Display Standard - Veritas et Visus

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Veritas et Visus Display Standard February 2009 ORA releases software for complex optical systems CODE V, the premier optical design software from Optical Research Associates (ORA), now delivers faster optimization of complex optical systems by taking full advantage of parallel processing on multi-core architecture CPUs. In particular, both of its local and global optimization routines in the release of CODE V 10.0 are now enabled for multi-core operation. Optical designers can solve the most complex lens design problems in a fraction of the time needed using a single processor. CODE V 10.0 also offers improved accuracy and ease of use for diffraction analysis. Its new “Beam Synthesis Propagation” (BSP) feature uses a beamlet-based, diffraction propagation algorithm to include diffraction effects through the entire optical system design. BSP delivers greater accuracy than using exit-pupil diffraction computations, or beam propagation based on FFT or angular spectrum methods. Systems with astigmatic beams, polarized input optical fields, low f-numbers (e.g., microlithography lenses), or non-contiguous pupils are accurately analyzed with BSP. The feature is also useful for near-field diffraction analysis and for optical systems where the amplitude or phase is modified near the focus, such as with a grating, phase plate, or spatial filter. Determining appropriate inputs for any beam propagation algorithm can be challenging, but BSP solves this by including a unique pre-analysis feature, which automatically provides appropriate input recommendations for a specific lens system, including input field sampling, resampling and output grid characteristics. Using pre-analysis, BSP will also estimate an execution run time for a lens system. http://www.opticalres.com Tektronix picture quality analyzer assists SureWest Communications in evaluation of H.264 encoders Tektronix announced that SureWest Communications, which provides advanced digital TV, high-speed Internet and telephone services to the greater Sacramento and Kansas City regions, used the Tektronix PQA500 picture quality analysis tool in its Sacramento market to provide dependable evaluation and qualification of H.264 video encoders intended for future deployment in their digital television service. As more broadcasters move to high definition (HD) output, it is imperative that their new and existing equipment is capable of supporting the highest quality images. Broadcasters need to accurately and comprehensively assess the picture quality of encoding and decoding equipment so they can have confidence that it meets or exceeds their requirements. By using an algorithm that accurately models the human vision system, the Tektronix PQA500 provides a suite of repeatable, objective quality measurements that closely correspond with subjective human visual assessment. These measurements provide valuable information to engineers working to optimize video compression and recovery, and maintain a level of common carrier and distribution transmission service to clients and viewers. http://www.tektronix.com Ocean Thin Films releases ColorBug wireless color and luminance testing device Ocean Thin Films, a division of Ocean Optics, introduced the ColorBug handheld wireless device for lighting designers, technicians, videographers and digital photographers. ColorBug measures CIE color values and luminance in theatrical, studio and architectural applications. Its software allows technicians to wirelessly share data with their iPhone or iPod touch, making color analysis simple and convenient. The ColorBug can be mounted on walls and other fixtures to assist in taking measurements remotely or hands-free. Smaller than a typical mobile phone, ColorBug is completely portable and features a rechargeable lithium-ion battery, and mini USB connectivity. http://www.seachangeronline.com/colorbug.html 76
Veritas et Visus Display Standard February 2009 DisplayMate introduces new motion blur measurement system DisplayMate introduced Multimedia with Motion Bitmaps Edition that moves test patterns and test photos to measure, and evaluates motion blur in HDTVs and computer monitors. With it, one can visually measure the true response time in milliseconds for different gray-to-gray transitions on-screen with just the eyes alone. You simply interactively vary the speed of a calibrated test pattern until the blur matches a specific width on the test pattern and DisplayMate tells you immediately on-screen what the response time is. You’ll see that the blur and response time vary significantly for different gray-to-gray transitions and that the response times for most transitions are considerably longer than the published specifications. Besides test patterns there are also 40 photographs that are moved on-screen so you can visually evaluate how motion blur affects real images. In addition to motion blur, DisplayMate will also show all sorts of bizarre motion artifacts that affect all display technologies except CRTs. These arise from the display driver and signal processing electronics, and frequently from algorithms designed to reduce motion blur, which introduce their own artifacts. Since many displays have one or more user options for reducing motion blur you can visually compare them. DisplayMate Multimedia with Motion Bitmaps Edition runs on any 32-bit version of Windows XP or Vista. It runs automatically and instantly from the supplied USB drive - no installation necessary. It works with any type of analog or digital connection supported by a PC and HDTV or computer monitor (but HDMI and DVI are best). http://www.displaymate.com/hdtv_cal.html Green electronics round-up compiled by Keith Baker with additional material by Phillip Hill Keith J. Baker is project researcher at the Scottish Institute of Sustainable Technology (SISTech, www.sistech.co.uk) a not-for-profit sustainable development consultancy based at Heriot-Watt University, Edinburgh, Scotland. He is a 2003 graduate of the DisplayMasters program and has a PhD in Domestic Energy Consumption from the Institute of Energy and Sustainable Development, De Montfort University, Leicester, England, with a background in environmental science and science policy. He has a keen interest in the energy efficiency and environmental impact of new technology, particularly relating to displays. http://www.linkedin.com/in/keithjbaker Happy New Year to all our readers and get ready, 2009 looks set to be a big one. To kick things off we look forward to what the EU has in store this year – and there’s a lot of it coming our way. We finally have some good news from the One Laptop Per Child project, which this column has been following and supporting since it began; and we couldn’t let some minor news about a certain election go by without a comment. Congrats to our US readers! The EU Directives – What’s in store for 2009? For the displays and electronics industries 2008 was a relatively quiet year by EU policy-making standards. REACH continued to make slow but rumbling progress, the WEEE and RoHS reviews got underway, and EuP took its first tentative but promising steps with the release of the first batch of eco-design guidelines and the announcement of the stepped phasing out of conventional light bulbs. So now that you’ve had a chance to take a time out, get ready for the next round in 2009. Perhaps most importantly, the results of the RoHS review will soon be upon us. As covered here previously it is safe to assume that many of the current exemptions will go, although a few new ones may be added, new product categories will join those already covered, and the list of restricted substances will grow. Early indications are that the latter will cause the biggest problems, with Denmark leading the call for more and tougher restrictions along with Norway, which is a non-EU state but is allowed input to the process and is set to announce its own version around the same time. The revision will also bring the restriction and monitoring elements of RoHS and REACH in line with each other, meaning less paperwork for manufacturers than previously feared. One substance that will 77
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