles of Reflection Collected Edition Volume I – 2007 Too Close for Comfort? (March) ......................................................................................................4 Wider is Better, Right? (April) ...............................................................................................................7 Reflecting Brilliance (May) .......................................................................................................................11 Brightness VS. Contrast (June) ........................................................................................................14 Uniformity - Revisited (July) ................................................................................................................18 Ambient Light, Transmit or Reflect? (August) ..............................................................22 Sizing Up 16:10, Why and Where? (September) ........................................................ 26 Volume II – 2009 3D – The Final Frontier? (May) .......................................................................................................30 Gain Again (September) .........................................................................................................................36 The Right-Sized Screen (November) ......................................................................................40 The Twilight of the AV Myth: Light (December).......................................................44 Volume III – -
Light-Efficient Augmented Reality 3D Display Using Highly Transparent Retro-Reflective Screen
Light-efficient augmented reality 3D display using highly transparent retro-reflective screen SHOAIB R SOOMRO,1, * HAKAN UREY,1 1Koc University, Electrical Engineering Department, Optical Microsystems Laboratory, Sariyer, Istanbul, Turkey, *Corresponding author: [email protected] Received XX Month XXXX; revised XX Month, XXXX; accepted XX Month XXXX; posted XX Month XXXX (Doc. ID XXXXX); published XX Month XXXX We propose and demonstrate a light efficient 3D display using a highly transparent desktop-size augmented reality screen. The display consists of a specially designed transparent retro-reflective screen and a pair of low power pico- projectors positioned close to the viewer’s eyes to provide stereo views. The transfer screen is an optically clear sheet partially patterned with retro-reflective microspheres for high optical gain. The retro-reflective material buried in the screen reflect incident light back towards the projectors with narrow scattering angle and facilitates the viewer to perceive a very bright content. The tabletop prototype mainly consists of an in-house fabricated large AR screen (60x40cm2) and a pair of laser scanning 30 lumen pico-projectors. The display is tested for different viewing configurations, different display parameters such as retro-reflective coefficient, eye-box size, polarization maintainability, stereo crosstalk and brightness. The AR prototype display provides 75% optical transparency, exceptional brightness (up to 1000 cd/m2 when viewed through beam-splitters and 350 cd/m2 with bare eyes) and negligible crosstalk in 3D mode (<5% and <1% when viewed through beam-splitters and polarizers respectively) for the working distance of up to 2 meters. OCIS codes: (120.2040) Displays; (230.0230) Optical devices; (220.4830) Systems design. -
Build a Sun Funnel for Group Viewing of the Great American Solar Eclipse of August 21, 2017*
Build a Sun Funnel for Group Viewing of the Great American Solar Eclipse of August 21, 2017* Richard Tresch Fienberg American Astronomical Society Chuck Bueter Nightwise.org Louis A. Mayo NASA Goddard Space Flight Center *and other fascinating Version 3.2 • June 2016 solar phenomena, too! This simple & inexpensive device makes it easy for many people to observe the Sun simultaneously — and safely! Origin of the Sun Funnel: Amateur astronomers Gene Zajac and Chuck Bueter adapted an existing design for a 2003 Great Lakes Planetarium Association Conference workshop. The rear-screen projection material shown here is an idea borrowed from Bruce Hegerberg’s Sun Gun. Contents Safety First . 4 Safe Sun . 5 Supplies & Tools . 7 Match the Eyepiece to Your Telescope . 10 A Matter of Size & Degrees . 15 Step-by-Step Assembly Instructions . 16 Prepare Your Sun Funnel & Telescope for Use . 33 How to Aim a Telescope at the Sun . 35 Solar Filter vs. Solar Projection . 37 Sun Funnel Safety . 38 Add a Solar Shade to Your Sun Funnel . 39 Why Observe the Sun? . 40 The Galileoscope & the Sun Funnel . 46 Mathematical Underpinnings of the Sun Funnel Design . 48 Contact the Authors . 58 Safety First! Whenever you observe the Sun, with any technique, you must put safety first. Construction of the Sun Funnel requires the skilled use of a saw and other potentially dangerous tools and is therefore not a suitable activity for children except when supervised closely by adults. Once completed by following the instructions in this document, the Sun Funnel should be set up by a knowledgeable adult who is experienced in the use of a telescope for solar observing. -
Coded Projection and Illumination for Television Studios
EUROGRAPHICS 2007 / D. Cohen-Or and P. Slavík Volume 26 (2007), Number 3 (Guest Editors) Coded Projection and Illumination for Television Studios A. Grundhöfer, M. Seeger, F. Häntsch and O. Bimber Bauhaus-University Weimar, Germany Abstract We propose the application of temporally and spatially coded projection and illumination in modern television studios. In our vision, this supports ad-hoc re-illumination, automatic keying, unconstrained presentation of mod- eration information, camera-tracking, and scene acquisition. In this paper we show how a new adaptive imper- ceptible pattern projection that considers parameters of human visual perception, linked with real-time difference keying enables an in-shot optical tracking using a novel dynamic multi-resolution marker technique. Categories and Subject Descriptors (according to ACM CCS): H.5.1 [INFORMATION INTERFACES AND PRE- SENTATION]: Multimedia Information SystemsArtificial, augmented, and virtual realities; I.4.8 [IMAGE PRO- CESSING AND COMPUTER VISION]: Scene AnalysisTracking 1. Introduction and Motivation Although several solutions to the one or the other problem exist, we want to propose an entirely different concept: We Virtual sets have become a standard technology for many envision a technical extension to existing studio technology modern studio productions. Blue screens and chroma keying that enables new effects and control possibilities. Projectors enable the composition of computer generated backgrounds allow a spatial and temporal modulation of light and dis- with the recorded image of moderators or actors. Several played pictorial content that can be computer controlled and problems, such as realistic keying and matting, or spill com- synchronized with the capturing process of studio cameras. pensation have been solved for creating professional effects. -
Manufacture of Display Innovation
Manufacture of display innovation 15 YEARS EXPERIENCE ONE-STOP SHOPPING 24-7 SUPPORT We have been producing projection We offer more than our own Our technical and sale support are films, and manufacturing a wide range manufactured product-lines. We offer always standby to offer assistance. of products for over a decade. the help needed to make your project We also have a 48 hrs lead-time. a success. NEW DEVELOPMENTS INNOVATION PARTNERSHIPS Projection films up to 2m. width Glimm screens is the only manufacture Glimm screens is one of the top three Projection films for short throw who is capable of creating projection projection film manufacturers in the projectors of all brands. films capable of supporting ultra short world. With over 20 years experience New materials for all kinds of throw projectors. This technique in visual technology combined with Holographic projection specially large makes it is possible to create a our one stop shopping solution we size projection. Save money with re- projection under an angle of more offer a wide range of visual products usable projection films. than 60 degrees on our films. Glimm Screens B.V. | Vriezerweg 20b| 9482 TB Tynaarlo | The Netherlands | E-mail: [email protected] Tel: (+31)(0)50-5893112 | Fax: (+31)(0)50-5893113 | Internet: www.glimmdisplay.com GLIMM PRODUCT RANGE About Glimm Glimm screens started in 2000 with selling the first projection film from 3M. During this period we discovered that technology what was necessary to produce their own projection films. We found a film supplier who was developing films for different applications for 3M and other manufactures like Texas instruments, Samsung.