For the purposes of this copyright and license, "Contributing Authors" is defined as the following set of individuals:

Andreas Dilger

Dave Martindale

Guy Eric Schalnat

Paul Schmidt

Tim Wegner

The PNG Reference Library is supplied "AS IS". The Contributing Authors and Group 42, Inc. disclaim all warranties, expressed or implied, including, without limitation, the warranties of merchantability and of fitness for any purpose. The Contributing Authors and Group 42, Inc. assume no liability for direct, indirect, incidental, special, exemplary, or consequential damages, which may result from the use of the PNG Reference Library, even if advised of the possibility of such damage.

Permission is hereby granted to use, copy, modify, and distribute this source code, or portions hereof, for any purpose, without fee, subject to the following restrictions:

1.The origin of this source code must not be misrepresented.

2.Altered versions must be plainly marked as such and must not be misrepresented as being the original source.

3.This Copyright notice may not be removed or altered from any source or altered source distribution.

The Contributing Authors and Group 42, Inc. specifically permit, without fee, and encourage the use of this source code as a component to supporting the PNG file format in commercial products. If you use this source code in a product, acknowledgment is not required but would be appreciated.

A "png_get_copyright" function is available, for convenient use in "about" boxes and the like:

printf("%s",png_get_copyright(NULL));

Also, the PNG logo (in PNG format, of course) is supplied in the files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).

Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a certification mark of the Open Source Initiative.

Glenn Randers-Pehrson

glennrp at users.sourceforge.net

March 29, 2012

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Epson 1970W, 1985WU, 1975W, 1980MWU manual 204

1975W, 1980MWU, 1985WU, 1970W specifications

The Epson 1970W, 1985WU, 1980MWU, and 1975W projectors represent a robust lineup in the realm of portable projection technology, designed to meet a variety of professional and educational needs. These models are characterized by their versatile features, advanced technologies, and impressive specifications, making them ideal for business presentations, classrooms, and home entertainment.

The Epson 1970W is renowned for its exceptional brightness, boasting up to 4,500 lumens, which ensures clear and vivid images even in well-lit environments. It utilizes 3LCD technology, ensuring vibrant color fidelity and detailed visuals. The 1970W also supports WXGA resolution, providing 1280 x 800 pixel clarity, making it suitable for displaying text-rich presentations and intricate graphics with ease.

Following closely is the Epson 1985WU, which further elevates the projection experience with native WUXGA resolution at 1920 x 1200 pixels. This model is particularly effective for high-definition content, offering enhanced clarity for detailed images. The 1985WU also features an impressive brightness of 5,000 lumens, ensuring excellent performance across various lighting conditions. This projector incorporates wireless capabilities, allowing users to share presentations effortlessly from laptops or smart devices, enhancing its convenience in collaborative settings.

The Epson 1980MWU combines high brightness with mobility, perfectly suited for on-the-go professionals. With 4,400 lumens of brightness and WUXGA resolution, it delivers sharp images while maintaining portability. This model boasts an innovative design with easy setup features, including automatic keystone correction, allowing for quick adjustments during presentations. Its extensive connectivity options, including HDMI and USB ports, enhance usability, making it a versatile choice for diverse applications.

Lastly, the Epson 1975W caters to those who prioritize flexibility and ease of use. This model features 4,200 lumens of brightness and WXGA resolution, providing a commendable balance between clarity and vivacity. The 1975W is equipped with advanced features such as vertical/horizontal keystone correction and lens shift, which help simplify setup in various environments. Furthermore, it includes a robust suite of connectivity options, supporting seamless integration with various devices and ensuring that users can present with minimal fuss.

Together, the Epson 1970W, 1985WU, 1980MWU, and 1975W models showcase a powerful combination of brightness, resolution, and innovative technology. Whether for professional, educational, or personal use, these projectors deliver high-quality performance, catering to the diverse needs of today's users.